部署：update.sh 改由 deploy/update-bg.sh 在服务器上后台跑（setsid），SSH 断了它照样跑完。2026-11-03 开发机上 FlClash 切换配置重建了 TUN 网卡，SSH 正好断在 docker compose up 中间：旧容器删了、新容器只创建没启动，网站停了 40 分钟。输出写到 /var/tmp/iot_sim-update.log，--follow <提交号> 接着看输出、退出码和 update.sh 一样，这个提交的部署还没开始时返回 75；上一次还在跑就等它结束。Gitea 的"起服务"ssh 返回 255 就 10 秒后重连 --follow，75 就重新开始，最多 6 次。GitHub 备用部署也改用 update-bg.sh。部署说明同步

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,11 @@
+# 只把构建需要的源码送进 Docker
+**/node_modules
+**/bin
+**/obj
+**/dist
+.runs
+.git
+docs
+*.pdf
+textbook-libs
+.env

.env.example

@@ -0,0 +1,23 @@
+# 复制为 .env 后修改（.env 不进 git）。改完执行 docker compose up -d 生效。
+
+# 老师账号（只有一个）。学生账号由老师登录后在"班级管理"里导入名单
+TEACHER_USERNAME=admin
+TEACHER_PASSWORD=请改成不容易猜到的密码
+
+# AI 评阅：给老师评分项（界面、注释、命名）出建议分和评语，老师采纳后生效；不填就不做 AI 评阅
+DEEPSEEK_API_KEY=
+AI_MODEL=deepseek-flash
+
+# 平台最多使用的内存
+APP_MEM_LIMIT=4g
+
+# 全站同时运行的学生程序上限，超过时提示"服务器繁忙"
+SIM_MAX_RUNS=150
+# 每个学生程序的内存上限（MB）
+SIM_HEAP_LIMIT_MB=128
+# 每次运行累计 CPU 时间上限（秒），防止死循环占满 CPU
+SIM_CPU_LIMIT_SECONDS=120
+# 每次运行最长时间（分钟）
+SIM_MAX_RUN_MINUTES=60
+# 全站同时跑几个评分检查项（提交评分和"自己检查"共用）；2 核服务器不要超过 24，CPU 不够会误判
+SIM_GRADE_CONCURRENCY=16

.gitea/workflows/deploy.yml

@@ -0,0 +1,135 @@
+# push 到 origin（git.xuyue.cc）的 main 就部署：在开发机上编好产物、跑测试 → 产物 rsync 到服务器的 prebuilt/ →
+# 服务器上 deploy/update.sh --prebuilt（拉代码、用现成产物构建镜像、重启）。
+#
+# 跑在哪：开发机上的 gitea-runner（host 模式，标签 iot-deploy；和 OJ2 共用一个 runner，一次只跑一个任务，
+# 两边的部署排队，不会同时挤服务器）。runner 的装法见 deploy/README.md「自动部署」。
+#   - 服务器只有 2 核，学生程序也在上面跑，以前服务器自己编约一分钟，dotnet 和 vite 把两个核占满。
+#   - 以前在 GitHub 上测试（约 5 分钟）再 SSH 到服务器编，push 后 6 分钟多才上线。
+#   代价：**push 时开发机得开着。** 没开的话任务在 Gitea 里排队，开机后 runner 连上就接着跑；
+#   急着上线又不在开发机旁时，用 GitHub 上手动触发的备用部署（.github/workflows/ci.yml，服务器自己编）。
+#
+# host 模式直接用开发机自己的东西：PATH 里的 bun / dotnet / bwrap、~/.ssh/config 里的 `debian`（root@服务器）
+# 和 git.xuyue.cc 的 SSH 访问。所以这里**不需要配任何 secret**，也不用 actions/checkout。
+#
+# 有了 .gitea/workflows 之后，Gitea 不再读 .github/workflows。
+name: Deploy
+
+on:
+  push:
+    branches: [main]
+  # 在 Actions 页面手动重新部署（比如改了服务器上的 .env 之后）
+  workflow_dispatch:
+
+concurrency:
+  group: deploy
+  cancel-in-progress: false
+
+env:
+  REMOTE: debian # 开发机 ~/.ssh/config 里的主机名
+  REMOTE_DIR: /root/IOT_SIM
+  DOTNET_CLI_TELEMETRY_OPTOUT: '1'
+  DOTNET_NOLOGO: '1'
+
+jobs:
+  deploy:
+    runs-on: iot-deploy
+    timeout-minutes: 20
+    steps:
+      # 工作目录可能是上一次留下的，所以 fetch 之后强制切过去再清掉没跟踪的文件（node_modules 留着，bun install 会对齐它）
+      - name: 取代码
+        env:
+          SHA: ${{ gitea.sha }}
+          REPO: ${{ gitea.repository }}
+        run: |
+          git init -q .
+          git fetch -q --depth 1 "git@git.xuyue.cc:$REPO.git" "$SHA"
+          git checkout -q --force FETCH_HEAD
+          git clean -ffdxq -e node_modules
+          git log --oneline -1
+
+      # server.js 是开发机的 bun 打包的，到服务器上由镜像里的 bun（Dockerfile 里写死的版本）运行。
+      # 打包出来是普通 JS，不像 OJ2 的单二进制那样把 bun 本身带过去，版本差一点一般没事，所以只提醒不拦。
+      - name: 看 bun 版本
+        run: |
+          want=$(sed -nE 's|^FROM oven/bun:([0-9.]+).*|\1|p' Dockerfile | head -1)
+          have=$(bun --version)
+          echo "开发机 bun $have，镜像里 bun $want"
+          [ "$have" = "$want" ] || echo "::warning::开发机的 bun 是 $have，镜像里是 $want，升级 Dockerfile 和 ci.yml 里的版本，或者确认没有用到新版本才有的功能"
+
+      - name: 装依赖
+        run: bun install --frozen-lockfile
+
+      - name: 编 C# 运行时
+        run: dotnet build runtime/Runtime.slnx -c Release -v q
+
+      - name: 编网页、打包服务端
+        run: |
+          (cd web && bun run build)
+          bun build server/src/index.ts --target=bun --outfile=server.js
+
+      # 有一项不过就不部署。服务端测试用上一步编的 Release 版运行时，测的就是要上线的那份。
+      # --parallel 让 6 个测试文件同时跑；grading 里的测试标了 describe.concurrent，
+      # --max-concurrency 限制同时跑几个（太多时定时器来不及触发会误判）。挨个跑约 4 分钟，这样半分钟左右
+      - name: 测试
+        env:
+          RUNNER_DLL: runtime/Sim.Runner/bin/Release/net10.0/Sim.Runner.dll
+        run: |
+          (cd server && bun test --parallel --max-concurrency=8)
+          (cd web && bun test src && bunx vue-tsc --noEmit)
+
+      # 目录结构就是 Dockerfile 里 artifacts-prebuilt 阶段要的；COMMIT 让服务器确认产物和要部署的代码是同一个提交
+      - name: 收集产物
+        env:
+          SHA: ${{ gitea.sha }}
+        run: |
+          rm -rf prebuilt
+          mkdir -p prebuilt/runtime prebuilt/web
+          cp -a runtime/Sim.Runner/bin/Release/net10.0/. prebuilt/runtime/
+          cp -a web/dist/. prebuilt/web/
+          cp server.js prebuilt/
+          echo "$SHA" > prebuilt/COMMIT
+          du -sh prebuilt
+
+      # 只传产物，源码由服务器自己从 origin 拉（git.xuyue.cc 就在那台服务器上）。
+      #   -c               按内容比：每次编出来的 mtime 都是「刚才」，按 mtime 比会把没变的文件也传一遍
+      #   --delay-updates  全部传完才一起换上去，中途断了不会留下半新半旧的产物（反正 COMMIT 对不上也会被 update.sh 拦下）
+      #   --timeout        60 秒没有数据进出就算断了，交给循环重试，半截文件接着用
+      - name: 同步到服务器
+        timeout-minutes: 10
+        run: |
+          for attempt in 1 2 3; do
+            rsync -a -c --no-owner --no-group --delete-delay --delay-updates \
+              --compress --compress-choice=zstd \
+              --timeout=60 --stats --human-readable \
+              -e "ssh -o BatchMode=yes -o ServerAliveInterval=15 -o ServerAliveCountMax=4" \
+              prebuilt/ "$REMOTE:$REMOTE_DIR/prebuilt/" && exit 0
+            echo "::warning::rsync 第 $attempt 次没传完，10 秒后重试"
+            sleep 10
+          done
+          exit 1
+
+      # 先把服务器上的代码切到这个提交再跑 update.sh：不然跑的是上一版的 update.sh，改了它要晚一次部署才生效。
+      # 重启会结束正在运行的学生程序，上课时间尽量不要推送 main。
+      #
+      # update.sh 由 update-bg.sh 在服务器上后台跑，SSH 断了（开发机切代理、换网络）它照样跑完；
+      # 这边 ssh 返回 255（连接出错）就重连，用 --follow 接着看、拿退出码。
+      # 75 = 服务器上这个提交的部署还没开始（断在 git fetch 那里），重新开始。
+      - name: 起服务
+        timeout-minutes: 10
+        env:
+          SHA: ${{ gitea.sha }}
+        run: |
+          remote() { ssh -o BatchMode=yes -o ConnectTimeout=20 -o ServerAliveInterval=15 -o ServerAliveCountMax=8 "$REMOTE" "$1"; }
+          start="cd $REMOTE_DIR && git fetch --quiet origin && git reset --quiet --hard $SHA && deploy/update-bg.sh $SHA --prebuilt"
+          follow="cd $REMOTE_DIR && deploy/update-bg.sh --follow $SHA"
+          code=0; remote "$start" || code=$?
+          for attempt in 1 2 3 4 5 6; do
+            case $code in
+              255) echo "::warning::和服务器的 SSH 断了，部署在服务器上接着跑，10 秒后重连接着看"
+                   sleep 10; code=0; remote "$follow" || code=$? ;;
+              75)  echo "::warning::服务器上的部署还没开始，重新开始"
+                   code=0; remote "$start" || code=$? ;;
+              *)   exit $code ;;
+            esac
+          done
+          exit $code

.github/workflows/ci.yml

@@ -0,0 +1,103 @@
+# 备用路线。平时 push origin（git.xuyue.cc）后，由开发机上的 gitea-runner 测试、编好、部署（.gitea/workflows/deploy.yml），
+# 这里 push 不再触发，免得每次推送在两边各测一遍、各部署一遍。
+#   - PR：只跑测试。
+#   - 手动触发（Actions → CI/CD → Run workflow）：测试通过后 SSH 到服务器执行 deploy/update.sh，服务器从 origin 拉代码、
+#     **自己编**、重启。开发机不在、又急着上线时用。部署需要的 Secrets 见 deploy/README.md 的"自动部署"一节。
+# 只在 github.com 上运行（Gitea 有了 .gitea/workflows 后不再读这个目录，if 再保一道）。
+name: CI/CD
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    if: github.server_url == 'https://github.com'
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.4.4
+
+      - uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: 10.0.x
+
+      # 测试里学生程序在 bubblewrap 沙箱中运行；Ubuntu 24.04 默认禁止非特权用户命名空间，要先放开
+      - name: 准备沙箱
+        run: |
+          sudo apt-get update -q
+          sudo apt-get install -y -q bubblewrap
+          sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
+
+      - run: bun install --frozen-lockfile
+
+      - name: 编译 C# 运行时
+        run: bun run build:runtime
+
+      # 文件之间同时跑，grading 里的测试也同时跑（describe.concurrent），见 .gitea/workflows/deploy.yml 同名一步
+      - name: 服务端测试（编译并运行示例、沙箱、编译检查）
+        working-directory: server
+        run: bun test --parallel --max-concurrency=8
+
+      - name: 网页端测试和类型检查
+        working-directory: web
+        run: |
+          bun test src
+          bunx vue-tsc --noEmit
+
+  deploy:
+    needs: test
+    if: github.server_url == 'https://github.com' && github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-24.04
+    # 服务器构建约几分钟；卡住时及时失败，不要一直占着
+    timeout-minutes: 20
+    # 连续推送时排队部署，不会两次部署同时进行
+    concurrency:
+      group: deploy
+      cancel-in-progress: false
+    environment: production
+    steps:
+      # Secrets 还没配置时跳过部署（只跑测试），不算失败
+      - name: 检查部署配置
+        id: check
+        env:
+          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
+        run: |
+          if [ -n "$DEPLOY_HOST" ]; then
+            echo "configured=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "::notice::没有配置 DEPLOY_HOST 等 Secrets，跳过部署（配置方法见 deploy/README.md）"
+          fi
+
+      - name: 配置 SSH
+        if: steps.check.outputs.configured == 'true'
+        env:
+          SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
+          DEPLOY_USER: ${{ secrets.DEPLOY_USER }}
+          DEPLOY_PORT: ${{ secrets.DEPLOY_PORT }}
+        run: |
+          mkdir -p ~/.ssh && chmod 700 ~/.ssh
+          printf '%s\n' "$SSH_KEY" > ~/.ssh/deploy_key
+          chmod 600 ~/.ssh/deploy_key
+          cat > ~/.ssh/config <<EOF
+          Host deploy-target
+            HostName $DEPLOY_HOST
+            User $DEPLOY_USER
+            Port ${DEPLOY_PORT:-22}
+            IdentityFile ~/.ssh/deploy_key
+            IdentitiesOnly yes
+            # 不预先登记服务器公钥，第一次连接时自动接受
+            StrictHostKeyChecking accept-new
+            # 认证失败立即报错，不等输入密码
+            BatchMode yes
+            ConnectTimeout 30
+            ServerAliveInterval 30
+          EOF
+
+      - name: 部署（在服务器上拉代码、构建、重启）
+        if: steps.check.outputs.configured == 'true'
+        run: ssh deploy-target "cd ${{ vars.DEPLOY_DIR || 'IOT_SIM' }} && deploy/update-bg.sh ${{ github.sha }}"

.gitignore

@@ -10,9 +10,23 @@ obj/
 
 # 教材资料（体积大、有版权，不进仓库）
 物联网编程与应用配套/
+# 导出 EXE 用的教材设备类库（真机版 dll），部署时放在服务器上挂进容器
+/textbook-libs/
 *.pdf
 
 # 编辑器
 .vscode/
 .idea/
 .DS_Store
+
+# 部署配置（含访问口令）
+.env
+
+# 本机开发的数据库
+/data/
+
+# 服务器上 deploy/backup.sh 做的备份
+/backups/
+
+# 开发机上的 gitea-runner 编好传到服务器的产物（.gitea/workflows/deploy.yml）
+/prebuilt/

.prettierignore

@@ -0,0 +1,3 @@
+# bun fmt 不格式化的文件
+# 书上的摘录，保持原样
+docs/教材摘要/

Dockerfile

@@ -0,0 +1,68 @@
+# 物联网编程仿真平台：一个镜像里包含 Bun 服务端、打包好的网页、.NET 运行时和 bubblewrap 沙箱。
+# 构建：docker compose build；部署说明见 deploy/README.md
+#
+# 产物（C# 运行时、网页、server.js）有两种来源，由构建参数 ARTIFACTS 选：
+#   build     （默认）在镜像里编。只要有 docker 就能构建，但服务器只有 2 核，编一次约一分钟，期间学生程序会卡
+#   prebuilt  用 prebuilt/ 里现成的产物（开发机上的 gitea-runner 编好、测过后 rsync 过来，见 .gitea/workflows/deploy.yml），
+#             镜像构建只剩几条 COPY。buildx 不会去跑用不到的 runtime-build / web-build 阶段
+ARG ARTIFACTS=build
+
+# ---- C# 运行时（编译服务 + 仿真库） ----
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS runtime-build
+WORKDIR /src
+COPY runtime/ runtime/
+RUN dotnet build runtime/Runtime.slnx -c Release
+
+# ---- 网页和服务端 ----
+FROM oven/bun:1.4.4 AS web-build
+WORKDIR /src
+COPY package.json bun.lock ./
+COPY shared/package.json shared/
+COPY server/package.json server/
+COPY web/package.json web/
+RUN bun install --frozen-lockfile
+COPY shared/ shared/
+COPY server/ server/
+COPY web/ web/
+RUN cd web && bun run build
+# 服务端打包成单个文件，运行镜像里不需要 node_modules
+RUN bun build server/src/index.ts --target=bun --outfile=server.js
+
+# ---- 产物：在镜像里编的 ----
+FROM scratch AS artifacts-build
+COPY --from=runtime-build /src/runtime/Sim.Runner/bin/Release/net10.0/ /runtime/
+COPY --from=web-build /src/web/dist/ /web/
+COPY --from=web-build /src/server.js /server.js
+
+# ---- 产物：现成的（目录结构和上面一样，名字里不带 dist / bin，免得被 .dockerignore 挡掉） ----
+FROM scratch AS artifacts-prebuilt
+COPY prebuilt/runtime/ /runtime/
+COPY prebuilt/web/ /web/
+COPY prebuilt/server.js /server.js
+
+FROM artifacts-${ARTIFACTS} AS artifacts
+
+# ---- 运行镜像 ----
+FROM mcr.microsoft.com/dotnet/runtime:10.0
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends bubblewrap tzdata \
+    && rm -rf /var/lib/apt/lists/*
+COPY --from=oven/bun:1.4.4 /usr/local/bin/bun /usr/local/bin/bun
+WORKDIR /app
+COPY --from=artifacts /runtime/ runtime/
+COPY --from=artifacts /web/ web/dist/
+COPY --from=artifacts /server.js ./
+COPY samples/ samples/
+ENV APP_ROOT=/app \
+    RUNNER_DLL=runtime/Sim.Runner.dll \
+    RUNS_DIR=/tmp/runs \
+    SIM_SANDBOX=bwrap \
+    TZ=Asia/Shanghai \
+    PORT=3000 \
+    DOTNET_CLI_TELEMETRY_OPTOUT=1
+# 数据目录（数据卷挂在这里）属于运行平台的用户，新建的数据卷会继承这个属主
+RUN mkdir -p /data && chown "$APP_UID" /data
+# 镜像自带的非 root 用户
+USER $APP_UID
+EXPOSE 3000
+CMD ["bun", "server.js"]

README.md

@@ -1,22 +1,23 @@
 # 物联网编程仿真平台
 
 面向中职《物联网编程与应用（第 2 版）》的在线仿真平台：学生在浏览器里写 C# WinForms 程序，
-程序在服务器上运行，界面和虚拟实训台的效果在网页上实时显示。设计方案见 Claude Docs 中的《物联网 C# 虚拟仿真教学平台设计方案》。
+程序在服务器上运行，界面和虚拟实训台的效果在网页上实时显示。设计方案见 [docs/设计方案.md](docs/设计方案.md)。
 
 ## 目录
 
 | 目录       | 内容                                                                                                                                               |
-|---|---|
+| ---------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `web/`     | Vue 3 前端：代码编辑、虚拟窗体渲染、虚拟实训台                                                                                                     |
 | `server/`  | Bun 后端：示例工程接口，WebSocket 会话，为每次运行启动一个 C# 运行器                                                                               |
 | `shared/`  | 浏览器、服务器、运行器之间的消息协议（`protocol.ts`）                                                                                              |
-| `runtime/` | .NET 10：仿真 WinForms（`Sim.WinForms`）、教材设备类库（`Sim.Devices`）、运行器（`Sim.Runner`） |
+| `runtime/` | .NET 10：仿真 WinForms（`Sim.WinForms`）、教材设备类库（`Sim.Devices`）、仿冒 SqlClient（`Sim.Data`，T-SQL 转写成 SQLite）、运行器（`Sim.Runner`） |
 | `samples/` | 示例工程（按教材任务整理）                                                                                                                         |
-| `docs/教材摘要/` | 教材逐任务摘要：控件属性表、扩展题原文、评价表 |
+| `docs/`    | 设计方案（`设计方案.md`）、教材逐任务摘要（`教材摘要/`）                                                                                           |
+| `deploy/`  | 部署：Caddyfile、部署脚本和说明（`deploy/README.md`）                                                                                              |
 
 ## 本地开发
 
-需要 Bun 和 .NET 10 SDK。
+需要 Bun 和 .NET 10 SDK；装了 bubblewrap（`bwrap`）时，学生程序在本机也会放进沙箱运行，和服务器一致。
 
 ```bash
 bun install                 # 安装前端和后端依赖
@@ -30,14 +31,22 @@ bun run dev:web             # 启动前端（端口 5173），浏览器打开 ht
 ```bash
 cd server
 bun test              # 端到端测试：编译并运行示例，模拟浏览器操作
+cd ../web && bun test src   # 窗体设计器：Designer.cs 读写、编辑操作、插入事件处理方法
 bun test/load.ts 100  # 压力测试：同时运行 100 个学生程序
+BASE=http://localhost:3000 bun test/classroom.ts 45  # 全班模拟：45 个学生登录、运行、自测、提交，统计每个环节等多久
 ```
 
-## 运行器的两种模式
+## 部署
+
+Docker Compose，HTTPS 由服务器上的 Nginx Proxy Manager 负责。push 到 origin（git.xuyue.cc）的 main 后，开发机上的 gitea-runner 跑完测试、编好产物传到服务器，服务器拉代码、用现成产物构建镜像、重启（`deploy/update.sh --prebuilt`）；GitHub 上手动触发是备用路线，由服务器自己编。详见 [deploy/README.md](deploy/README.md)。
+
+## 运行器的四种模式
 
 `Sim.Runner` 通过标准输入输出与 Bun 服务器交换 JSON 消息（每行一条）：
 
 - `compile-server`：常驻编译服务，全服务器共用一个。Roslyn 只加载一次，编译结果写回工程目录。
+- `language-server`：常驻语言服务，全服务器共用一个：代码补全、悬停提示、参数提示、边写边检查。
+- `sql-server`：常驻 SQL 服务，全服务器共用一个：数据库页面的查询和对象资源管理器，评分前按实验的 `database.sql` 建库。学生的数据库在 `data/databases/<用户编号>/`，每个库一个 SQLite 文件。
 - `run <工程目录>`：运行已编译的学生程序，每次运行一个进程，不加载编译器。
 
 ## 当前进度：第 0 阶段（技术验证）已跑通
@@ -47,7 +56,7 @@ bun test/load.ts 100  # 压力测试：同时运行 100 个学生程序
 本机实测（16 核、28 GB）：
 
 | 指标                     | 结果                                                        |
-|---|---|
+| ------------------------ | ----------------------------------------------------------- |
 | 编译（编译服务预热后）   | 约 10–300 ms                                                |
 | 启动到窗体显示           | 约 100 ms                                                   |
 | 单次操作往返             | 约 15 ms                                                    |
@@ -59,10 +68,17 @@ bun test/load.ts 100  # 压力测试：同时运行 100 个学生程序
 已完成：
 
 - **虚拟实训台**：按教材实训台布局图排列（红外对射、警示灯、LED 屏、照明灯、人体红外、温湿度、光照、烟雾、火焰、ADAM 模块）。每个浏览器会话一台，状态由服务器统一保存：传感器读数由网页上的滑块和开关设定，经服务器推给学生程序；灯、继电器、LED 屏由学生程序控制。
-- 新控件：CheckBox、RadioButton（事件顺序与 WinForms 一致），教材控件库的 Lamp、Alarm。
+- 新控件：CheckBox、RadioButton（事件顺序与 WinForms 一致）、ListBox、PictureBox、DataGridView、DateTimePicker、TrackBar、Windows Media Player、Chart（图表），教材控件库的 Lamp、Alarm；Panel 停靠布局、背景图片、无边框窗体。
-- 示例工程（按书上代码整理）：项目 2 任务 1–3、项目 3 任务 1–2。网址带 `?sample=示例编号` 可直接打开指定示例。
+- 示例工程（按书上代码整理）：项目 1 任务 1–2、项目 2 任务 1–3、项目 3 任务 1–2、项目 4 任务 1–3、项目 5 任务 1–3、项目 6 任务 2–3、项目 7 任务 1–3、项目 8 任务 1–5，共 23 个（项目 6 任务 1 在数据库页面上完成）。网址带 `?sample=示例编号` 可直接打开指定示例。
+- 代码编辑器（Monaco）：C# 高亮、编译错误波浪线、点错误跳到对应行、F5 运行 / Shift+F5 停止、草稿自动保存在浏览器本地。
+- 窗体设计器（仿 VS，界面中文）：工具箱、拖放与改大小、属性窗口、事件窗口、双击生成事件处理方法、撤销 / 重做；读写 VS 格式的 Designer.cs。
+- 多窗体：新建、删除窗体；运行时多个窗口可切换前后。
+- 导出 EXE：学生的程序照教材工程（.NET Framework 4.5、真机版设备类库）编译成一个 exe，教材 dll 嵌在里面，在机房电脑上双击就能控制真的实训台（`runtime/Sim.Runner/ExeExporter.cs`）；导出 VS 工程：打包成教材那样的 VS 2012 工程（zip），先照机房环境（C# 5）检查（`runtime/Sim.Runner/ProjectExporter.cs`）。教材 dll 有版权，不进仓库：本机放在 `textbook-libs/`，服务器上的放法见 [deploy/README.md](deploy/README.md)。
+- 部署：bubblewrap 沙箱（断网、只读、看不到其他进程，限制内存、CPU 时间和运行时长）、编译时禁止网络 / 反射 / 启动进程等 API、Docker Compose、push origin 自动部署（开发机上的 gitea-runner 测试、编好再传到服务器）。
+- 第 2 阶段（进行中）：账号登录（本机开发时老师账号为 admin / admin）、班级管理与 CSV 名单导入、学生作品保存在服务器上；自动评分（每个示例的 `checks.yaml`）；实验页"评价项"可以自己检查（不计分）；布置作业、学生提交后自动评分；老师评阅（看代码和界面截图、运行学生的程序、老师评分项打分、评语）、AI 评阅建议（DeepSeek，老师采纳后生效）、全班成绩表与 CSV 导出。
+- 第 3 阶段（教材项目 4–8 已全部完成）：教材项目 5 用到的旧版线程 API（`Thread.Suspend` / `Resume` / `Abort`）编译时改写成平台的协作式实现（`runtime/Sim.Runner/LegacyThreadRewriter.cs`、`runtime/Sim.WinForms/Host/LegacyThreads.cs`）；网络摄像机（画面帧由 `runtime/Sim.Devices/Camera/build-frames.ts` 从 `scene.svg` 生成，需要 rsvg-convert 和 ImageMagick）。
 
 尚未完成：
 
-- 学生代码目前直接在本机进程里运行，**还没有沙箱**，只能在本机开发时使用；部署前要改为在 Docker 容器中运行。
+- 一个班试用。
-- 浏览器内的窗体设计器、代码编辑器（Monaco）、账号和班级、自动评测。
+- 书上的扩展练习（"边想边做""自主探究"）、校园街景场景、故障注入题库（第 4 阶段）。

bun.lock

@@ -23,8 +23,12 @@
       "name": "@iot/web",
       "dependencies": {
         "@iot/shared": "workspace:*",
+        "chart.js": "^4.6.1",
+        "modern-screenshot": "^4.7.0",
+        "monaco-editor": "^0.57.0",
         "naive-ui": "^2.41.0",
         "vue": "^3.5.0",
+        "vue-router": "^4.6.4",
       },
       "devDependencies": {
         "@types/bun": "^1.2.0",
@@ -36,71 +40,71 @@
     },
   },
   "packages": {
-    "@babel/helper-string-parser": ["@babel/helper-string-parser@7.29.7", "", {}, "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw=="],
+    "@babel/helper-string-parser": ["@babel/helper-string-parser@7.29.7", "https://registry.npmjs.com/@babel/helper-string-parser/-/helper-string-parser-7.29.7.tgz", {}, "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw=="],
 
-    "@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.29.7", "", {}, "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg=="],
+    "@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.29.7", "https://registry.npmjs.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.29.7.tgz", {}, "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg=="],
 
-    "@babel/parser": ["@babel/parser@7.29.9", "", { "dependencies": { "@babel/types": "^7.29.8" }, "bin": "./bin/babel-parser.js" }, "sha512-CjXrNHTnvqBVqHgdBysY3vk2T8tpJHb5/RMeHJBTyVa9xgugCB0CJTx/3oO8RV2QRQP391RWpB7D6hLjm8V9uA=="],
+    "@babel/parser": ["@babel/parser@7.29.9", "https://registry.npmjs.com/@babel/parser/-/parser-7.29.9.tgz", { "dependencies": { "@babel/types": "^7.29.8" }, "bin": "./bin/babel-parser.js" }, "sha512-CjXrNHTnvqBVqHgdBysY3vk2T8tpJHb5/RMeHJBTyVa9xgugCB0CJTx/3oO8RV2QRQP391RWpB7D6hLjm8V9uA=="],
 
-    "@babel/types": ["@babel/types@7.29.8", "", { "dependencies": { "@babel/helper-string-parser": "^7.29.7", "@babel/helper-validator-identifier": "^7.29.7" } }, "sha512-Vj1jF3cPfxg7OAfoI7QnVKLoILlm2JF9pnVHrX8qx7AHMiYWT+NDAA7jChlNgRS4WTLc/fD1lXLmPixluj+3Gg=="],
+    "@babel/types": ["@babel/types@7.29.8", "https://registry.npmjs.com/@babel/types/-/types-7.29.8.tgz", { "dependencies": { "@babel/helper-string-parser": "^7.29.7", "@babel/helper-validator-identifier": "^7.29.7" } }, "sha512-Vj1jF3cPfxg7OAfoI7QnVKLoILlm2JF9pnVHrX8qx7AHMiYWT+NDAA7jChlNgRS4WTLc/fD1lXLmPixluj+3Gg=="],
 
-    "@css-render/plugin-bem": ["@css-render/plugin-bem@0.15.14", "", { "peerDependencies": { "css-render": "~0.15.14" } }, "sha512-QK513CJ7yEQxm/P3EwsI+d+ha8kSOcjGvD6SevM41neEMxdULE+18iuQK6tEChAWMOQNQPLG/Rw3Khb69r5neg=="],
+    "@css-render/plugin-bem": ["@css-render/plugin-bem@0.15.14", "https://registry.npmjs.com/@css-render/plugin-bem/-/plugin-bem-0.15.14.tgz", { "peerDependencies": { "css-render": "~0.15.14" } }, "sha512-QK513CJ7yEQxm/P3EwsI+d+ha8kSOcjGvD6SevM41neEMxdULE+18iuQK6tEChAWMOQNQPLG/Rw3Khb69r5neg=="],
 
-    "@css-render/vue3-ssr": ["@css-render/vue3-ssr@0.15.14", "", { "peerDependencies": { "vue": "^3.0.11" } }, "sha512-//8027GSbxE9n3QlD73xFY6z4ZbHbvrOVB7AO6hsmrEzGbg+h2A09HboUyDgu+xsmj7JnvJD39Irt+2D0+iV8g=="],
+    "@css-render/vue3-ssr": ["@css-render/vue3-ssr@0.15.14", "https://registry.npmjs.com/@css-render/vue3-ssr/-/vue3-ssr-0.15.14.tgz", { "peerDependencies": { "vue": "^3.0.11" } }, "sha512-//8027GSbxE9n3QlD73xFY6z4ZbHbvrOVB7AO6hsmrEzGbg+h2A09HboUyDgu+xsmj7JnvJD39Irt+2D0+iV8g=="],
 
-    "@emotion/hash": ["@emotion/hash@0.8.0", "", {}, "sha512-kBJtf7PH6aWwZ6fka3zQ0p6SBYzx4fl1LoZXE2RrnYST9Xljm7WfKJrU4g/Xr3Beg72MLrp1AWNUmuYJTL7Cow=="],
+    "@emotion/hash": ["@emotion/hash@0.8.0", "https://registry.npmjs.com/@emotion/hash/-/hash-0.8.0.tgz", {}, "sha512-kBJtf7PH6aWwZ6fka3zQ0p6SBYzx4fl1LoZXE2RrnYST9Xljm7WfKJrU4g/Xr3Beg72MLrp1AWNUmuYJTL7Cow=="],
 
-    "@esbuild/aix-ppc64": ["@esbuild/aix-ppc64@0.28.2", "", { "os": "aix", "cpu": "ppc64" }, "sha512-XExcO+dvLKvVtNTibSTBej1NCAbaGhWn9Ww1ZPx80qsahhPFe/8jgWP0IchNe0F3HwkU7n8ejhH8bjonqht8mQ=="],
+    "@esbuild/aix-ppc64": ["@esbuild/aix-ppc64@0.28.2", "https://registry.npmjs.com/@esbuild/aix-ppc64/-/aix-ppc64-0.28.2.tgz", { "os": "aix", "cpu": "ppc64" }, "sha512-XExcO+dvLKvVtNTibSTBej1NCAbaGhWn9Ww1ZPx80qsahhPFe/8jgWP0IchNe0F3HwkU7n8ejhH8bjonqht8mQ=="],
 
-    "@esbuild/android-arm": ["@esbuild/android-arm@0.28.2", "", { "os": "android", "cpu": "arm" }, "sha512-kXXoiPVVGQcnIYGOeaovwOURpniDBpSq4A03qkQ+BMQqtGG6HYap3xne9C1O1yo4TR3qxlCX5IqqmX6fFo2Lqg=="],
+    "@esbuild/android-arm": ["@esbuild/android-arm@0.28.2", "https://registry.npmjs.com/@esbuild/android-arm/-/android-arm-0.28.2.tgz", { "os": "android", "cpu": "arm" }, "sha512-kXXoiPVVGQcnIYGOeaovwOURpniDBpSq4A03qkQ+BMQqtGG6HYap3xne9C1O1yo4TR3qxlCX5IqqmX6fFo2Lqg=="],
 
-    "@esbuild/android-arm64": ["@esbuild/android-arm64@0.28.2", "", { "os": "android", "cpu": "arm64" }, "sha512-5YfKeeI8qWfBZIX+u2xZC3Zlb3Os/gLS2sbEKM+I4ZOcsWmHS2WLysCcQZDAFRslDUU5Oiq44gf6PYN1vGwG5A=="],
+    "@esbuild/android-arm64": ["@esbuild/android-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/android-arm64/-/android-arm64-0.28.2.tgz", { "os": "android", "cpu": "arm64" }, "sha512-5YfKeeI8qWfBZIX+u2xZC3Zlb3Os/gLS2sbEKM+I4ZOcsWmHS2WLysCcQZDAFRslDUU5Oiq44gf6PYN1vGwG5A=="],
 
-    "@esbuild/android-x64": ["@esbuild/android-x64@0.28.2", "", { "os": "android", "cpu": "x64" }, "sha512-O387ite7SzUyCcy3JQX4P4bLtEA7bLLkx+esve5JHnyYfNTxcVpXZo9jhdB0lTKN44gztELTdU7nS8Nr16Fs1Q=="],
+    "@esbuild/android-x64": ["@esbuild/android-x64@0.28.2", "https://registry.npmjs.com/@esbuild/android-x64/-/android-x64-0.28.2.tgz", { "os": "android", "cpu": "x64" }, "sha512-O387ite7SzUyCcy3JQX4P4bLtEA7bLLkx+esve5JHnyYfNTxcVpXZo9jhdB0lTKN44gztELTdU7nS8Nr16Fs1Q=="],
 
-    "@esbuild/darwin-arm64": ["@esbuild/darwin-arm64@0.28.2", "", { "os": "darwin", "cpu": "arm64" }, "sha512-n4KqkOQrraxHJcgjM1RvwbigfQKIKJVpM7xp+KsxiyUSrRdIXnt73VhrPAx0fV44hgfmIVKjxMN9J1t5jySVkw=="],
+    "@esbuild/darwin-arm64": ["@esbuild/darwin-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/darwin-arm64/-/darwin-arm64-0.28.2.tgz", { "os": "darwin", "cpu": "arm64" }, "sha512-n4KqkOQrraxHJcgjM1RvwbigfQKIKJVpM7xp+KsxiyUSrRdIXnt73VhrPAx0fV44hgfmIVKjxMN9J1t5jySVkw=="],
 
-    "@esbuild/darwin-x64": ["@esbuild/darwin-x64@0.28.2", "", { "os": "darwin", "cpu": "x64" }, "sha512-uq6suIWYP37qzGddBKPw5QEQPi6HiLGsO7UmkpfyaYNQ3D+rN6w6WfwH+nuqcGXWvawGwxOEroO4YGnFh95azw=="],
+    "@esbuild/darwin-x64": ["@esbuild/darwin-x64@0.28.2", "https://registry.npmjs.com/@esbuild/darwin-x64/-/darwin-x64-0.28.2.tgz", { "os": "darwin", "cpu": "x64" }, "sha512-uq6suIWYP37qzGddBKPw5QEQPi6HiLGsO7UmkpfyaYNQ3D+rN6w6WfwH+nuqcGXWvawGwxOEroO4YGnFh95azw=="],
 
-    "@esbuild/freebsd-arm64": ["@esbuild/freebsd-arm64@0.28.2", "", { "os": "freebsd", "cpu": "arm64" }, "sha512-n+I0BTSRIoy+d6RPKnEVwql5UwBJolytvY4mAOIEJorKlqgPII8ix6slVVrfZ5Tnj7glIZvloylbB/EJPMWEXw=="],
+    "@esbuild/freebsd-arm64": ["@esbuild/freebsd-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/freebsd-arm64/-/freebsd-arm64-0.28.2.tgz", { "os": "freebsd", "cpu": "arm64" }, "sha512-n+I0BTSRIoy+d6RPKnEVwql5UwBJolytvY4mAOIEJorKlqgPII8ix6slVVrfZ5Tnj7glIZvloylbB/EJPMWEXw=="],
 
-    "@esbuild/freebsd-x64": ["@esbuild/freebsd-x64@0.28.2", "", { "os": "freebsd", "cpu": "x64" }, "sha512-78XJTJkvPs0kz2w61301PJjXl4g7q3JqiYMZ/M/yVI73EHBrCRTgkhu9oqG7vPqq+a/yadEW8aD+agKlk5xrmg=="],
+    "@esbuild/freebsd-x64": ["@esbuild/freebsd-x64@0.28.2", "https://registry.npmjs.com/@esbuild/freebsd-x64/-/freebsd-x64-0.28.2.tgz", { "os": "freebsd", "cpu": "x64" }, "sha512-78XJTJkvPs0kz2w61301PJjXl4g7q3JqiYMZ/M/yVI73EHBrCRTgkhu9oqG7vPqq+a/yadEW8aD+agKlk5xrmg=="],
 
-    "@esbuild/linux-arm": ["@esbuild/linux-arm@0.28.2", "", { "os": "linux", "cpu": "arm" }, "sha512-XlDnu2q5yoqems+xay6wSAcg9DDD7K9RLKZEBOMZm3ckNpJBvOX20tSfby8KfrrhINDyv9V2YVZKY/SpoGJI8w=="],
+    "@esbuild/linux-arm": ["@esbuild/linux-arm@0.28.2", "https://registry.npmjs.com/@esbuild/linux-arm/-/linux-arm-0.28.2.tgz", { "os": "linux", "cpu": "arm" }, "sha512-XlDnu2q5yoqems+xay6wSAcg9DDD7K9RLKZEBOMZm3ckNpJBvOX20tSfby8KfrrhINDyv9V2YVZKY/SpoGJI8w=="],
 
-    "@esbuild/linux-arm64": ["@esbuild/linux-arm64@0.28.2", "", { "os": "linux", "cpu": "arm64" }, "sha512-pW4AC0P3it8c7do9MVM4p51FzHzdM/TZrerurgRcHJ2WTa1VQ1CIq18xncfpBJw4ojkiZZrKW2yIBWBP92j6Ug=="],
+    "@esbuild/linux-arm64": ["@esbuild/linux-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/linux-arm64/-/linux-arm64-0.28.2.tgz", { "os": "linux", "cpu": "arm64" }, "sha512-pW4AC0P3it8c7do9MVM4p51FzHzdM/TZrerurgRcHJ2WTa1VQ1CIq18xncfpBJw4ojkiZZrKW2yIBWBP92j6Ug=="],
 
-    "@esbuild/linux-ia32": ["@esbuild/linux-ia32@0.28.2", "", { "os": "linux", "cpu": "ia32" }, "sha512-CYbnj78HsIeA+DhgUKgFCfvNsTHFhMMrinUrMZpDXJXKN8T3XViTZ/+wtHeVxEWY8ewSzTFN+nRmSwO2tZaLUQ=="],
+    "@esbuild/linux-ia32": ["@esbuild/linux-ia32@0.28.2", "https://registry.npmjs.com/@esbuild/linux-ia32/-/linux-ia32-0.28.2.tgz", { "os": "linux", "cpu": "ia32" }, "sha512-CYbnj78HsIeA+DhgUKgFCfvNsTHFhMMrinUrMZpDXJXKN8T3XViTZ/+wtHeVxEWY8ewSzTFN+nRmSwO2tZaLUQ=="],
 
-    "@esbuild/linux-loong64": ["@esbuild/linux-loong64@0.28.2", "", { "os": "linux", "cpu": "none" }, "sha512-buwkd8nsph4R+ajRvw0qM5Hja/TXQow3ptzWO2EbG/cqcIkHloRrdlBtQlshyYGTNFvfkfJ5tpPLVkY4DtsPfQ=="],
+    "@esbuild/linux-loong64": ["@esbuild/linux-loong64@0.28.2", "https://registry.npmjs.com/@esbuild/linux-loong64/-/linux-loong64-0.28.2.tgz", { "os": "linux", "cpu": "none" }, "sha512-buwkd8nsph4R+ajRvw0qM5Hja/TXQow3ptzWO2EbG/cqcIkHloRrdlBtQlshyYGTNFvfkfJ5tpPLVkY4DtsPfQ=="],
 
-    "@esbuild/linux-mips64el": ["@esbuild/linux-mips64el@0.28.2", "", { "os": "linux", "cpu": "none" }, "sha512-ZVykbDyk7519VwiNb9Lcj9m8XM6v5V9uKPvrEMkkEedVewf+0itkhahp4HDpgERXhwLRpWFypsGbG/J8s0QjJA=="],
+    "@esbuild/linux-mips64el": ["@esbuild/linux-mips64el@0.28.2", "https://registry.npmjs.com/@esbuild/linux-mips64el/-/linux-mips64el-0.28.2.tgz", { "os": "linux", "cpu": "none" }, "sha512-ZVykbDyk7519VwiNb9Lcj9m8XM6v5V9uKPvrEMkkEedVewf+0itkhahp4HDpgERXhwLRpWFypsGbG/J8s0QjJA=="],
 
-    "@esbuild/linux-ppc64": ["@esbuild/linux-ppc64@0.28.2", "", { "os": "linux", "cpu": "ppc64" }, "sha512-CAXl+Dtd9UUuJd8pKKdwh6MLm3MUMiqMPmhZ3tTSXPqfyQ3vDl6R5hZdZ/kYojK4ofXtdfSv1tFq8XzWx3heNQ=="],
+    "@esbuild/linux-ppc64": ["@esbuild/linux-ppc64@0.28.2", "https://registry.npmjs.com/@esbuild/linux-ppc64/-/linux-ppc64-0.28.2.tgz", { "os": "linux", "cpu": "ppc64" }, "sha512-CAXl+Dtd9UUuJd8pKKdwh6MLm3MUMiqMPmhZ3tTSXPqfyQ3vDl6R5hZdZ/kYojK4ofXtdfSv1tFq8XzWx3heNQ=="],
 
-    "@esbuild/linux-riscv64": ["@esbuild/linux-riscv64@0.28.2", "", { "os": "linux", "cpu": "none" }, "sha512-GeXCej4IQtU1B+QlDV8W/RRvbzI3O/Stss+/bCXv4lZls5WGRtu2a+3JkA3i4qIUlMXpcHebWpF8AkJhATowuA=="],
+    "@esbuild/linux-riscv64": ["@esbuild/linux-riscv64@0.28.2", "https://registry.npmjs.com/@esbuild/linux-riscv64/-/linux-riscv64-0.28.2.tgz", { "os": "linux", "cpu": "none" }, "sha512-GeXCej4IQtU1B+QlDV8W/RRvbzI3O/Stss+/bCXv4lZls5WGRtu2a+3JkA3i4qIUlMXpcHebWpF8AkJhATowuA=="],
 
-    "@esbuild/linux-s390x": ["@esbuild/linux-s390x@0.28.2", "", { "os": "linux", "cpu": "s390x" }, "sha512-3H1weTYZPxt/WOhByszQZybS9w5lKzUn1FDMsgEChbHWQwHYQQRfBxgCcZvPhjHfKyJjIievvMmEUawJrdY9Dg=="],
+    "@esbuild/linux-s390x": ["@esbuild/linux-s390x@0.28.2", "https://registry.npmjs.com/@esbuild/linux-s390x/-/linux-s390x-0.28.2.tgz", { "os": "linux", "cpu": "s390x" }, "sha512-3H1weTYZPxt/WOhByszQZybS9w5lKzUn1FDMsgEChbHWQwHYQQRfBxgCcZvPhjHfKyJjIievvMmEUawJrdY9Dg=="],
 
-    "@esbuild/linux-x64": ["@esbuild/linux-x64@0.28.2", "", { "os": "linux", "cpu": "x64" }, "sha512-4xTZr1FUmSoQW4XIWmit3tzQrUTZM+N3P0XV8xROKYF50XfI7xeO90+1bZvNwxIufQ9hDQVRJH5YhgPVF8A/HQ=="],
+    "@esbuild/linux-x64": ["@esbuild/linux-x64@0.28.2", "https://registry.npmjs.com/@esbuild/linux-x64/-/linux-x64-0.28.2.tgz", { "os": "linux", "cpu": "x64" }, "sha512-4xTZr1FUmSoQW4XIWmit3tzQrUTZM+N3P0XV8xROKYF50XfI7xeO90+1bZvNwxIufQ9hDQVRJH5YhgPVF8A/HQ=="],
 
-    "@esbuild/netbsd-arm64": ["@esbuild/netbsd-arm64@0.28.2", "", { "os": "none", "cpu": "arm64" }, "sha512-sSATRjPeDBg3pdgHoQfoYBob11Kk1FGa9lui5RIHZCoCkJa9QKlvl3/vKz2usCmYYjs7ymJR/2Nnsqe+Hjt5nw=="],
+    "@esbuild/netbsd-arm64": ["@esbuild/netbsd-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/netbsd-arm64/-/netbsd-arm64-0.28.2.tgz", { "os": "none", "cpu": "arm64" }, "sha512-sSATRjPeDBg3pdgHoQfoYBob11Kk1FGa9lui5RIHZCoCkJa9QKlvl3/vKz2usCmYYjs7ymJR/2Nnsqe+Hjt5nw=="],
 
-    "@esbuild/netbsd-x64": ["@esbuild/netbsd-x64@0.28.2", "", { "os": "none", "cpu": "x64" }, "sha512-lqnzCV+mM0gIADaKihiCg6ifgfU2L3h5E33rNQBN1Y4MaVGnzryzmvvf7UHxprpQdE8hpqLolJ9Rl+SkIRDpyw=="],
+    "@esbuild/netbsd-x64": ["@esbuild/netbsd-x64@0.28.2", "https://registry.npmjs.com/@esbuild/netbsd-x64/-/netbsd-x64-0.28.2.tgz", { "os": "none", "cpu": "x64" }, "sha512-lqnzCV+mM0gIADaKihiCg6ifgfU2L3h5E33rNQBN1Y4MaVGnzryzmvvf7UHxprpQdE8hpqLolJ9Rl+SkIRDpyw=="],
 
-    "@esbuild/openbsd-arm64": ["@esbuild/openbsd-arm64@0.28.2", "", { "os": "openbsd", "cpu": "arm64" }, "sha512-AL2qJILH7lNjrDmCQDvdxMfAUIv8KMNZOvrwAQ8i8//ntL9FflhOyMJ8OZSMBb8/AWXe3/5v5S20y3zCoZWKoQ=="],
+    "@esbuild/openbsd-arm64": ["@esbuild/openbsd-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/openbsd-arm64/-/openbsd-arm64-0.28.2.tgz", { "os": "openbsd", "cpu": "arm64" }, "sha512-AL2qJILH7lNjrDmCQDvdxMfAUIv8KMNZOvrwAQ8i8//ntL9FflhOyMJ8OZSMBb8/AWXe3/5v5S20y3zCoZWKoQ=="],
 
-    "@esbuild/openbsd-x64": ["@esbuild/openbsd-x64@0.28.2", "", { "os": "openbsd", "cpu": "x64" }, "sha512-QtiuPytchRyC4rwUKhexJdQKvDuZ6hWloi3igqPQNUJCS1/v9EiO3UTOXR6A3FoMo4fnAKbWJdqaIwhOzh8qEw=="],
+    "@esbuild/openbsd-x64": ["@esbuild/openbsd-x64@0.28.2", "https://registry.npmjs.com/@esbuild/openbsd-x64/-/openbsd-x64-0.28.2.tgz", { "os": "openbsd", "cpu": "x64" }, "sha512-QtiuPytchRyC4rwUKhexJdQKvDuZ6hWloi3igqPQNUJCS1/v9EiO3UTOXR6A3FoMo4fnAKbWJdqaIwhOzh8qEw=="],
 
-    "@esbuild/openharmony-arm64": ["@esbuild/openharmony-arm64@0.28.2", "", { "os": "none", "cpu": "arm64" }, "sha512-WkhYDmpTjLvGlScA1rwjRUmhl4k8oXR3cIbtqWmELgU/dFeHHlEllxDvdWcNJV9rbzCexB5vz8gtNewWLgCT7Q=="],
+    "@esbuild/openharmony-arm64": ["@esbuild/openharmony-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/openharmony-arm64/-/openharmony-arm64-0.28.2.tgz", { "os": "none", "cpu": "arm64" }, "sha512-WkhYDmpTjLvGlScA1rwjRUmhl4k8oXR3cIbtqWmELgU/dFeHHlEllxDvdWcNJV9rbzCexB5vz8gtNewWLgCT7Q=="],
 
-    "@esbuild/sunos-x64": ["@esbuild/sunos-x64@0.28.2", "", { "os": "sunos", "cpu": "x64" }, "sha512-GPMSkTOtMnv2U2F8gxe4Io6qmVs+YKyp832Etqqxr0hFngmXQ3rzwytelm3GIn7T4VviRUlf3sOgBOiTdvaf7g=="],
+    "@esbuild/sunos-x64": ["@esbuild/sunos-x64@0.28.2", "https://registry.npmjs.com/@esbuild/sunos-x64/-/sunos-x64-0.28.2.tgz", { "os": "sunos", "cpu": "x64" }, "sha512-GPMSkTOtMnv2U2F8gxe4Io6qmVs+YKyp832Etqqxr0hFngmXQ3rzwytelm3GIn7T4VviRUlf3sOgBOiTdvaf7g=="],
 
-    "@esbuild/win32-arm64": ["@esbuild/win32-arm64@0.28.2", "", { "os": "win32", "cpu": "arm64" }, "sha512-PIhhEkE9uPBleRBrQEJpUn7MBnibZzbGzYWPmY3x+YoVg/95zbjB4CxPPOQ8l5tYYM4mMaCthF8/1DIfBQQyWQ=="],
+    "@esbuild/win32-arm64": ["@esbuild/win32-arm64@0.28.2", "https://registry.npmjs.com/@esbuild/win32-arm64/-/win32-arm64-0.28.2.tgz", { "os": "win32", "cpu": "arm64" }, "sha512-PIhhEkE9uPBleRBrQEJpUn7MBnibZzbGzYWPmY3x+YoVg/95zbjB4CxPPOQ8l5tYYM4mMaCthF8/1DIfBQQyWQ=="],
 
-    "@esbuild/win32-ia32": ["@esbuild/win32-ia32@0.28.2", "", { "os": "win32", "cpu": "ia32" }, "sha512-YmJbfTlvU7Sdn9BB+4PRES4oB6pxgS37MAONj+hBr/cpXS1aBPKXxNnDbu+QCWPj0o9dgyxeq79g6c5P8KeuYA=="],
+    "@esbuild/win32-ia32": ["@esbuild/win32-ia32@0.28.2", "https://registry.npmjs.com/@esbuild/win32-ia32/-/win32-ia32-0.28.2.tgz", { "os": "win32", "cpu": "ia32" }, "sha512-YmJbfTlvU7Sdn9BB+4PRES4oB6pxgS37MAONj+hBr/cpXS1aBPKXxNnDbu+QCWPj0o9dgyxeq79g6c5P8KeuYA=="],
 
-    "@esbuild/win32-x64": ["@esbuild/win32-x64@0.28.2", "", { "os": "win32", "cpu": "x64" }, "sha512-5ebpxr3nWMzrL/rnUI755Jkuee0bHL/Gq0WTF9lvcpv73wAp5eu8MfBUgWK9bhWvZjj7yX8etf/8tI8Ney695g=="],
+    "@esbuild/win32-x64": ["@esbuild/win32-x64@0.28.2", "https://registry.npmjs.com/@esbuild/win32-x64/-/win32-x64-0.28.2.tgz", { "os": "win32", "cpu": "x64" }, "sha512-5ebpxr3nWMzrL/rnUI755Jkuee0bHL/Gq0WTF9lvcpv73wAp5eu8MfBUgWK9bhWvZjj7yX8etf/8tI8Ney695g=="],
 
     "@iot/server": ["@iot/server@workspace:server"],
 
@@ -108,182 +112,200 @@
 
     "@iot/web": ["@iot/web@workspace:web"],
 
-    "@jridgewell/sourcemap-codec": ["@jridgewell/sourcemap-codec@1.6.0", "", {}, "sha512-T7jf+5zgsZHwNJ4lvQ7/aezbyk0nNX+zJVWpmHA7VYsEx7a7qr5Rg5IbtJFqkgze5Y2sruq1RUY8Q837Od7iFw=="],
+    "@jridgewell/sourcemap-codec": ["@jridgewell/sourcemap-codec@1.6.0", "https://registry.npmjs.com/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.6.0.tgz", {}, "sha512-T7jf+5zgsZHwNJ4lvQ7/aezbyk0nNX+zJVWpmHA7VYsEx7a7qr5Rg5IbtJFqkgze5Y2sruq1RUY8Q837Od7iFw=="],
 
-    "@juggle/resize-observer": ["@juggle/resize-observer@3.4.0", "", {}, "sha512-dfLbk+PwWvFzSxwk3n5ySL0hfBog779o8h68wK/7/APo/7cgyWp5jcXockbxdk5kFRkbeXWm4Fbi9FrdN381sA=="],
+    "@juggle/resize-observer": ["@juggle/resize-observer@3.4.0", "https://registry.npmjs.com/@juggle/resize-observer/-/resize-observer-3.4.0.tgz", {}, "sha512-dfLbk+PwWvFzSxwk3n5ySL0hfBog779o8h68wK/7/APo/7cgyWp5jcXockbxdk5kFRkbeXWm4Fbi9FrdN381sA=="],
 
-    "@napi-rs/lzma-linux-x64-gnu": ["@napi-rs/lzma-linux-x64-gnu@1.5.1", "", { "os": "linux", "cpu": "x64" }, "sha512-oTXEIha4SsuXdTA4Iyskj0kpdx2yVXdhd75c2v3xGrHFfVMsbhTPZU/nMPL4sWKo4pBHm3aucLaqGlF696dTyQ=="],
+    "@kurkle/color": ["@kurkle/color@0.3.4", "", {}, "sha512-M5UknZPHRu3DEDWoipU6sE8PdkZ6Z/S+v4dD+Ke8IaNlpdSQah50lz1KtcFBa2vsdOnwbbnxJwVM4wty6udA5w=="],
 
-    "@rolldown/pluginutils": ["@rolldown/pluginutils@1.0.1", "", {}, "sha512-2j9bGt5Jh8hj+vPtgzPtl72j0yRxHAyumoo6TNfAjsLB04UtpSvPbPcDcBMxz7n+9CYB0c1GxQFxYRg2jimqGw=="],
+    "@napi-rs/lzma-linux-x64-gnu": ["@napi-rs/lzma-linux-x64-gnu@1.5.1", "https://registry.npmjs.com/@napi-rs/lzma-linux-x64-gnu/-/lzma-linux-x64-gnu-1.5.1.tgz", { "os": "linux", "cpu": "x64" }, "sha512-oTXEIha4SsuXdTA4Iyskj0kpdx2yVXdhd75c2v3xGrHFfVMsbhTPZU/nMPL4sWKo4pBHm3aucLaqGlF696dTyQ=="],
 
-    "@rollup/rollup-android-arm-eabi": ["@rollup/rollup-android-arm-eabi@4.64.12", "", { "os": "android", "cpu": "arm" }, "sha512-Z8lz+5UOiCJLonjeqwJlhUtHA/Sr6R1AidkccQxdWF0nigNzP81aLoU+udgOaGfL5s1uzFXzcux/pCwGAMu0lw=="],
+    "@rolldown/pluginutils": ["@rolldown/pluginutils@1.0.1", "https://registry.npmjs.com/@rolldown/pluginutils/-/pluginutils-1.0.1.tgz", {}, "sha512-2j9bGt5Jh8hj+vPtgzPtl72j0yRxHAyumoo6TNfAjsLB04UtpSvPbPcDcBMxz7n+9CYB0c1GxQFxYRg2jimqGw=="],
 
-    "@rollup/rollup-android-arm64": ["@rollup/rollup-android-arm64@4.64.12", "", { "os": "android", "cpu": "arm64" }, "sha512-+tKxNa2psFmiTb0KfXlXs4Yj7vkEhzAvZ0DrQ5+0gWHQJM10jSleQ3l1FIVm5uvD53YM8lHfM4mgCLDDN9f1Gg=="],
+    "@rollup/rollup-android-arm-eabi": ["@rollup/rollup-android-arm-eabi@4.64.12", "https://registry.npmjs.com/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.64.12.tgz", { "os": "android", "cpu": "arm" }, "sha512-Z8lz+5UOiCJLonjeqwJlhUtHA/Sr6R1AidkccQxdWF0nigNzP81aLoU+udgOaGfL5s1uzFXzcux/pCwGAMu0lw=="],
 
-    "@rollup/rollup-darwin-arm64": ["@rollup/rollup-darwin-arm64@4.64.12", "", { "os": "darwin", "cpu": "arm64" }, "sha512-iiripdfvyRBugV55/Dk7GplNXQtN/PG85OcKeveU1z2UkTg0MofbBF1qk//qgPWiqJbVvQcXAVCfE56oDGO4EQ=="],
+    "@rollup/rollup-android-arm64": ["@rollup/rollup-android-arm64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.64.12.tgz", { "os": "android", "cpu": "arm64" }, "sha512-+tKxNa2psFmiTb0KfXlXs4Yj7vkEhzAvZ0DrQ5+0gWHQJM10jSleQ3l1FIVm5uvD53YM8lHfM4mgCLDDN9f1Gg=="],
 
-    "@rollup/rollup-darwin-x64": ["@rollup/rollup-darwin-x64@4.64.12", "", { "os": "darwin", "cpu": "x64" }, "sha512-BmATib8swSMAagWNIfDZMnb+k34RXR4bbGOUfZgK8lLlniuMyVoSDDXCOGkdhtUmBXL4aygDh7bhjQ+TmhTvIw=="],
+    "@rollup/rollup-darwin-arm64": ["@rollup/rollup-darwin-arm64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.64.12.tgz", { "os": "darwin", "cpu": "arm64" }, "sha512-iiripdfvyRBugV55/Dk7GplNXQtN/PG85OcKeveU1z2UkTg0MofbBF1qk//qgPWiqJbVvQcXAVCfE56oDGO4EQ=="],
 
-    "@rollup/rollup-freebsd-arm64": ["@rollup/rollup-freebsd-arm64@4.64.12", "", { "os": "freebsd", "cpu": "arm64" }, "sha512-GzrO0CiUq8vcAI/hYJuIcp6wNm3T3YhOpumYtf9Z3Fz+cfN1VESCVfy7EPcM3/m2K8l+Gn2U+4XtNZjwhUXctQ=="],
+    "@rollup/rollup-darwin-x64": ["@rollup/rollup-darwin-x64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.64.12.tgz", { "os": "darwin", "cpu": "x64" }, "sha512-BmATib8swSMAagWNIfDZMnb+k34RXR4bbGOUfZgK8lLlniuMyVoSDDXCOGkdhtUmBXL4aygDh7bhjQ+TmhTvIw=="],
 
-    "@rollup/rollup-freebsd-x64": ["@rollup/rollup-freebsd-x64@4.64.12", "", { "os": "freebsd", "cpu": "x64" }, "sha512-Dpta6gigm4o6SYioXtTkZBlGLA/Sl6OpzgLqY+51uafJE2blPejAtR1w82CVLPN+F9cvo1+/em92x/zcOgY0uQ=="],
+    "@rollup/rollup-freebsd-arm64": ["@rollup/rollup-freebsd-arm64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.64.12.tgz", { "os": "freebsd", "cpu": "arm64" }, "sha512-GzrO0CiUq8vcAI/hYJuIcp6wNm3T3YhOpumYtf9Z3Fz+cfN1VESCVfy7EPcM3/m2K8l+Gn2U+4XtNZjwhUXctQ=="],
 
-    "@rollup/rollup-linux-arm-gnueabihf": ["@rollup/rollup-linux-arm-gnueabihf@4.64.12", "", { "os": "linux", "cpu": "arm" }, "sha512-YpeDwQ5uFaogRvytNC8RK0keDO65kI5wNEhGSs+4GiJc3KHhxj4j5cnQh2nCu9ybJj6RP0/ycB6bkN0yFJ9I+w=="],
+    "@rollup/rollup-freebsd-x64": ["@rollup/rollup-freebsd-x64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.64.12.tgz", { "os": "freebsd", "cpu": "x64" }, "sha512-Dpta6gigm4o6SYioXtTkZBlGLA/Sl6OpzgLqY+51uafJE2blPejAtR1w82CVLPN+F9cvo1+/em92x/zcOgY0uQ=="],
 
-    "@rollup/rollup-linux-arm-musleabihf": ["@rollup/rollup-linux-arm-musleabihf@4.64.12", "", { "os": "linux", "cpu": "arm" }, "sha512-LQrB3/sImIr1ycrlEyaApOLH1rAy8JV4/dH4eoK817aWATdcs4fESXz53/w72NwDnwPM5zEUpoL7socH4ZDnwA=="],
+    "@rollup/rollup-linux-arm-gnueabihf": ["@rollup/rollup-linux-arm-gnueabihf@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.64.12.tgz", { "os": "linux", "cpu": "arm" }, "sha512-YpeDwQ5uFaogRvytNC8RK0keDO65kI5wNEhGSs+4GiJc3KHhxj4j5cnQh2nCu9ybJj6RP0/ycB6bkN0yFJ9I+w=="],
 
-    "@rollup/rollup-linux-arm64-gnu": ["@rollup/rollup-linux-arm64-gnu@4.64.12", "", { "os": "linux", "cpu": "arm64" }, "sha512-iAF2iYu9S4SBfNsb4k0ewNBjO83WxHEltIuKQBGMzEKFgrYfmJn+gatBDXR2t/0zJN0UW0kzR4rfvQ1UHzkZ1A=="],
+    "@rollup/rollup-linux-arm-musleabihf": ["@rollup/rollup-linux-arm-musleabihf@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.64.12.tgz", { "os": "linux", "cpu": "arm" }, "sha512-LQrB3/sImIr1ycrlEyaApOLH1rAy8JV4/dH4eoK817aWATdcs4fESXz53/w72NwDnwPM5zEUpoL7socH4ZDnwA=="],
 
-    "@rollup/rollup-linux-arm64-musl": ["@rollup/rollup-linux-arm64-musl@4.64.12", "", { "os": "linux", "cpu": "arm64" }, "sha512-0MQdRtdbirJCXPIVeW/hd/LXLR8Qz96pc+2EBptuuV5q/zSGOzND7SZt8gBTE58NC9cUG/8UxcUXQiKRZ2WzzA=="],
+    "@rollup/rollup-linux-arm64-gnu": ["@rollup/rollup-linux-arm64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.64.12.tgz", { "os": "linux", "cpu": "arm64" }, "sha512-iAF2iYu9S4SBfNsb4k0ewNBjO83WxHEltIuKQBGMzEKFgrYfmJn+gatBDXR2t/0zJN0UW0kzR4rfvQ1UHzkZ1A=="],
 
-    "@rollup/rollup-linux-loong64-gnu": ["@rollup/rollup-linux-loong64-gnu@4.64.12", "", { "os": "linux", "cpu": "none" }, "sha512-yGDEwn0AGnrY/KCz2oY8R9KKNiQnTcwNuCWXeSXF0VLxXzlqoCgaS5QHsf1lbQvKWwPuN2Czkjk1wXRCBONTOQ=="],
+    "@rollup/rollup-linux-arm64-musl": ["@rollup/rollup-linux-arm64-musl@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.64.12.tgz", { "os": "linux", "cpu": "arm64" }, "sha512-0MQdRtdbirJCXPIVeW/hd/LXLR8Qz96pc+2EBptuuV5q/zSGOzND7SZt8gBTE58NC9cUG/8UxcUXQiKRZ2WzzA=="],
 
-    "@rollup/rollup-linux-loong64-musl": ["@rollup/rollup-linux-loong64-musl@4.64.12", "", { "os": "linux", "cpu": "none" }, "sha512-AjlbD0efZEhHaJ3bsNjxSFDoguNq6VZvC+FKGJGBCA+ZN7BrZq2TuuSWFa6AI8IpOeuvhp2LoYcP7jiZwmtU0Q=="],
+    "@rollup/rollup-linux-loong64-gnu": ["@rollup/rollup-linux-loong64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.64.12.tgz", { "os": "linux", "cpu": "none" }, "sha512-yGDEwn0AGnrY/KCz2oY8R9KKNiQnTcwNuCWXeSXF0VLxXzlqoCgaS5QHsf1lbQvKWwPuN2Czkjk1wXRCBONTOQ=="],
 
-    "@rollup/rollup-linux-ppc64-gnu": ["@rollup/rollup-linux-ppc64-gnu@4.64.12", "", { "os": "linux", "cpu": "ppc64" }, "sha512-sDW0CiPoUCEEUV25uBG5sJ2gKe75DJqLpj91m1eK1vKffywyY7v4i6q1450ZuR6QW4NArXg7JpbMGgKU8di3HQ=="],
+    "@rollup/rollup-linux-loong64-musl": ["@rollup/rollup-linux-loong64-musl@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-loong64-musl/-/rollup-linux-loong64-musl-4.64.12.tgz", { "os": "linux", "cpu": "none" }, "sha512-AjlbD0efZEhHaJ3bsNjxSFDoguNq6VZvC+FKGJGBCA+ZN7BrZq2TuuSWFa6AI8IpOeuvhp2LoYcP7jiZwmtU0Q=="],
 
-    "@rollup/rollup-linux-ppc64-musl": ["@rollup/rollup-linux-ppc64-musl@4.64.12", "", { "os": "linux", "cpu": "ppc64" }, "sha512-VTQYUhMjl8kv999VuYqScgv7P9cR9KuxI/6bkUsEa3bsswqG0+otFjuLZmJ1U+ffEP4IAz0jxOeV0DX6NRBhjg=="],
+    "@rollup/rollup-linux-ppc64-gnu": ["@rollup/rollup-linux-ppc64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.64.12.tgz", { "os": "linux", "cpu": "ppc64" }, "sha512-sDW0CiPoUCEEUV25uBG5sJ2gKe75DJqLpj91m1eK1vKffywyY7v4i6q1450ZuR6QW4NArXg7JpbMGgKU8di3HQ=="],
 
-    "@rollup/rollup-linux-riscv64-gnu": ["@rollup/rollup-linux-riscv64-gnu@4.64.12", "", { "os": "linux", "cpu": "none" }, "sha512-ppsKwpSjNrzJ8hge3Z3uiCcoRgAAQk2tU7auy3MFF348ffWRldFPnWIT/a/enK7huijlTfnwn4DYpDoapEb45A=="],
+    "@rollup/rollup-linux-ppc64-musl": ["@rollup/rollup-linux-ppc64-musl@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-ppc64-musl/-/rollup-linux-ppc64-musl-4.64.12.tgz", { "os": "linux", "cpu": "ppc64" }, "sha512-VTQYUhMjl8kv999VuYqScgv7P9cR9KuxI/6bkUsEa3bsswqG0+otFjuLZmJ1U+ffEP4IAz0jxOeV0DX6NRBhjg=="],
 
-    "@rollup/rollup-linux-riscv64-musl": ["@rollup/rollup-linux-riscv64-musl@4.64.12", "", { "os": "linux", "cpu": "none" }, "sha512-Gc3cVRC1trFH+GFWWTsJz6YuD4u75fzr/q99jqQGimonN/zvN6Wecck5WGzllOHj+XYXHcq0Ibor0tanGjfI6A=="],
+    "@rollup/rollup-linux-riscv64-gnu": ["@rollup/rollup-linux-riscv64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.64.12.tgz", { "os": "linux", "cpu": "none" }, "sha512-ppsKwpSjNrzJ8hge3Z3uiCcoRgAAQk2tU7auy3MFF348ffWRldFPnWIT/a/enK7huijlTfnwn4DYpDoapEb45A=="],
 
-    "@rollup/rollup-linux-s390x-gnu": ["@rollup/rollup-linux-s390x-gnu@4.64.12", "", { "os": "linux", "cpu": "s390x" }, "sha512-pjmDTFStvwFE3shTeUDvSDiSp8/qAf5bQXejcEUDDavWz4jEhTIpCdpS06G0PEwSCSNK0Lngjz2v9l4hk3Z74A=="],
+    "@rollup/rollup-linux-riscv64-musl": ["@rollup/rollup-linux-riscv64-musl@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.64.12.tgz", { "os": "linux", "cpu": "none" }, "sha512-Gc3cVRC1trFH+GFWWTsJz6YuD4u75fzr/q99jqQGimonN/zvN6Wecck5WGzllOHj+XYXHcq0Ibor0tanGjfI6A=="],
 
-    "@rollup/rollup-linux-x64-gnu": ["@rollup/rollup-linux-x64-gnu@4.64.12", "", { "os": "linux", "cpu": "x64" }, "sha512-mkbjxPqpR91u1JD7xY4aLZhr/Mqka4/RqGcG4WNGgN/lC1o7TzyCyqJoSJXp9qVVxMwpJGFlEF1VlERb+Ghw1Q=="],
+    "@rollup/rollup-linux-s390x-gnu": ["@rollup/rollup-linux-s390x-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.64.12.tgz", { "os": "linux", "cpu": "s390x" }, "sha512-pjmDTFStvwFE3shTeUDvSDiSp8/qAf5bQXejcEUDDavWz4jEhTIpCdpS06G0PEwSCSNK0Lngjz2v9l4hk3Z74A=="],
 
-    "@rollup/rollup-linux-x64-musl": ["@rollup/rollup-linux-x64-musl@4.64.12", "", { "os": "linux", "cpu": "x64" }, "sha512-vIeut2LkuVc3gcsawLJPahNAzvzBcFRhu2O+yVb//BuQKz7PIItMF0piXRbN/lIDO3d68TSDd368Vg6YwgTybw=="],
+    "@rollup/rollup-linux-x64-gnu": ["@rollup/rollup-linux-x64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.64.12.tgz", { "os": "linux", "cpu": "x64" }, "sha512-mkbjxPqpR91u1JD7xY4aLZhr/Mqka4/RqGcG4WNGgN/lC1o7TzyCyqJoSJXp9qVVxMwpJGFlEF1VlERb+Ghw1Q=="],
 
-    "@rollup/rollup-openbsd-x64": ["@rollup/rollup-openbsd-x64@4.64.12", "", { "os": "openbsd", "cpu": "x64" }, "sha512-3Sx+D3r9oPkTdNUcPrIRM2Am+vzEV6VGWoImHG4ZVK2jJeOW+eDjLeTm6nvu/z/m0fiX2YmGLXIypblc336MXg=="],
+    "@rollup/rollup-linux-x64-musl": ["@rollup/rollup-linux-x64-musl@4.64.12", "https://registry.npmjs.com/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.64.12.tgz", { "os": "linux", "cpu": "x64" }, "sha512-vIeut2LkuVc3gcsawLJPahNAzvzBcFRhu2O+yVb//BuQKz7PIItMF0piXRbN/lIDO3d68TSDd368Vg6YwgTybw=="],
 
-    "@rollup/rollup-openharmony-arm64": ["@rollup/rollup-openharmony-arm64@4.64.12", "", { "os": "none", "cpu": "arm64" }, "sha512-Nn2xh0teFnl71EiiUrKvECWcdGXtWF8q0uGclYwXGVw6QClGAcME0/bJSGdK+xIvd6MLEKYmjkTUvCBV+7m5Kw=="],
+    "@rollup/rollup-openbsd-x64": ["@rollup/rollup-openbsd-x64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-openbsd-x64/-/rollup-openbsd-x64-4.64.12.tgz", { "os": "openbsd", "cpu": "x64" }, "sha512-3Sx+D3r9oPkTdNUcPrIRM2Am+vzEV6VGWoImHG4ZVK2jJeOW+eDjLeTm6nvu/z/m0fiX2YmGLXIypblc336MXg=="],
 
-    "@rollup/rollup-win32-arm64-msvc": ["@rollup/rollup-win32-arm64-msvc@4.64.12", "", { "os": "win32", "cpu": "arm64" }, "sha512-n1/0H9TS+kBa4xp6n9aV7yiynBNfmerjkj2nAMIfY0ZHv1zShWRXnsAuAPAH0sfEK4ZSMK+z24q2RjAPFLCN1w=="],
+    "@rollup/rollup-openharmony-arm64": ["@rollup/rollup-openharmony-arm64@4.64.12", "https://registry.npmjs.com/@rollup/rollup-openharmony-arm64/-/rollup-openharmony-arm64-4.64.12.tgz", { "os": "none", "cpu": "arm64" }, "sha512-Nn2xh0teFnl71EiiUrKvECWcdGXtWF8q0uGclYwXGVw6QClGAcME0/bJSGdK+xIvd6MLEKYmjkTUvCBV+7m5Kw=="],
 
-    "@rollup/rollup-win32-ia32-msvc": ["@rollup/rollup-win32-ia32-msvc@4.64.12", "", { "os": "win32", "cpu": "ia32" }, "sha512-AdlDbQpsLfGlsHr1NfLZFtdnvxCKNp9TwlYVYExs8JJLWjLafUQEKJk0r9zUbmU57mw9nglMEvzqPHuLWYmaKw=="],
+    "@rollup/rollup-win32-arm64-msvc": ["@rollup/rollup-win32-arm64-msvc@4.64.12", "https://registry.npmjs.com/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.64.12.tgz", { "os": "win32", "cpu": "arm64" }, "sha512-n1/0H9TS+kBa4xp6n9aV7yiynBNfmerjkj2nAMIfY0ZHv1zShWRXnsAuAPAH0sfEK4ZSMK+z24q2RjAPFLCN1w=="],
 
-    "@rollup/rollup-win32-x64-gnu": ["@rollup/rollup-win32-x64-gnu@4.64.12", "", { "os": "win32", "cpu": "x64" }, "sha512-u5SSUJBHod51UamjkigSr+JPre6xMy5vaWTTV2K0SnFG4RuKyYpf66dTSLFKX2cwaldpwyBurXPUCxq8riQMEg=="],
+    "@rollup/rollup-win32-ia32-msvc": ["@rollup/rollup-win32-ia32-msvc@4.64.12", "https://registry.npmjs.com/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.64.12.tgz", { "os": "win32", "cpu": "ia32" }, "sha512-AdlDbQpsLfGlsHr1NfLZFtdnvxCKNp9TwlYVYExs8JJLWjLafUQEKJk0r9zUbmU57mw9nglMEvzqPHuLWYmaKw=="],
 
-    "@rollup/rollup-win32-x64-msvc": ["@rollup/rollup-win32-x64-msvc@4.64.12", "", { "os": "win32", "cpu": "x64" }, "sha512-j5rXD4R/4DM5+V991AA9xOnG2Rwu2g3p5TPgu1Eu7apju0NUrLl+Bn/KpWc6wYJtlXqzwz1r+LNV1JeBU4VGvw=="],
+    "@rollup/rollup-win32-x64-gnu": ["@rollup/rollup-win32-x64-gnu@4.64.12", "https://registry.npmjs.com/@rollup/rollup-win32-x64-gnu/-/rollup-win32-x64-gnu-4.64.12.tgz", { "os": "win32", "cpu": "x64" }, "sha512-u5SSUJBHod51UamjkigSr+JPre6xMy5vaWTTV2K0SnFG4RuKyYpf66dTSLFKX2cwaldpwyBurXPUCxq8riQMEg=="],
 
-    "@types/bun": ["@types/bun@1.4.3", "", { "dependencies": { "bun-types": "1.4.3" } }, "sha512-N67Pqy8JXbAY/j0tNraS3V5mubGvc6rrrNDmDCtZLlFzccbUJPDb0tvgUBC5q4m8ybkP93Jcn1QB+RYQ6PvBhw=="],
+    "@rollup/rollup-win32-x64-msvc": ["@rollup/rollup-win32-x64-msvc@4.64.12", "https://registry.npmjs.com/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.64.12.tgz", { "os": "win32", "cpu": "x64" }, "sha512-j5rXD4R/4DM5+V991AA9xOnG2Rwu2g3p5TPgu1Eu7apju0NUrLl+Bn/KpWc6wYJtlXqzwz1r+LNV1JeBU4VGvw=="],
 
-    "@types/estree": ["@types/estree@1.0.9", "", {}, "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg=="],
+    "@types/bun": ["@types/bun@1.4.3", "https://registry.npmjs.com/@types/bun/-/bun-1.4.3.tgz", { "dependencies": { "bun-types": "1.4.3" } }, "sha512-N67Pqy8JXbAY/j0tNraS3V5mubGvc6rrrNDmDCtZLlFzccbUJPDb0tvgUBC5q4m8ybkP93Jcn1QB+RYQ6PvBhw=="],
 
-    "@types/lodash": ["@types/lodash@4.17.26", "", {}, "sha512-48NWfiY6oNcKOh47Z4h+sIvwcQR91h6KPhaYKgeMIrkT2jV82Gy90SErj60vW8jQbeMSOSbhIv3bZ7JoqPPVhA=="],
+    "@types/estree": ["@types/estree@1.0.9", "https://registry.npmjs.com/@types/estree/-/estree-1.0.9.tgz", {}, "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg=="],
 
-    "@types/lodash-es": ["@types/lodash-es@4.17.12", "", { "dependencies": { "@types/lodash": "*" } }, "sha512-0NgftHUcV4v34VhXm8QBSftKVXtbkBG3ViCjs6+eJ5a6y6Mi/jiFGPc1sC7QK+9BFhWrURE3EOggmWaSxL9OzQ=="],
+    "@types/lodash": ["@types/lodash@4.17.26", "https://registry.npmjs.com/@types/lodash/-/lodash-4.17.26.tgz", {}, "sha512-48NWfiY6oNcKOh47Z4h+sIvwcQR91h6KPhaYKgeMIrkT2jV82Gy90SErj60vW8jQbeMSOSbhIv3bZ7JoqPPVhA=="],
 
-    "@types/node": ["@types/node@26.6.5", "", { "dependencies": { "undici-types": "~8.9.0" } }, "sha512-uMzsv9stDdofIZBx4UGh4Z9ZgXnGC9seRDscilBcTHAeOFk67MZg/k9bWVfO+bk4qZmG+l52hRnLwUiH2LnJTg=="],
+    "@types/lodash-es": ["@types/lodash-es@4.17.12", "https://registry.npmjs.com/@types/lodash-es/-/lodash-es-4.17.12.tgz", { "dependencies": { "@types/lodash": "*" } }, "sha512-0NgftHUcV4v34VhXm8QBSftKVXtbkBG3ViCjs6+eJ5a6y6Mi/jiFGPc1sC7QK+9BFhWrURE3EOggmWaSxL9OzQ=="],
 
-    "@vitejs/plugin-vue": ["@vitejs/plugin-vue@6.0.10", "", { "dependencies": { "@rolldown/pluginutils": "^1.0.1" }, "peerDependencies": { "vite": "^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0", "vue": "^3.2.25 || ^3.6.0-rc.10" } }, "sha512-b80aUQh3n+qEzzZm5oQp3rT2QImeCx58K6eFl/RkJ3d65KW0kTuv5lNsLRVAjbW9YRUpo/wzmvzMgV34bTAItA=="],
+    "@types/node": ["@types/node@26.6.5", "https://registry.npmjs.com/@types/node/-/node-26.6.5.tgz", { "dependencies": { "undici-types": "~8.9.0" } }, "sha512-uMzsv9stDdofIZBx4UGh4Z9ZgXnGC9seRDscilBcTHAeOFk67MZg/k9bWVfO+bk4qZmG+l52hRnLwUiH2LnJTg=="],
 
-    "@volar/language-core": ["@volar/language-core@2.4.28", "", { "dependencies": { "@volar/source-map": "2.4.28" } }, "sha512-w4qhIJ8ZSitgLAkVay6AbcnC7gP3glYM3fYwKV3srj8m494E3xtrCv6E+bWviiK/8hs6e6t1ij1s2Endql7vzQ=="],
+    "@types/trusted-types": ["@types/trusted-types@2.0.7", "https://registry.npmjs.com/@types/trusted-types/-/trusted-types-2.0.7.tgz", {}, "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw=="],
 
-    "@volar/source-map": ["@volar/source-map@2.4.28", "", {}, "sha512-yX2BDBqJkRXfKw8my8VarTyjv48QwxdJtvRgUpNE5erCsgEUdI2DsLbpa+rOQVAJYshY99szEcRDmyHbF10ggQ=="],
+    "@vitejs/plugin-vue": ["@vitejs/plugin-vue@6.0.10", "https://registry.npmjs.com/@vitejs/plugin-vue/-/plugin-vue-6.0.10.tgz", { "dependencies": { "@rolldown/pluginutils": "^1.0.1" }, "peerDependencies": { "vite": "^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0", "vue": "^3.2.25 || ^3.6.0-rc.10" } }, "sha512-b80aUQh3n+qEzzZm5oQp3rT2QImeCx58K6eFl/RkJ3d65KW0kTuv5lNsLRVAjbW9YRUpo/wzmvzMgV34bTAItA=="],
 
-    "@volar/typescript": ["@volar/typescript@2.4.28", "", { "dependencies": { "@volar/language-core": "2.4.28", "path-browserify": "^1.0.1", "vscode-uri": "^3.0.8" } }, "sha512-Ja6yvWrbis2QtN4ClAKreeUZPVYMARDYZl9LMEv1iQ1QdepB6wn0jTRxA9MftYmYa4DQ4k/DaSZpFPUfxl8giw=="],
+    "@volar/language-core": ["@volar/language-core@2.4.28", "https://registry.npmjs.com/@volar/language-core/-/language-core-2.4.28.tgz", { "dependencies": { "@volar/source-map": "2.4.28" } }, "sha512-w4qhIJ8ZSitgLAkVay6AbcnC7gP3glYM3fYwKV3srj8m494E3xtrCv6E+bWviiK/8hs6e6t1ij1s2Endql7vzQ=="],
 
-    "@vue/compiler-core": ["@vue/compiler-core@3.5.44", "", { "dependencies": { "@babel/parser": "^7.29.9", "@vue/shared": "3.5.44", "entities": "^7.0.1", "estree-walker": "^2.0.2", "source-map-js": "^1.2.2" } }, "sha512-k34nCytbK8PQ1gR2mGROYOw6Pnv/mumqIdrZ3x2tbyXZDWm7ViKGLTfdB+DRrWqEQsLgGJvn0WN9jBif5zCTLQ=="],
+    "@volar/source-map": ["@volar/source-map@2.4.28", "https://registry.npmjs.com/@volar/source-map/-/source-map-2.4.28.tgz", {}, "sha512-yX2BDBqJkRXfKw8my8VarTyjv48QwxdJtvRgUpNE5erCsgEUdI2DsLbpa+rOQVAJYshY99szEcRDmyHbF10ggQ=="],
 
-    "@vue/compiler-dom": ["@vue/compiler-dom@3.5.44", "", { "dependencies": { "@vue/compiler-core": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-W5AoBFWdw1lQAKiHowkfgFKFab82oSRT6sGsPfw/q1GRjsy/ZJFLHGhJyBRIFN9APLTUduDH9U2JAiPOIyKuYg=="],
+    "@volar/typescript": ["@volar/typescript@2.4.28", "https://registry.npmjs.com/@volar/typescript/-/typescript-2.4.28.tgz", { "dependencies": { "@volar/language-core": "2.4.28", "path-browserify": "^1.0.1", "vscode-uri": "^3.0.8" } }, "sha512-Ja6yvWrbis2QtN4ClAKreeUZPVYMARDYZl9LMEv1iQ1QdepB6wn0jTRxA9MftYmYa4DQ4k/DaSZpFPUfxl8giw=="],
 
-    "@vue/compiler-sfc": ["@vue/compiler-sfc@3.5.44", "", { "dependencies": { "@babel/parser": "^7.29.9", "@vue/compiler-core": "3.5.44", "@vue/compiler-dom": "3.5.44", "@vue/compiler-ssr": "3.5.44", "@vue/shared": "3.5.44", "estree-walker": "^2.0.2", "magic-string": "^0.30.21", "postcss": "^8.5.29", "source-map-js": "^1.2.2" } }, "sha512-dzHmQ4jXTpdr5FjIQUeykVakN/uzqFbUo9/C5ikBFg3a3PeM6uRxeczx1ZbXBML0/zJstEh3ygYipzR5Z7b2Pw=="],
+    "@vue/compiler-core": ["@vue/compiler-core@3.5.44", "https://registry.npmjs.com/@vue/compiler-core/-/compiler-core-3.5.44.tgz", { "dependencies": { "@babel/parser": "^7.29.9", "@vue/shared": "3.5.44", "entities": "^7.0.1", "estree-walker": "^2.0.2", "source-map-js": "^1.2.2" } }, "sha512-k34nCytbK8PQ1gR2mGROYOw6Pnv/mumqIdrZ3x2tbyXZDWm7ViKGLTfdB+DRrWqEQsLgGJvn0WN9jBif5zCTLQ=="],
 
-    "@vue/compiler-ssr": ["@vue/compiler-ssr@3.5.44", "", { "dependencies": { "@vue/compiler-dom": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-xr5gb1JVHlfXJwSlRz1FeP6uxoazdzHuMTVLE7up+4Vrqxk219CvxLPxD9NXBt47yvZW7+p4DXfyp4O1fkByIA=="],
+    "@vue/compiler-dom": ["@vue/compiler-dom@3.5.44", "https://registry.npmjs.com/@vue/compiler-dom/-/compiler-dom-3.5.44.tgz", { "dependencies": { "@vue/compiler-core": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-W5AoBFWdw1lQAKiHowkfgFKFab82oSRT6sGsPfw/q1GRjsy/ZJFLHGhJyBRIFN9APLTUduDH9U2JAiPOIyKuYg=="],
 
-    "@vue/language-core": ["@vue/language-core@3.3.13", "", { "dependencies": { "@volar/language-core": "2.4.28", "@vue/compiler-dom": "^3.5.0", "@vue/shared": "^3.5.0", "alien-signals": "^3.2.1", "muggle-string": "^0.4.1", "path-browserify": "^1.0.1", "picomatch": "^4.0.4" } }, "sha512-axA0Xemn5LuUKuKWob0/kVq7xQ2mJJM6VqA9Exvt35nM9yRC31goWVve/G/Zb2ZCLsXC8FHYjjfXlnshknSCew=="],
+    "@vue/compiler-sfc": ["@vue/compiler-sfc@3.5.44", "https://registry.npmjs.com/@vue/compiler-sfc/-/compiler-sfc-3.5.44.tgz", { "dependencies": { "@babel/parser": "^7.29.9", "@vue/compiler-core": "3.5.44", "@vue/compiler-dom": "3.5.44", "@vue/compiler-ssr": "3.5.44", "@vue/shared": "3.5.44", "estree-walker": "^2.0.2", "magic-string": "^0.30.21", "postcss": "^8.5.29", "source-map-js": "^1.2.2" } }, "sha512-dzHmQ4jXTpdr5FjIQUeykVakN/uzqFbUo9/C5ikBFg3a3PeM6uRxeczx1ZbXBML0/zJstEh3ygYipzR5Z7b2Pw=="],
 
-    "@vue/reactivity": ["@vue/reactivity@3.5.44", "", { "dependencies": { "@vue/shared": "3.5.44" } }, "sha512-u+QJdKeBBEADkPdevsL+6E12QlYVfBD8Zcw5qjDQKtamI6l14KyqazJMobhCKelhWN5zpyKUiEDoTyHE93cqWw=="],
+    "@vue/compiler-ssr": ["@vue/compiler-ssr@3.5.44", "https://registry.npmjs.com/@vue/compiler-ssr/-/compiler-ssr-3.5.44.tgz", { "dependencies": { "@vue/compiler-dom": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-xr5gb1JVHlfXJwSlRz1FeP6uxoazdzHuMTVLE7up+4Vrqxk219CvxLPxD9NXBt47yvZW7+p4DXfyp4O1fkByIA=="],
 
-    "@vue/runtime-core": ["@vue/runtime-core@3.5.44", "", { "dependencies": { "@vue/reactivity": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-uEa/ndwjhrrhnOfb2p+sZy6zeoamJOISqaLSJGk/8R6nABT1ZldpzcJoPzKj+zHVomVBPcmQYyC2r4LtvDV6CQ=="],
+    "@vue/devtools-api": ["@vue/devtools-api@6.6.4", "https://registry.npmjs.com/@vue/devtools-api/-/devtools-api-6.6.4.tgz", {}, "sha512-sGhTPMuXqZ1rVOk32RylztWkfXTRhuS7vgAKv0zjqk8gbsHkJ7xfFf+jbySxt7tWObEJwyKaHMikV/WGDiQm8g=="],
 
-    "@vue/runtime-dom": ["@vue/runtime-dom@3.5.44", "", { "dependencies": { "@vue/reactivity": "3.5.44", "@vue/runtime-core": "3.5.44", "@vue/shared": "3.5.44", "csstype": "^3.2.3" } }, "sha512-3fc4ARcXVhVBaJ3ujWiNZJARD6pkyRcwG+ZYhMzjKtKUp7MAY0HLwr7r3Smep3Li6ZaWT6ewdmx8XqdaD5oNZg=="],
+    "@vue/language-core": ["@vue/language-core@3.3.13", "https://registry.npmjs.com/@vue/language-core/-/language-core-3.3.13.tgz", { "dependencies": { "@volar/language-core": "2.4.28", "@vue/compiler-dom": "^3.5.0", "@vue/shared": "^3.5.0", "alien-signals": "^3.2.1", "muggle-string": "^0.4.1", "path-browserify": "^1.0.1", "picomatch": "^4.0.4" } }, "sha512-axA0Xemn5LuUKuKWob0/kVq7xQ2mJJM6VqA9Exvt35nM9yRC31goWVve/G/Zb2ZCLsXC8FHYjjfXlnshknSCew=="],
 
-    "@vue/server-renderer": ["@vue/server-renderer@3.5.44", "", { "dependencies": { "@vue/compiler-ssr": "3.5.44", "@vue/runtime-dom": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-R4S1UoH4h5Frrauv8Z5XE5TxV9oBiUSgWIC4TyVK1FK+RocRnOLwFA5Xcmo2011RlgJp+AbZCnw6afrhlgRuUQ=="],
+    "@vue/reactivity": ["@vue/reactivity@3.5.44", "https://registry.npmjs.com/@vue/reactivity/-/reactivity-3.5.44.tgz", { "dependencies": { "@vue/shared": "3.5.44" } }, "sha512-u+QJdKeBBEADkPdevsL+6E12QlYVfBD8Zcw5qjDQKtamI6l14KyqazJMobhCKelhWN5zpyKUiEDoTyHE93cqWw=="],
 
-    "@vue/shared": ["@vue/shared@3.5.44", "", {}, "sha512-H82XLH0DjmSOdbEwO15x3QTo1f5PWEtv237eLpYKc0mqLu+B8hnq16lFWmuBmNurkeiG3wr+oM1FhOll/YVFRg=="],
+    "@vue/runtime-core": ["@vue/runtime-core@3.5.44", "https://registry.npmjs.com/@vue/runtime-core/-/runtime-core-3.5.44.tgz", { "dependencies": { "@vue/reactivity": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-uEa/ndwjhrrhnOfb2p+sZy6zeoamJOISqaLSJGk/8R6nABT1ZldpzcJoPzKj+zHVomVBPcmQYyC2r4LtvDV6CQ=="],
 
-    "alien-signals": ["alien-signals@3.2.1", "", {}, "sha512-I8FjmltrfnDFoZedi5CG8DghVYNhzb/Ijluz7tCSJH0xpd0484Kowhbb1XDYOxfJpU1p5wnM2X54dA+IfGyD1g=="],
+    "@vue/runtime-dom": ["@vue/runtime-dom@3.5.44", "https://registry.npmjs.com/@vue/runtime-dom/-/runtime-dom-3.5.44.tgz", { "dependencies": { "@vue/reactivity": "3.5.44", "@vue/runtime-core": "3.5.44", "@vue/shared": "3.5.44", "csstype": "^3.2.3" } }, "sha512-3fc4ARcXVhVBaJ3ujWiNZJARD6pkyRcwG+ZYhMzjKtKUp7MAY0HLwr7r3Smep3Li6ZaWT6ewdmx8XqdaD5oNZg=="],
 
-    "async-validator": ["async-validator@4.2.5", "", {}, "sha512-7HhHjtERjqlNbZtqNqy2rckN/SpOOlmDliet+lP7k+eKZEjPk3DgyeU9lIXLdeLz0uBbbVp+9Qdow9wJWgwwfg=="],
+    "@vue/server-renderer": ["@vue/server-renderer@3.5.44", "https://registry.npmjs.com/@vue/server-renderer/-/server-renderer-3.5.44.tgz", { "dependencies": { "@vue/compiler-ssr": "3.5.44", "@vue/runtime-dom": "3.5.44", "@vue/shared": "3.5.44" } }, "sha512-R4S1UoH4h5Frrauv8Z5XE5TxV9oBiUSgWIC4TyVK1FK+RocRnOLwFA5Xcmo2011RlgJp+AbZCnw6afrhlgRuUQ=="],
 
-    "bun-types": ["bun-types@1.4.3", "", { "dependencies": { "@types/node": "*", "undici-types": "*" } }, "sha512-tinRJNGOmUN+tEAsn2y2e942n9JHRHR42iUYzDH75NmhJqVBokGSQkkfSFdNWwsANIdrK6ACH9t01M452YyTwg=="],
+    "@vue/shared": ["@vue/shared@3.5.44", "https://registry.npmjs.com/@vue/shared/-/shared-3.5.44.tgz", {}, "sha512-H82XLH0DjmSOdbEwO15x3QTo1f5PWEtv237eLpYKc0mqLu+B8hnq16lFWmuBmNurkeiG3wr+oM1FhOll/YVFRg=="],
 
-    "css-render": ["css-render@0.15.14", "", { "dependencies": { "@emotion/hash": "~0.8.0", "csstype": "~3.0.5" } }, "sha512-9nF4PdUle+5ta4W5SyZdLCCmFd37uVimSjg1evcTqKJCyvCEEj12WKzOSBNak6r4im4J4iYXKH1OWpUV5LBYFg=="],
+    "alien-signals": ["alien-signals@3.2.1", "https://registry.npmjs.com/alien-signals/-/alien-signals-3.2.1.tgz", {}, "sha512-I8FjmltrfnDFoZedi5CG8DghVYNhzb/Ijluz7tCSJH0xpd0484Kowhbb1XDYOxfJpU1p5wnM2X54dA+IfGyD1g=="],
 
-    "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
+    "async-validator": ["async-validator@4.2.5", "https://registry.npmjs.com/async-validator/-/async-validator-4.2.5.tgz", {}, "sha512-7HhHjtERjqlNbZtqNqy2rckN/SpOOlmDliet+lP7k+eKZEjPk3DgyeU9lIXLdeLz0uBbbVp+9Qdow9wJWgwwfg=="],
 
-    "date-fns": ["date-fns@4.4.0", "", {}, "sha512-+1UMbeh68lH1SegH83CGWwpb6OHHbpSgr3+s5Eww5M4CAgswBpoWS0AjTOfEJ33HiYKz1hdj/KTFprzXHmq/6w=="],
+    "bun-types": ["bun-types@1.4.3", "https://registry.npmjs.com/bun-types/-/bun-types-1.4.3.tgz", { "dependencies": { "@types/node": "*", "undici-types": "*" } }, "sha512-tinRJNGOmUN+tEAsn2y2e942n9JHRHR42iUYzDH75NmhJqVBokGSQkkfSFdNWwsANIdrK6ACH9t01M452YyTwg=="],
 
-    "date-fns-tz": ["date-fns-tz@3.2.0", "", { "peerDependencies": { "date-fns": "^3.0.0 || ^4.0.0" } }, "sha512-sg8HqoTEulcbbbVXeg84u5UnlsQa8GS5QXMqjjYIhS4abEVVKIUwe0/l/UhrZdKaL/W5eWZNlbTeEIiOXTcsBQ=="],
+    "chart.js": ["chart.js@4.6.1", "", { "dependencies": { "@kurkle/color": "^0.3.0" } }, "sha512-hJyniucsFmq//EvXYvJ6c6mahPoI3kaxdjVH8awTaJ/fDNWeSqqqArixMJWkWNN6fcYvPU3HneSANFNYtRi61g=="],
 
-    "entities": ["entities@7.0.1", "", {}, "sha512-TWrgLOFUQTH994YUyl1yT4uyavY5nNB5muff+RtWaqNVCAK408b5ZnnbNAUEWLTCpum9w6arT70i1XdQ4UeOPA=="],
+    "css-render": ["css-render@0.15.14", "https://registry.npmjs.com/css-render/-/css-render-0.15.14.tgz", { "dependencies": { "@emotion/hash": "~0.8.0", "csstype": "~3.0.5" } }, "sha512-9nF4PdUle+5ta4W5SyZdLCCmFd37uVimSjg1evcTqKJCyvCEEj12WKzOSBNak6r4im4J4iYXKH1OWpUV5LBYFg=="],
 
-    "esbuild": ["esbuild@0.28.2", "", { "optionalDependencies": { "@esbuild/aix-ppc64": "0.28.2", "@esbuild/android-arm": "0.28.2", "@esbuild/android-arm64": "0.28.2", "@esbuild/android-x64": "0.28.2", "@esbuild/darwin-arm64": "0.28.2", "@esbuild/darwin-x64": "0.28.2", "@esbuild/freebsd-arm64": "0.28.2", "@esbuild/freebsd-x64": "0.28.2", "@esbuild/linux-arm": "0.28.2", "@esbuild/linux-arm64": "0.28.2", "@esbuild/linux-ia32": "0.28.2", "@esbuild/linux-loong64": "0.28.2", "@esbuild/linux-mips64el": "0.28.2", "@esbuild/linux-ppc64": "0.28.2", "@esbuild/linux-riscv64": "0.28.2", "@esbuild/linux-s390x": "0.28.2", "@esbuild/linux-x64": "0.28.2", "@esbuild/netbsd-arm64": "0.28.2", "@esbuild/netbsd-x64": "0.28.2", "@esbuild/openbsd-arm64": "0.28.2", "@esbuild/openbsd-x64": "0.28.2", "@esbuild/openharmony-arm64": "0.28.2", "@esbuild/sunos-x64": "0.28.2", "@esbuild/win32-arm64": "0.28.2", "@esbuild/win32-ia32": "0.28.2", "@esbuild/win32-x64": "0.28.2" }, "bin": { "esbuild": "bin/esbuild" } }, "sha512-HKVLS8dvII+xoKW9kmqxbRKrnWEXfJJr/FZhhJmiqIB0e053QNYFqOBouTMO/k5sID4MvCiUCvv8b9M4h32wIA=="],
+    "csstype": ["csstype@3.2.3", "https://registry.npmjs.com/csstype/-/csstype-3.2.3.tgz", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
 
-    "estree-walker": ["estree-walker@2.0.2", "", {}, "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w=="],
+    "date-fns": ["date-fns@4.4.0", "https://registry.npmjs.com/date-fns/-/date-fns-4.4.0.tgz", {}, "sha512-+1UMbeh68lH1SegH83CGWwpb6OHHbpSgr3+s5Eww5M4CAgswBpoWS0AjTOfEJ33HiYKz1hdj/KTFprzXHmq/6w=="],
 
-    "evtd": ["evtd@0.2.4", "", {}, "sha512-qaeGN5bx63s/AXgQo8gj6fBkxge+OoLddLniox5qtLAEY5HSnuSlISXVPxnSae1dWblvTh4/HoMIB+mbMsvZzw=="],
+    "date-fns-tz": ["date-fns-tz@3.2.0", "https://registry.npmjs.com/date-fns-tz/-/date-fns-tz-3.2.0.tgz", { "peerDependencies": { "date-fns": "^3.0.0 || ^4.0.0" } }, "sha512-sg8HqoTEulcbbbVXeg84u5UnlsQa8GS5QXMqjjYIhS4abEVVKIUwe0/l/UhrZdKaL/W5eWZNlbTeEIiOXTcsBQ=="],
 
-    "fdir": ["fdir@6.5.0", "", { "peerDependencies": { "picomatch": "^3 || ^4" }, "optionalPeers": ["picomatch"] }, "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg=="],
+    "dompurify": ["dompurify@3.4.15", "https://registry.npmjs.com/dompurify/-/dompurify-3.4.15.tgz", { "optionalDependencies": { "@types/trusted-types": "^2.0.7" } }, "sha512-EUBjM+B+lkDE41iE82DDSCfkoPGfXx8IxFxPMjNzm/Uk4xDet77rTN9wqlxlVg71kK7XGuUMv6wUxJUwwv+Xyw=="],
 
-    "fsevents": ["fsevents@2.3.3", "", { "os": "darwin" }, "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw=="],
+    "entities": ["entities@7.0.1", "https://registry.npmjs.com/entities/-/entities-7.0.1.tgz", {}, "sha512-TWrgLOFUQTH994YUyl1yT4uyavY5nNB5muff+RtWaqNVCAK408b5ZnnbNAUEWLTCpum9w6arT70i1XdQ4UeOPA=="],
 
-    "highlight.js": ["highlight.js@11.12.0", "", {}, "sha512-nbfWpyRMcMrPMmDwJB+dhX/eiaPKtc2RB+0QZskqJ3WjRA/FDS0e9hZrx8EC/lbEv8gXy98FcDbNa/dspAaJMg=="],
+    "esbuild": ["esbuild@0.28.2", "https://registry.npmjs.com/esbuild/-/esbuild-0.28.2.tgz", { "optionalDependencies": { "@esbuild/aix-ppc64": "0.28.2", "@esbuild/android-arm": "0.28.2", "@esbuild/android-arm64": "0.28.2", "@esbuild/android-x64": "0.28.2", "@esbuild/darwin-arm64": "0.28.2", "@esbuild/darwin-x64": "0.28.2", "@esbuild/freebsd-arm64": "0.28.2", "@esbuild/freebsd-x64": "0.28.2", "@esbuild/linux-arm": "0.28.2", "@esbuild/linux-arm64": "0.28.2", "@esbuild/linux-ia32": "0.28.2", "@esbuild/linux-loong64": "0.28.2", "@esbuild/linux-mips64el": "0.28.2", "@esbuild/linux-ppc64": "0.28.2", "@esbuild/linux-riscv64": "0.28.2", "@esbuild/linux-s390x": "0.28.2", "@esbuild/linux-x64": "0.28.2", "@esbuild/netbsd-arm64": "0.28.2", "@esbuild/netbsd-x64": "0.28.2", "@esbuild/openbsd-arm64": "0.28.2", "@esbuild/openbsd-x64": "0.28.2", "@esbuild/openharmony-arm64": "0.28.2", "@esbuild/sunos-x64": "0.28.2", "@esbuild/win32-arm64": "0.28.2", "@esbuild/win32-ia32": "0.28.2", "@esbuild/win32-x64": "0.28.2" }, "bin": { "esbuild": "bin/esbuild" } }, "sha512-HKVLS8dvII+xoKW9kmqxbRKrnWEXfJJr/FZhhJmiqIB0e053QNYFqOBouTMO/k5sID4MvCiUCvv8b9M4h32wIA=="],
 
-    "hono": ["hono@4.13.13", "", {}, "sha512-CQ46U0ZkAGmbT/4UxdzzGJpacP2IeKgY4a5/tOI9AABbpOMfK739wfDXmv1usCk+3RkKj1hQy4/fjhiwa2xlrA=="],
+    "estree-walker": ["estree-walker@2.0.2", "https://registry.npmjs.com/estree-walker/-/estree-walker-2.0.2.tgz", {}, "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w=="],
 
-    "lodash": ["lodash@4.18.1", "", {}, "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="],
+    "evtd": ["evtd@0.2.4", "https://registry.npmjs.com/evtd/-/evtd-0.2.4.tgz", {}, "sha512-qaeGN5bx63s/AXgQo8gj6fBkxge+OoLddLniox5qtLAEY5HSnuSlISXVPxnSae1dWblvTh4/HoMIB+mbMsvZzw=="],
 
-    "lodash-es": ["lodash-es@4.18.1", "", {}, "sha512-J8xewKD/Gk22OZbhpOVSwcs60zhd95ESDwezOFuA3/099925PdHJ7OFHNTGtajL3AlZkykD32HykiMo+BIBI8A=="],
+    "fdir": ["fdir@6.5.0", "https://registry.npmjs.com/fdir/-/fdir-6.5.0.tgz", { "peerDependencies": { "picomatch": "^3 || ^4" }, "optionalPeers": ["picomatch"] }, "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg=="],
 
-    "magic-string": ["magic-string@0.30.21", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
+    "fsevents": ["fsevents@2.3.3", "https://registry.npmjs.com/fsevents/-/fsevents-2.3.3.tgz", { "os": "darwin" }, "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw=="],
 
-    "muggle-string": ["muggle-string@0.4.1", "", {}, "sha512-VNTrAak/KhO2i8dqqnqnAHOa3cYBwXEZe9h+D5h/1ZqFSTEFHdM65lR7RoIqq3tBBYavsOXV84NoHXZ0AkPyqQ=="],
+    "highlight.js": ["highlight.js@11.12.0", "https://registry.npmjs.com/highlight.js/-/highlight.js-11.12.0.tgz", {}, "sha512-nbfWpyRMcMrPMmDwJB+dhX/eiaPKtc2RB+0QZskqJ3WjRA/FDS0e9hZrx8EC/lbEv8gXy98FcDbNa/dspAaJMg=="],
 
-    "naive-ui": ["naive-ui@2.45.3", "", { "dependencies": { "@css-render/plugin-bem": "^0.15.14", "@css-render/vue3-ssr": "^0.15.14", "@types/lodash": "^4.17.20", "@types/lodash-es": "^4.17.12", "async-validator": "^4.2.5", "css-render": "^0.15.14", "csstype": "^3.1.3", "date-fns": "^4.1.0", "date-fns-tz": "^3.2.0", "evtd": "^0.2.4", "highlight.js": "^11.8.0", "lodash": "^4.17.21", "lodash-es": "^4.17.21", "seemly": "^0.3.10", "treemate": "^0.3.11", "vdirs": "^0.1.8", "vooks": "^0.2.12", "vueuc": "^0.4.66" }, "peerDependencies": { "vue": "^3.0.0" } }, "sha512-D83gJ+6zUdkQ5DuUbmlfyaM1t8pV5WMPa6KmL9mByqQuiL12qBdA0n/iEIth4dQw1x/duNGpOS2anpt5FKO1kw=="],
+    "hono": ["hono@4.13.13", "https://registry.npmjs.com/hono/-/hono-4.13.13.tgz", {}, "sha512-CQ46U0ZkAGmbT/4UxdzzGJpacP2IeKgY4a5/tOI9AABbpOMfK739wfDXmv1usCk+3RkKj1hQy4/fjhiwa2xlrA=="],
 
-    "nanoid": ["nanoid@3.3.20", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-uKdg2G3GNCKQn9byYOpxbGqrT2fGO5KRt5J/8b3pok8rT6qxGWF6hxMyJiEYtAf+FVyYuD9hRaDqX5uPFYJ4ZQ=="],
+    "lodash": ["lodash@4.18.1", "https://registry.npmjs.com/lodash/-/lodash-4.18.1.tgz", {}, "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="],
 
-    "path-browserify": ["path-browserify@1.0.1", "", {}, "sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g=="],
+    "lodash-es": ["lodash-es@4.18.1", "https://registry.npmjs.com/lodash-es/-/lodash-es-4.18.1.tgz", {}, "sha512-J8xewKD/Gk22OZbhpOVSwcs60zhd95ESDwezOFuA3/099925PdHJ7OFHNTGtajL3AlZkykD32HykiMo+BIBI8A=="],
 
-    "picocolors": ["picocolors@1.1.1", "", {}, "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA=="],
+    "magic-string": ["magic-string@0.30.21", "https://registry.npmjs.com/magic-string/-/magic-string-0.30.21.tgz", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
 
-    "picomatch": ["picomatch@4.0.7", "", {}, "sha512-qcJu88Q2IWqJsDD529JKMdwGm/dvInW4HvQnRwiH9JtihJvzGOscDtHE3x1pBKeUOTysQ8kVmLnJ2kJu7yhcGA=="],
+    "marked": ["marked@14.0.0", "https://registry.npmjs.com/marked/-/marked-14.0.0.tgz", { "bin": { "marked": "bin/marked.js" } }, "sha512-uIj4+faQ+MgHgwUW1l2PsPglZLOLOT1uErt06dAPtx2kjteLAkbsd/0FiYg/MGS+i7ZKLb7w2WClxHkzOOuryQ=="],
 
-    "postcss": ["postcss@8.5.31", "", { "dependencies": { "nanoid": "^3.3.20", "picocolors": "^1.1.1", "source-map-js": "^1.2.2" } }, "sha512-YUbWYCgErwnMAVkjUnYa+KlMBzGpHwiIt/DE7f0G33AuX2LH9UcTk6KgWxd3zRU+pN3u/C+Xl3EnMLM4Hea7Sg=="],
+    "modern-screenshot": ["modern-screenshot@4.7.0", "https://registry.npmjs.com/modern-screenshot/-/modern-screenshot-4.7.0.tgz", {}, "sha512-9YxN+ddPSMMlhylOv25VHzXrl9u67QRxoh7+SEewGtgUw7t6hHTrjptSDJUSne9oG4Xk/h2cwG15nIt4Hc9ujg=="],
 
-    "rollup": ["rollup@4.64.12", "", { "dependencies": { "@types/estree": "1.0.9" }, "optionalDependencies": { "@napi-rs/lzma-linux-x64-gnu": "1.5.1", "@rollup/rollup-android-arm-eabi": "4.64.12", "@rollup/rollup-android-arm64": "4.64.12", "@rollup/rollup-darwin-arm64": "4.64.12", "@rollup/rollup-darwin-x64": "4.64.12", "@rollup/rollup-freebsd-arm64": "4.64.12", "@rollup/rollup-freebsd-x64": "4.64.12", "@rollup/rollup-linux-arm-gnueabihf": "4.64.12", "@rollup/rollup-linux-arm-musleabihf": "4.64.12", "@rollup/rollup-linux-arm64-gnu": "4.64.12", "@rollup/rollup-linux-arm64-musl": "4.64.12", "@rollup/rollup-linux-loong64-gnu": "4.64.12", "@rollup/rollup-linux-loong64-musl": "4.64.12", "@rollup/rollup-linux-ppc64-gnu": "4.64.12", "@rollup/rollup-linux-ppc64-musl": "4.64.12", "@rollup/rollup-linux-riscv64-gnu": "4.64.12", "@rollup/rollup-linux-riscv64-musl": "4.64.12", "@rollup/rollup-linux-s390x-gnu": "4.64.12", "@rollup/rollup-linux-x64-gnu": "4.64.12", "@rollup/rollup-linux-x64-musl": "4.64.12", "@rollup/rollup-openbsd-x64": "4.64.12", "@rollup/rollup-openharmony-arm64": "4.64.12", "@rollup/rollup-win32-arm64-msvc": "4.64.12", "@rollup/rollup-win32-ia32-msvc": "4.64.12", "@rollup/rollup-win32-x64-gnu": "4.64.12", "@rollup/rollup-win32-x64-msvc": "4.64.12", "fsevents": "~2.3.2" }, "bin": { "rollup": "dist/bin/rollup" } }, "sha512-GhAu8ZglZ61VWSX/ZW3K/qkazgURBIQL0/Yy51QsS8DPyebR5Cf/Z2PANJFpTU0aVZ9byJcyqR6xvBbkXhdGYQ=="],
+    "monaco-editor": ["monaco-editor@0.57.0", "https://registry.npmjs.com/monaco-editor/-/monaco-editor-0.57.0.tgz", { "dependencies": { "dompurify": "3.4.15", "marked": "14.0.0" } }, "sha512-5BkI9KGoqrNvBGUe15/QlZq3OooZ8WLg1AxTpaqHRCP3HNpzPPZKE2EDz8M7c+VRmCeUw1Brp4cx/PWm3kI/5A=="],
 
-    "seemly": ["seemly@0.3.10", "", {}, "sha512-2+SMxtG1PcsL0uyhkumlOU6Qo9TAQ/WyH7tthnPIOQB05/12jz9naq6GZ6iZ6ApVsO3rr2gsnTf3++OV63kE1Q=="],
+    "muggle-string": ["muggle-string@0.4.1", "https://registry.npmjs.com/muggle-string/-/muggle-string-0.4.1.tgz", {}, "sha512-VNTrAak/KhO2i8dqqnqnAHOa3cYBwXEZe9h+D5h/1ZqFSTEFHdM65lR7RoIqq3tBBYavsOXV84NoHXZ0AkPyqQ=="],
 
-    "source-map-js": ["source-map-js@1.2.2", "", {}, "sha512-KGj/8Y43x35aZVDtt+J4mK1hoLGHULMYfSkODJNQjNDC3oW1PqPoxMwo0pLUsWM/UEGzON/NxeHywEfNXNP3Vw=="],
+    "naive-ui": ["naive-ui@2.45.3", "https://registry.npmjs.com/naive-ui/-/naive-ui-2.45.3.tgz", { "dependencies": { "@css-render/plugin-bem": "^0.15.14", "@css-render/vue3-ssr": "^0.15.14", "@types/lodash": "^4.17.20", "@types/lodash-es": "^4.17.12", "async-validator": "^4.2.5", "css-render": "^0.15.14", "csstype": "^3.1.3", "date-fns": "^4.1.0", "date-fns-tz": "^3.2.0", "evtd": "^0.2.4", "highlight.js": "^11.8.0", "lodash": "^4.17.21", "lodash-es": "^4.17.21", "seemly": "^0.3.10", "treemate": "^0.3.11", "vdirs": "^0.1.8", "vooks": "^0.2.12", "vueuc": "^0.4.66" }, "peerDependencies": { "vue": "^3.0.0" } }, "sha512-D83gJ+6zUdkQ5DuUbmlfyaM1t8pV5WMPa6KmL9mByqQuiL12qBdA0n/iEIth4dQw1x/duNGpOS2anpt5FKO1kw=="],
 
-    "tinyglobby": ["tinyglobby@0.2.17", "", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.4" } }, "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g=="],
+    "nanoid": ["nanoid@3.3.20", "https://registry.npmjs.com/nanoid/-/nanoid-3.3.20.tgz", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-uKdg2G3GNCKQn9byYOpxbGqrT2fGO5KRt5J/8b3pok8rT6qxGWF6hxMyJiEYtAf+FVyYuD9hRaDqX5uPFYJ4ZQ=="],
 
-    "treemate": ["treemate@0.3.11", "", {}, "sha512-M8RGFoKtZ8dF+iwJfAJTOH/SM4KluKOKRJpjCMhI8bG3qB74zrFoArKZ62ll0Fr3mqkMJiQOmWYkdYgDeITYQg=="],
+    "path-browserify": ["path-browserify@1.0.1", "https://registry.npmjs.com/path-browserify/-/path-browserify-1.0.1.tgz", {}, "sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g=="],
 
-    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+    "picocolors": ["picocolors@1.1.1", "https://registry.npmjs.com/picocolors/-/picocolors-1.1.1.tgz", {}, "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA=="],
 
-    "undici-types": ["undici-types@8.12.3", "", {}, "sha512-EXE4ydL3S76dFb27UFjNVZHTyv/TLdATj/KUe29ptdcg6qXL48J2tZ3126E5kICj5jn781OR+XlVH1N6Mz8jbA=="],
+    "picomatch": ["picomatch@4.0.7", "https://registry.npmjs.com/picomatch/-/picomatch-4.0.7.tgz", {}, "sha512-qcJu88Q2IWqJsDD529JKMdwGm/dvInW4HvQnRwiH9JtihJvzGOscDtHE3x1pBKeUOTysQ8kVmLnJ2kJu7yhcGA=="],
 
-    "vdirs": ["vdirs@0.1.8", "", { "dependencies": { "evtd": "^0.2.2" }, "peerDependencies": { "vue": "^3.0.11" } }, "sha512-H9V1zGRLQZg9b+GdMk8MXDN2Lva0zx72MPahDKc30v+DtwKjfyOSXWRIX4t2mhDubM1H09gPhWeth/BJWPHGUw=="],
+    "postcss": ["postcss@8.5.31", "https://registry.npmjs.com/postcss/-/postcss-8.5.31.tgz", { "dependencies": { "nanoid": "^3.3.20", "picocolors": "^1.1.1", "source-map-js": "^1.2.2" } }, "sha512-YUbWYCgErwnMAVkjUnYa+KlMBzGpHwiIt/DE7f0G33AuX2LH9UcTk6KgWxd3zRU+pN3u/C+Xl3EnMLM4Hea7Sg=="],
 
-    "vite": ["vite@7.3.7", "", { "dependencies": { "esbuild": "^0.27.0 || ^0.28.0", "fdir": "^6.5.0", "picomatch": "^4.0.3", "postcss": "^8.5.6", "rollup": "^4.43.0", "tinyglobby": "^0.2.15" }, "optionalDependencies": { "fsevents": "~2.3.3" }, "peerDependencies": { "@types/node": "^20.19.0 || >=22.12.0", "jiti": ">=1.21.0", "less": "^4.0.0", "lightningcss": "^1.21.0", "sass": "^1.70.0", "sass-embedded": "^1.70.0", "stylus": ">=0.54.8", "sugarss": "^5.0.0", "terser": "^5.16.0", "tsx": "^4.8.1", "yaml": "^2.4.2" }, "optionalPeers": ["@types/node", "jiti", "less", "lightningcss", "sass", "sass-embedded", "stylus", "sugarss", "terser", "tsx", "yaml"], "bin": { "vite": "bin/vite.js" } }, "sha512-AHEzTORMbi7/7aXp7w7KZ5+DCUdSeLsJz0grY8xHpc9DHdYb0vQu6DqJfm2tOw3gDExNgPgnJTXxM6syYFHaCA=="],
+    "rollup": ["rollup@4.64.12", "https://registry.npmjs.com/rollup/-/rollup-4.64.12.tgz", { "dependencies": { "@types/estree": "1.0.9" }, "optionalDependencies": { "@napi-rs/lzma-linux-x64-gnu": "1.5.1", "@rollup/rollup-android-arm-eabi": "4.64.12", "@rollup/rollup-android-arm64": "4.64.12", "@rollup/rollup-darwin-arm64": "4.64.12", "@rollup/rollup-darwin-x64": "4.64.12", "@rollup/rollup-freebsd-arm64": "4.64.12", "@rollup/rollup-freebsd-x64": "4.64.12", "@rollup/rollup-linux-arm-gnueabihf": "4.64.12", "@rollup/rollup-linux-arm-musleabihf": "4.64.12", "@rollup/rollup-linux-arm64-gnu": "4.64.12", "@rollup/rollup-linux-arm64-musl": "4.64.12", "@rollup/rollup-linux-loong64-gnu": "4.64.12", "@rollup/rollup-linux-loong64-musl": "4.64.12", "@rollup/rollup-linux-ppc64-gnu": "4.64.12", "@rollup/rollup-linux-ppc64-musl": "4.64.12", "@rollup/rollup-linux-riscv64-gnu": "4.64.12", "@rollup/rollup-linux-riscv64-musl": "4.64.12", "@rollup/rollup-linux-s390x-gnu": "4.64.12", "@rollup/rollup-linux-x64-gnu": "4.64.12", "@rollup/rollup-linux-x64-musl": "4.64.12", "@rollup/rollup-openbsd-x64": "4.64.12", "@rollup/rollup-openharmony-arm64": "4.64.12", "@rollup/rollup-win32-arm64-msvc": "4.64.12", "@rollup/rollup-win32-ia32-msvc": "4.64.12", "@rollup/rollup-win32-x64-gnu": "4.64.12", "@rollup/rollup-win32-x64-msvc": "4.64.12", "fsevents": "~2.3.2" }, "bin": { "rollup": "dist/bin/rollup" } }, "sha512-GhAu8ZglZ61VWSX/ZW3K/qkazgURBIQL0/Yy51QsS8DPyebR5Cf/Z2PANJFpTU0aVZ9byJcyqR6xvBbkXhdGYQ=="],
 
-    "vooks": ["vooks@0.2.12", "", { "dependencies": { "evtd": "^0.2.2" }, "peerDependencies": { "vue": "^3.0.0" } }, "sha512-iox0I3RZzxtKlcgYaStQYKEzWWGAduMmq+jS7OrNdQo1FgGfPMubGL3uGHOU9n97NIvfFDBGnpSvkWyb/NSn/Q=="],
+    "seemly": ["seemly@0.3.10", "https://registry.npmjs.com/seemly/-/seemly-0.3.10.tgz", {}, "sha512-2+SMxtG1PcsL0uyhkumlOU6Qo9TAQ/WyH7tthnPIOQB05/12jz9naq6GZ6iZ6ApVsO3rr2gsnTf3++OV63kE1Q=="],
 
-    "vscode-uri": ["vscode-uri@3.2.0", "", {}, "sha512-m2gXo3bn0G1kT9InzMf07fTbqMbGtyckj3bH5ktLO+1Ssv+yiATZ4dhwaQv9UZWxJh6E9IFGnQyjgWVDWVBDrg=="],
+    "source-map-js": ["source-map-js@1.2.2", "https://registry.npmjs.com/source-map-js/-/source-map-js-1.2.2.tgz", {}, "sha512-KGj/8Y43x35aZVDtt+J4mK1hoLGHULMYfSkODJNQjNDC3oW1PqPoxMwo0pLUsWM/UEGzON/NxeHywEfNXNP3Vw=="],
 
-    "vue": ["vue@3.5.44", "", { "dependencies": { "@vue/compiler-dom": "3.5.44", "@vue/compiler-sfc": "3.5.44", "@vue/runtime-dom": "3.5.44", "@vue/server-renderer": "3.5.44", "@vue/shared": "3.5.44" }, "peerDependencies": { "typescript": "*" }, "optionalPeers": ["typescript"] }, "sha512-dvvmaOCG7lAMkJTPqPwWeGMsPS6DIsFsfZDUgBp9V6mHf9b3+/wyVwYR4Es+WV6uJC0FKRxp81Obcq0ZwUcGFQ=="],
+    "tinyglobby": ["tinyglobby@0.2.17", "https://registry.npmjs.com/tinyglobby/-/tinyglobby-0.2.17.tgz", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.4" } }, "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g=="],
 
-    "vue-tsc": ["vue-tsc@3.3.13", "", { "dependencies": { "@volar/typescript": "2.4.28", "@vue/language-core": "3.3.13" }, "peerDependencies": { "typescript": ">=5.0.0" }, "bin": { "vue-tsc": "bin/vue-tsc.js" } }, "sha512-jE4/bXdOMSHVxEGgQCqNllJy+9N3Gx6tfSAsg0yhFK/MAN6eXqISihupnDEKSCt12VVnjN2gI3AqLYcqoh5x/A=="],
+    "treemate": ["treemate@0.3.11", "https://registry.npmjs.com/treemate/-/treemate-0.3.11.tgz", {}, "sha512-M8RGFoKtZ8dF+iwJfAJTOH/SM4KluKOKRJpjCMhI8bG3qB74zrFoArKZ62ll0Fr3mqkMJiQOmWYkdYgDeITYQg=="],
 
-    "vueuc": ["vueuc@0.4.66", "", { "dependencies": { "@css-render/vue3-ssr": "^0.15.10", "@juggle/resize-observer": "^3.3.1", "css-render": "^0.15.10", "evtd": "^0.2.4", "seemly": "^0.3.6", "vdirs": "^0.1.4", "vooks": "^0.2.4" }, "peerDependencies": { "vue": "^3.0.11" } }, "sha512-hHrZl+0AsrUvqYPBXSXQ2QaSrO3razjeUseLAhJWlOS/Hdfw/Y2MU05fOTP1qn1A3121gMxsHLaEz2V6CkWdTg=="],
+    "typescript": ["typescript@5.9.3", "https://registry.npmjs.com/typescript/-/typescript-5.9.3.tgz", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 
-    "@types/node/undici-types": ["undici-types@8.9.0", "", {}, "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg=="],
+    "undici-types": ["undici-types@8.12.3", "https://registry.npmjs.com/undici-types/-/undici-types-8.12.3.tgz", {}, "sha512-EXE4ydL3S76dFb27UFjNVZHTyv/TLdATj/KUe29ptdcg6qXL48J2tZ3126E5kICj5jn781OR+XlVH1N6Mz8jbA=="],
 
-    "css-render/csstype": ["csstype@3.0.11", "", {}, "sha512-sa6P2wJ+CAbgyy4KFssIb/JNMLxFvKF1pCYCSXS8ZMuqZnMsrxqI2E5sPyoTpxoPU/gVZMzr2zjOfg8GIZOMsw=="],
+    "vdirs": ["vdirs@0.1.8", "https://registry.npmjs.com/vdirs/-/vdirs-0.1.8.tgz", { "dependencies": { "evtd": "^0.2.2" }, "peerDependencies": { "vue": "^3.0.11" } }, "sha512-H9V1zGRLQZg9b+GdMk8MXDN2Lva0zx72MPahDKc30v+DtwKjfyOSXWRIX4t2mhDubM1H09gPhWeth/BJWPHGUw=="],
+
+    "vite": ["vite@7.3.7", "https://registry.npmjs.com/vite/-/vite-7.3.7.tgz", { "dependencies": { "esbuild": "^0.27.0 || ^0.28.0", "fdir": "^6.5.0", "picomatch": "^4.0.3", "postcss": "^8.5.6", "rollup": "^4.43.0", "tinyglobby": "^0.2.15" }, "optionalDependencies": { "fsevents": "~2.3.3" }, "peerDependencies": { "@types/node": "^20.19.0 || >=22.12.0", "jiti": ">=1.21.0", "less": "^4.0.0", "lightningcss": "^1.21.0", "sass": "^1.70.0", "sass-embedded": "^1.70.0", "stylus": ">=0.54.8", "sugarss": "^5.0.0", "terser": "^5.16.0", "tsx": "^4.8.1", "yaml": "^2.4.2" }, "optionalPeers": ["@types/node", "jiti", "less", "lightningcss", "sass", "sass-embedded", "stylus", "sugarss", "terser", "tsx", "yaml"], "bin": { "vite": "bin/vite.js" } }, "sha512-AHEzTORMbi7/7aXp7w7KZ5+DCUdSeLsJz0grY8xHpc9DHdYb0vQu6DqJfm2tOw3gDExNgPgnJTXxM6syYFHaCA=="],
+
+    "vooks": ["vooks@0.2.12", "https://registry.npmjs.com/vooks/-/vooks-0.2.12.tgz", { "dependencies": { "evtd": "^0.2.2" }, "peerDependencies": { "vue": "^3.0.0" } }, "sha512-iox0I3RZzxtKlcgYaStQYKEzWWGAduMmq+jS7OrNdQo1FgGfPMubGL3uGHOU9n97NIvfFDBGnpSvkWyb/NSn/Q=="],
+
+    "vscode-uri": ["vscode-uri@3.2.0", "https://registry.npmjs.com/vscode-uri/-/vscode-uri-3.2.0.tgz", {}, "sha512-m2gXo3bn0G1kT9InzMf07fTbqMbGtyckj3bH5ktLO+1Ssv+yiATZ4dhwaQv9UZWxJh6E9IFGnQyjgWVDWVBDrg=="],
+
+    "vue": ["vue@3.5.44", "https://registry.npmjs.com/vue/-/vue-3.5.44.tgz", { "dependencies": { "@vue/compiler-dom": "3.5.44", "@vue/compiler-sfc": "3.5.44", "@vue/runtime-dom": "3.5.44", "@vue/server-renderer": "3.5.44", "@vue/shared": "3.5.44" }, "peerDependencies": { "typescript": "*" }, "optionalPeers": ["typescript"] }, "sha512-dvvmaOCG7lAMkJTPqPwWeGMsPS6DIsFsfZDUgBp9V6mHf9b3+/wyVwYR4Es+WV6uJC0FKRxp81Obcq0ZwUcGFQ=="],
+
+    "vue-router": ["vue-router@4.6.4", "https://registry.npmjs.com/vue-router/-/vue-router-4.6.4.tgz", { "dependencies": { "@vue/devtools-api": "^6.6.4" }, "peerDependencies": { "vue": "^3.5.0" } }, "sha512-Hz9q5sa33Yhduglwz6g9skT8OBPii+4bFn88w6J+J4MfEo4KRRpmiNG/hHHkdbRFlLBOqxN8y8gf2Fb0MTUgVg=="],
+
+    "vue-tsc": ["vue-tsc@3.3.13", "https://registry.npmjs.com/vue-tsc/-/vue-tsc-3.3.13.tgz", { "dependencies": { "@volar/typescript": "2.4.28", "@vue/language-core": "3.3.13" }, "peerDependencies": { "typescript": ">=5.0.0" }, "bin": { "vue-tsc": "bin/vue-tsc.js" } }, "sha512-jE4/bXdOMSHVxEGgQCqNllJy+9N3Gx6tfSAsg0yhFK/MAN6eXqISihupnDEKSCt12VVnjN2gI3AqLYcqoh5x/A=="],
+
+    "vueuc": ["vueuc@0.4.66", "https://registry.npmjs.com/vueuc/-/vueuc-0.4.66.tgz", { "dependencies": { "@css-render/vue3-ssr": "^0.15.10", "@juggle/resize-observer": "^3.3.1", "css-render": "^0.15.10", "evtd": "^0.2.4", "seemly": "^0.3.6", "vdirs": "^0.1.4", "vooks": "^0.2.4" }, "peerDependencies": { "vue": "^3.0.11" } }, "sha512-hHrZl+0AsrUvqYPBXSXQ2QaSrO3razjeUseLAhJWlOS/Hdfw/Y2MU05fOTP1qn1A3121gMxsHLaEz2V6CkWdTg=="],
+
+    "@types/node/undici-types": ["undici-types@8.9.0", "https://registry.npmjs.com/undici-types/-/undici-types-8.9.0.tgz", {}, "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg=="],
+
+    "css-render/csstype": ["csstype@3.0.11", "https://registry.npmjs.com/csstype/-/csstype-3.0.11.tgz", {}, "sha512-sa6P2wJ+CAbgyy4KFssIb/JNMLxFvKF1pCYCSXS8ZMuqZnMsrxqI2E5sPyoTpxoPU/gVZMzr2zjOfg8GIZOMsw=="],
   }
 }

bunfig.toml

@@ -0,0 +1,5 @@
+# bun fmt 的格式：和项目原来的写法一致（不写分号、单引号、一行最长 160）
+[fmt]
+printWidth = 160
+semi = false
+singleQuote = true

compose.yaml

@@ -0,0 +1,93 @@
+# 部署：先在 .env 里写好 TEACHER_PASSWORD（参考 .env.example），再 docker compose up -d
+# HTTPS 由 Nginx Proxy Manager 负责，它在 npm_proxy 网络里转发到 iot-sim:80；步骤见 deploy/README.md
+services:
+  # 启动前把数据卷交给平台用户（Docker 新建数据卷时属主是 root，平台用普通用户运行，写不进去）
+  init-data:
+    image: iot-sim:latest
+    # 和 app 同一个镜像（构建有缓存，不会重复构建）；写上 build，新服务器上就不会去 Docker Hub 拉这个镜像
+    build: &build
+      context: .
+      # build：在镜像里编（默认）；prebuilt：用 prebuilt/ 里开发机编好的产物，见 Dockerfile 开头
+      args:
+        ARTIFACTS: ${ARTIFACTS:-build}
+    user: root
+    command: ['sh', '-c', 'chown -R "$$APP_UID" /data']
+    volumes:
+      - data:/data
+    restart: 'no'
+    networks: [default]
+
+  app:
+    image: iot-sim:latest
+    build: *build
+    restart: unless-stopped
+    logging: &logging # 默认的 json-file 日志不限大小，会一直涨
+      driver: json-file
+      options:
+        max-size: 10m
+        max-file: '3'
+    depends_on:
+      init-data:
+        condition: service_completed_successfully
+    environment:
+      # 老师账号（只有一个）；学生账号由老师在网页上导入名单
+      TEACHER_USERNAME: ${TEACHER_USERNAME:-admin}
+      TEACHER_PASSWORD: ${TEACHER_PASSWORD:?请在 .env 里设置 TEACHER_PASSWORD}
+      DATA_DIR: /data
+      # AI 评阅（DeepSeek）；不设置密钥就不做 AI 评阅
+      DEEPSEEK_API_KEY: ${DEEPSEEK_API_KEY:-}
+      AI_MODEL: ${AI_MODEL:-deepseek-flash}
+      # 以下可在 .env 里调整，说明见 deploy/README.md
+      SIM_MAX_RUNS: ${SIM_MAX_RUNS:-150}
+      SIM_HEAP_LIMIT_MB: ${SIM_HEAP_LIMIT_MB:-128}
+      SIM_CPU_LIMIT_SECONDS: ${SIM_CPU_LIMIT_SECONDS:-120}
+      SIM_MAX_RUN_MINUTES: ${SIM_MAX_RUN_MINUTES:-60}
+      SIM_GRADE_CONCURRENCY: ${SIM_GRADE_CONCURRENCY:-16}
+    # 容器文件系统只读，只有 /tmp（学生工程的临时目录）和数据卷可写
+    read_only: true
+    tmpfs:
+      - /tmp:size=1g
+    # 数据库（账号、班级、学生作品），重新部署不会丢
+    volumes:
+      - data:/data
+      # 导出 EXE 用的教材设备类库（真机版 dll，有版权，不进仓库）：放在服务器的 ~/IOT_SIM/textbook-libs/，见 deploy/README.md
+      - ./textbook-libs:/app/textbook-libs:ro
+    cap_drop: [ALL]
+    security_opt:
+      - no-new-privileges:true
+      # bubblewrap 要创建用户命名空间、挂载新的 /proc，Docker 默认的 seccomp 规则和 /proc 遮罩会拦住它。
+      # 放开后，学生程序仍然在 bubblewrap 里：断网、看不到其他进程和文件、不是 root。
+      - seccomp=unconfined
+      - apparmor=unconfined
+      - systempaths=unconfined
+    # 整个平台的资源上限（两个班同时运行约需 1.5 GB），可在 .env 里用 APP_MEM_LIMIT 调整
+    mem_limit: ${APP_MEM_LIMIT:-4g}
+    pids_limit: 4096
+    expose: ['3000']
+    networks: [default]
+
+  caddy:
+    image: caddy:2-alpine
+    restart: unless-stopped
+    logging: *logging
+    depends_on: [app]
+    expose:
+      - 80
+    networks:
+      default:
+      npm_proxy:
+        # NPM 里转发到 http://iot-sim:80
+        aliases: [iot-sim]
+    volumes:
+      - ./deploy/Caddyfile:/etc/caddy/Caddyfile:ro
+      - caddy_data:/data
+      - caddy_config:/config
+
+volumes:
+  data:
+  caddy_data:
+  caddy_config:
+
+networks:
+  npm_proxy:
+    external: true

deploy/Caddyfile

@@ -0,0 +1,17 @@
+# HTTPS 由 Nginx Proxy Manager 负责，Caddy 只在 80 端口收 HTTP，转发给应用（包括 WebSocket /ws）。
+{
+	auto_https off
+	servers {
+		# NPM 在 Docker 内网里，信任它带来的 X-Forwarded-For，取到学生的真实 IP。
+		# 如果 NPM 前面还有公网上的 CDN，把 CDN 的 IP 段加在 private_ranges 后面。
+		trusted_proxies static private_ranges
+		trusted_proxies_strict
+	}
+}
+
+:80 {
+	encode zstd gzip
+	reverse_proxy app:3000 {
+		header_up X-Real-IP {client_ip}
+	}
+}

deploy/README.md

@@ -0,0 +1,190 @@
+# 部署
+
+服务器上的结构：
+
+```
+学生浏览器 ──HTTPS──▶ Nginx Proxy Manager（443） ──npm_proxy 网络──▶ caddy（iot-sim:80） ──▶ app（Bun + .NET + bubblewrap）
+```
+
+- **app**：Bun 服务端、打包好的网页、C# 编译服务。学生程序每次运行都放进 bubblewrap 沙箱：断网，看不到服务器文件和其他进程，工程目录只读，限制内存（128 MB）、CPU 时间（120 秒）和运行时长（60 分钟）。
+- **caddy**：只收 HTTP，转发给 app，压缩网页；从 NPM 转发来的 `X-Forwarded-For` 里取学生的真实 IP。
+- 不映射宿主机端口，NPM 通过外部网络 `npm_proxy` 访问 `iot-sim:80`。
+
+## 服务器要求
+
+- Linux，Docker 和 Docker Compose v2，已有外部网络 `npm_proxy`（NPM 所在的网络）。
+- 2 核 8G 足够两个班同时使用（实测 100 个程序同时运行约 1.1 GB）。
+- 沙箱需要宿主机允许非特权用户命名空间。**Debian 12（本平台的服务器）默认允许**，不用设置，可用 `sysctl kernel.unprivileged_userns_clone` 确认输出为 1。
+- **Ubuntu 23.10 及以上**默认禁止，沙箱会起不来，需要放开：
+
+  ```bash
+  echo 'kernel.apparmor_restrict_unprivileged_userns=0' | sudo tee /etc/sysctl.d/60-userns.conf
+  sudo sysctl --system
+  ```
+
+  其他发行版一般不需要。服务器启动时会自检沙箱，不通过会在日志里打印原因，并拒绝运行学生代码（不会在无隔离的情况下运行）。
+
+## 第一次部署
+
+服务器上的 `~/IOT_SIM` 是从 origin（git.xuyue.cc）克隆的仓库，镜像在服务器上构建；配置只放在 `.env`（不进 git）。
+
+1. 服务器要能拉取 origin：仓库是私有的话，在服务器上生成一把密钥（`ssh-keygen -t ed25519`），把公钥加到 git.xuyue.cc 仓库的部署密钥（只读）里。
+
+2. 克隆仓库，准备口令：
+
+   ```bash
+   git clone git@git.xuyue.cc:xuyue/IOT_SIM.git ~/IOT_SIM
+   cd ~/IOT_SIM
+   echo 'TEACHER_PASSWORD=换成你的密码' > .env
+   chmod 600 .env
+   ```
+
+   `~/IOT_SIM` 已经存在（比如以前用脚本上传过文件）时，就地变成仓库，已有的 `.env` 会保留：
+
+   ```bash
+   cd ~/IOT_SIM
+   git init -q && git remote add origin git@git.xuyue.cc:xuyue/IOT_SIM.git
+   git fetch origin && git checkout -f -B main origin/main
+   ```
+
+3. 构建并启动：
+
+   ```bash
+   deploy/update.sh
+   ```
+
+   拉取代码、构建镜像（第一次要下载 .NET SDK、Bun 等镜像和依赖，之后有缓存）、启动，最后应看到"部署成功"。
+
+4. 在 Nginx Proxy Manager 里添加 Proxy Host：
+   - Domain Names：已备案的域名
+   - Scheme：`http`，Forward Hostname / IP：`iot-sim`，Forward Port：`80`
+   - **打开 Websockets Support**（运行程序靠 WebSocket，不打开会一直连不上）
+   - Advanced 里加一行 `client_max_body_size 10m;`（NPM 默认只允许 1 MB，带界面截图的作业提交可能超过）
+   - SSL：申请证书，打开 Force SSL
+
+5. 浏览器打开域名，用老师账号登录，在"班级管理"里建班、导入学生名单。
+
+数据库（账号、班级、学生作品）在 Docker 数据卷 `data` 里，重新部署不会丢；`docker compose down -v` 会删除数据卷，不要加 `-v`。
+
+## 自动部署（push origin 就部署）
+
+`.gitea/workflows/deploy.yml`：push 到 origin（git.xuyue.cc）的 main 时，**开发机上的 gitea-runner** 编 C# 运行时、网页和 `server.js`，跑服务端测试（含沙箱）、网页端测试和类型检查（有一项不过就不部署），把产物 rsync 到服务器的 `~/IOT_SIM/prebuilt/`，再在服务器上执行 `deploy/update.sh <提交号> --prebuilt`：拉代码、用现成产物构建镜像（只剩几条 COPY）、重启，等到"编译服务已就绪"才算成功。push 后一两分钟上线，进度在 git.xuyue.cc/xuyue/IOT_SIM/actions。
+
+- `update.sh` 由 `deploy/update-bg.sh` 在服务器上**后台**跑，SSH 断了（开发机切代理、换网络）它照样跑完，runner 重连后接着看输出、拿结果。以前它跑在 SSH 会话里，断线时正好在 `docker compose up` 中间，旧容器删了、新容器没启动，网站就停了。服务器上的部署输出在 `/var/tmp/iot_sim-update.log`。
+- **重启会结束正在运行的学生程序**，上课时间尽量不要推送 main。
+- **push 时开发机得开着。** 没开的话任务在 Gitea 里排队，开机后 runner 连上就接着跑；排队超过 24 小时会被作废，要在 Actions 页面重跑。
+- 在 Gitea 的 Actions 页面点 Run workflow 可以手动重新部署（比如改了服务器上的 `.env` 之后）。
+- `prebuilt/COMMIT` 记着产物是哪个提交编的，和要部署的提交对不上时 `update.sh` 直接失败，不会把旧产物配新代码。
+
+为什么不在服务器或 GitHub 上编：服务器只有 2 核，学生程序也在上面跑，以前服务器自己编约一分钟，dotnet 和 vite 把两个核占满；GitHub 上测试约 5 分钟，push 后 6 分钟多才上线。开发机 16 核，服务端测试同时跑（`bun test --parallel`，评分测试标了 `describe.concurrent`）约半分钟。
+
+**服务器自己编的能力还在**：`deploy/update.sh` 不带 `--prebuilt` 就是在镜像里编（`Dockerfile` 的构建参数 `ARTIFACTS` 默认 `build`），只要有 docker 就能部署，不依赖开发机。
+
+### 部署 runner
+
+和 OJ2 共用开发机上的同一个 runner（host 模式，注册在 git.xuyue.cc 的 `xuyue` 用户下，标签 `oj2-deploy`、`iot-deploy`，一次只跑一个任务，两边的部署排队）。装法、配置文件位置、换机器重新注册见 OJ2 仓库 `docs/deploy.md` 的"部署 runner"。
+
+host 模式直接用开发机自己的东西，所以**不需要配任何 secret**：
+
+- PATH 里的 bun、dotnet 10 SDK、bubblewrap（测试里学生程序在沙箱中运行）、rsync；
+- `~/.ssh/config` 里的 `debian`（root@服务器，服务器目录 `/root/IOT_SIM`）；
+- 能 `git fetch git@git.xuyue.cc:xuyue/IOT_SIM.git`（都不能要密码）。
+
+开发机的 bun 版本和 `Dockerfile` 里镜像的 bun 不一样时，工作流会给出警告（`server.js` 是开发机打包、镜像里的 bun 运行的）。
+
+### 备用：GitHub 手动触发
+
+`.github/workflows/ci.yml` 只在 PR 时跑测试，push 不触发（不然每次推送两边各部署一遍）。开发机不在、又急着上线时，在 github.com 的 Actions → CI/CD → Run workflow：测试通过后 SSH 到服务器执行 `deploy/update-bg.sh <提交号>`（后台跑 `update.sh`），**服务器自己编**。这个提交要已经推到 origin（服务器从 origin 拉代码，没到时脚本会等最多约 100 秒）。
+
+一次性配置（在本机执行，需要已登录的 `gh`）：
+
+1. 服务器上的部署用户要能运行 docker（在 docker 组里），并按上面"第一次部署"准备好 `~/IOT_SIM`。
+2. 生成部署专用的 SSH 密钥（GitHub Actions 用它登录服务器），公钥放到服务器，私钥和服务器信息存进仓库 Secrets：
+
+   ```bash
+   ssh-keygen -t ed25519 -N '' -C iot-sim-deploy -f /tmp/iot_deploy
+   ssh-copy-id -i /tmp/iot_deploy.pub 用户@服务器
+   gh secret set DEPLOY_SSH_KEY -R yuetsh/IOT_SIM < /tmp/iot_deploy
+   gh secret set DEPLOY_HOST -R yuetsh/IOT_SIM -b 服务器地址
+   gh secret set DEPLOY_USER -R yuetsh/IOT_SIM -b 用户名
+   rm /tmp/iot_deploy /tmp/iot_deploy.pub
+   ```
+
+   SSH 端口不是 22 时，再设置 `DEPLOY_PORT`；服务器目录不是 `~/IOT_SIM` 时，设置变量 `gh variable set DEPLOY_DIR -R yuetsh/IOT_SIM -b 目录`。
+
+## 日常操作
+
+在服务器的 `~/IOT_SIM` 目录下：
+
+| 做什么       | 命令                                                                                                      |
+| ------------ | --------------------------------------------------------------------------------------------------------- |
+| 更新到新版本 | `git push origin main`（开发机测试、编好后自动部署），或在服务器上执行 `deploy/update.sh`（服务器自己编） |
+| 改老师密码   | 修改 `.env` 后 `docker compose up -d`                                                                     |
+| 学生账号     | 老师登录后在"班级管理"里导入名单、查看和重置密码                                                          |
+| 看日志       | `docker compose logs -f app`                                                                              |
+| 看资源占用   | `docker stats`                                                                                            |
+| 备份数据     | `deploy/backup.sh`，见下文"备份与恢复"                                                                    |
+| 重启 / 停止  | `docker compose restart` / `docker compose down`                                                          |
+
+## 导出 EXE、VS 工程用的教材类库
+
+实验页的"导出 EXE"把学生的程序编译成 Windows 程序，嵌入教材的**真机版**设备类库，在机房电脑上双击就能控制真的实训台；"导出 VS 工程"把这些 dll 放在工程的 lib 文件夹里。这些 dll 是教材配套资料，有版权，不进仓库（GitHub 上的仓库是公开的），要单独拷到服务器的 `~/IOT_SIM/textbook-libs/`（compose 把它只读挂进容器）。没放时导出会提示"服务器上没有放教材的设备类库"，其他功能不受影响。
+
+放进同一个目录（不分子目录）的文件，都在教材配套资料里：
+
+| 文件                                                                                                                            | 在配套资料里的位置                                  |
+| ------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------- |
+| `DeviceCtrlLibrary.dll`                                                                                                         | `公共库/设备控制类库/设备控制/`（**不是** `仿真/`） |
+| `ComLibrary.dll`、`ICS.Acquisition.dll`、`ICS.Common.dll`、`ICS.Models.dll`、`IPCameraDll.dll`、`LEDLibrary.dll`、`MyCamer.dll` | `公共库/设备控制类库/设备控制/API/`                 |
+| `WinFormsDeviceControlLibrary.dll`                                                                                              | `公共库/设备控件库/`                                |
+| `AxInterop.WMPLib.dll`、`Interop.WMPLib.dll`（媒体播放器，项目 7 任务 2）                                                       | `项目7/任务二/寝室情景模式/寝室情景模式/bin/Debug/` |
+
+在本机（配套资料解压在 `~/下载/物联网编程与应用配套/`）执行：
+
+```bash
+B=~/下载/物联网编程与应用配套/物联网编程与应用
+ssh 服务器 mkdir -p IOT_SIM/textbook-libs
+scp "$B"/公共库/设备控制类库/设备控制/DeviceCtrlLibrary.dll "$B"/公共库/设备控制类库/设备控制/API/*.dll \
+    "$B"/公共库/设备控件库/WinFormsDeviceControlLibrary.dll \
+    "$B"/项目7/任务二/寝室情景模式/寝室情景模式/bin/Debug/*Interop.WMPLib.dll 服务器:IOT_SIM/textbook-libs/
+```
+
+容器里的平台用普通用户运行，目录和文件要让其他用户能读（用 root 拷的文件常常是 `-rw-------`，导出时会提示"权限不够"）：
+
+```bash
+chmod 755 ~/IOT_SIM/textbook-libs
+chmod 644 ~/IOT_SIM/textbook-libs/*.dll
+```
+
+拷好后不用重启，下一次导出就能用。本机开发时同样放在仓库根目录的 `textbook-libs/`（已在 .gitignore 里），也可以用环境变量 `SIM_TEXTBOOK_LIBS` 指到别处。
+
+## 备份与恢复
+
+平台不自动备份，在服务器的 `~/IOT_SIM` 下手动执行：
+
+```bash
+deploy/backup.sh                          # 备份到 backups/<日期时间>/，平台运行中也可以，学生不受影响
+deploy/restore.sh backups/20261025-153000 # 用某份备份替换现在的全部数据
+```
+
+- 备份包括账号、班级、学生作品、作业、提交、评阅（`iot-sim.db`）和每个学生自己的数据库（`databases/`）。一个班一学期的数据估计两三百 MB，主要是提交时的界面截图。
+- 备份放在宿主机的 `~/IOT_SIM/backups/` 里，不在 Docker 数据卷里，误删数据卷也还在；**要防服务器硬盘坏，把这个目录拷到别的机器上**。
+- 建议在部署大的新版本前、学期中间、期末导出成绩后各备份一次。
+- 恢复会先自动备份现在的数据（恢复错了还能换回来），然后停止平台约十几秒、替换数据、重新启动；正在运行的学生程序会结束，尽量不在上课时恢复。
+
+## 可调参数
+
+写在 `.env` 里，改完 `docker compose up -d` 生效。
+
+| 变量                    | 默认             | 说明                                                                                                                                                                               |
+| ----------------------- | ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `TEACHER_PASSWORD`      | （必填）         | 老师账号的密码                                                                                                                                                                     |
+| `TEACHER_USERNAME`      | `admin`          | 老师账号                                                                                                                                                                           |
+| `DEEPSEEK_API_KEY`      | （空）           | AI 评阅用的 DeepSeek 密钥；不填就不做 AI 评阅                                                                                                                                      |
+| `AI_MODEL`              | `deepseek-flash` | AI 评阅用的模型（需要支持图片输入）                                                                                                                                                |
+| `APP_MEM_LIMIT`         | `4g`             | 整个平台的内存上限                                                                                                                                                                 |
+| `SIM_MAX_RUNS`          | `150`            | 全站同时运行的学生程序上限，超过时提示"服务器繁忙"                                                                                                                                 |
+| `SIM_HEAP_LIMIT_MB`     | `128`            | 每个学生程序的内存上限                                                                                                                                                             |
+| `SIM_CPU_LIMIT_SECONDS` | `120`            | 每次运行累计 CPU 时间上限（防死循环）                                                                                                                                              |
+| `SIM_MAX_RUN_MINUTES`   | `60`             | 每次运行最长时间                                                                                                                                                                   |
+| `SIM_GRADE_CONCURRENCY` | `16`             | 全站同时跑几个评分检查项（提交评分和"自己检查"共用）。2 核实测：45 人同时自测项目 8 任务 3，最后一人约 1.5 分钟出结果；调到 24 以上 CPU 不够，定时器来不及触发，正确的程序会被误判 |

deploy/backup.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# 在服务器上执行：备份平台的全部数据（账号、班级、学生作品、作业、提交、评阅，以及每个学生自己的数据库）
+# 到 backups/<日期时间>/。备份在宿主机上，不在 Docker 数据卷里，数据卷被删也还在；要防硬盘坏，把它拷到别的机器上。
+# 平台运行中也可以备份，学生不受影响。恢复见 deploy/restore.sh。
+# 用法：deploy/backup.sh
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+mkdir -p backups
+name=$(date +%Y%m%d-%H%M%S)
+# 同一秒里做了两次（如 restore.sh 恢复前先备份）时，等到下一秒，不和已有的备份重名
+while [[ -e backups/$name ]]; do
+  sleep 1
+  name=$(date +%Y%m%d-%H%M%S)
+done
+inside=/data/.backup-$name
+# 在容器里导出（SQLite 一致读取，不会备份出写了一半的库），再拷到宿主机
+docker compose exec -T app bun server.js backup "$inside" >/dev/null
+docker compose cp "app:$inside" "backups/$name" 2>/dev/null
+docker compose exec -T app rm -rf "$inside"
+echo "已备份到 $(pwd)/backups/$name（$(du -sh "backups/$name" | cut -f1)）"

deploy/restore.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# 在服务器上执行：用 deploy/backup.sh 做的备份替换平台现在的全部数据。
+# 替换前先自动备份现在的数据（恢复错了还能换回来）；恢复时平台停止约十几秒，正在运行的学生程序会结束。
+# 用法：deploy/restore.sh backups/<日期时间>
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+dir=${1:?用法：deploy/restore.sh backups/<日期时间>}
+if [[ ! -f $dir/iot-sim.db ]]; then
+  echo "$dir 不是备份目录（里面应该有 iot-sim.db）"
+  exit 1
+fi
+read -r -p "用 $dir 替换平台现在的全部数据？现在的数据会先备份。[y/N] " answer
+[[ $answer == y || $answer == Y ]] || exit 1
+
+echo "== 备份现在的数据"
+deploy/backup.sh
+echo "== 停止平台、替换数据"
+docker compose stop app
+# 旧库的 -wal、-shm 文件一定要删掉，否则会被当成新库的未写完的日志，把恢复的库弄坏
+docker compose run --rm --no-deps -T -v "$(realpath "$dir"):/restore:ro" app \
+  sh -c 'rm -rf /data/iot-sim.db /data/iot-sim.db-wal /data/iot-sim.db-shm /data/databases && cp -r /restore/. /data/'
+echo "== 启动平台"
+docker compose up -d app
+echo "已恢复到 $dir"

deploy/update-bg.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+# 在服务器上执行：后台跑 deploy/update.sh，前台跟着输出，退出码和 update.sh 一样。
+# 用法：deploy/update-bg.sh <提交号> [--prebuilt]   开始部署这个提交并跟着看
+#       deploy/update-bg.sh --follow <提交号>        接着看这个提交的部署（SSH 断线重连后用）；
+#                                                     这个提交的部署还没开始过时退出码 75
+#
+# 为什么要后台跑：以前 update.sh 直接跑在 SSH 会话里，SSH 一断（开发机网络切换、代理重启）就跟着被杀。
+# 2026-11-03 断在 docker compose up 中间：旧容器删了、新容器只创建没启动，网站停了 40 分钟。
+# 现在 update.sh 在新会话里跑（setsid），SSH 断了它照样跑完，开发机重连后用 --follow 拿结果。
+set -euo pipefail
+
+# 包在函数里：update.sh 会 git reset，运行中替换本文件，bash 先读完函数再执行，不受影响
+main() {
+  cd "$(dirname "$0")/.."
+  local state=/var/tmp/iot_sim-update
+  # state.sha：这次部署的提交  state.pid：后台进程  state.log：输出  state.exit：update.sh 的退出码（跑完才有）
+
+  if [[ ${1:-} == --follow ]]; then
+    local sha=${2:?用法：deploy/update-bg.sh --follow <提交号>}
+    if [[ $(cat $state.sha 2>/dev/null || true) != "$sha" ]]; then
+      echo "服务器上没有 $sha 的部署记录（还没开始）"
+      exit 75
+    fi
+    follow
+  fi
+
+  local sha=${1:?用法：deploy/update-bg.sh <提交号> [--prebuilt]}
+
+  # 上一次还在跑（比如它的 SSH 断了、又推了新的）就等它跑完，两次 compose up 不能同时跑
+  local old
+  old=$(cat $state.pid 2>/dev/null || true)
+  if [[ -n $old ]] && kill -0 "$old" 2>/dev/null; then
+    echo "== 上一次部署（$(cat $state.sha 2>/dev/null)）还在跑，等它结束"
+    while kill -0 "$old" 2>/dev/null; do sleep 2; done
+  fi
+
+  rm -f $state.pid $state.exit
+  echo "$sha" >$state.sha
+  # 后台进程自己写 pid（$$），保证记下的就是会写退出码的那个进程
+  setsid bash -c 'echo $$ >"$0.pid"; deploy/update.sh "$@"; echo $? >"$0.exit"' \
+    "$state" "$@" >$state.log 2>&1 </dev/null &
+  for _ in $(seq 50); do [[ -s $state.pid ]] && break; sleep 0.1; done
+  follow
+}
+
+follow() {
+  local pid code
+  pid=$(cat $state.pid 2>/dev/null || true)
+  if [[ -n $pid ]]; then
+    # update 进程结束后 tail 自己退出
+    tail -n +1 -f --pid="$pid" $state.log
+  else
+    cat $state.log 2>/dev/null || true
+  fi
+  code=$(cat $state.exit 2>/dev/null || true)
+  if [[ -z $code ]]; then
+    echo "== 部署进程意外结束，没有留下退出码，看看 docker compose ps"
+    exit 1
+  fi
+  exit "$code"
+}
+
+main "$@"

deploy/update.sh

@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+# 在服务器上执行：拉取代码、构建镜像、重启，等到编译服务就绪才算成功。
+# 用法：deploy/update.sh [提交号，默认 origin/main] [--prebuilt]
+#
+#   不带 --prebuilt：服务器自己编（只要有 docker 就能跑，不依赖开发机；2 核编一次约一分钟，期间学生程序会卡）。
+#                    GitHub 上手动触发的备用部署、登录服务器手动部署都走这条。
+#   --prebuilt：     用 prebuilt/ 里现成的产物，镜像构建只剩几条 COPY。push origin 后开发机上的 gitea-runner
+#                    编好、测过、rsync 过来再调用（.gitea/workflows/deploy.yml）。prebuilt/COMMIT 必须就是要部署的提交，
+#                    对不上说明产物不是这次编的，直接失败，不会把旧产物配新代码。
+#
+# 第一次部署前，按 deploy/README.md 在服务器上克隆仓库、准备好 .env
+set -euo pipefail
+
+# 整个脚本包在函数里：git reset 会在运行中替换本文件，bash 先读完函数再执行，不受影响
+main() {
+  cd "$(dirname "$0")/.."
+  local ref=origin/main prebuilt=0 arg
+  for arg in "$@"; do
+    case "$arg" in
+      --prebuilt) prebuilt=1 ;;
+      -*) echo "未知参数：$arg（可用：--prebuilt）" >&2; exit 2 ;;
+      *) ref=$arg ;;
+    esac
+  done
+
+  if [[ ! -f .env ]]; then
+    echo '还没有 .env：cp .env.example .env 后设置 TEACHER_PASSWORD'
+    exit 1
+  fi
+
+  echo "== 拉取代码"
+  # 代码从 origin（git.xuyue.cc）拉取。GitHub 上手动触发时，这个提交可能还没推到 origin，多等一会儿
+  for attempt in $(seq 10); do
+    git fetch --quiet origin
+    if git rev-parse --quiet --verify "$ref^{commit}" >/dev/null; then break; fi
+    if [[ $attempt == 10 ]]; then
+      echo "origin 上没有 $ref：先 git push origin main，再重新运行部署"
+      exit 1
+    fi
+    echo "origin 上还没有 $ref，10 秒后重试"
+    sleep 10
+  done
+  # 服务器上不改代码，配置都在 .env（不进 git，不受影响）
+  git checkout --quiet -B main
+  git reset --quiet --hard "$ref"
+  git log --oneline -1
+
+  if [[ $prebuilt == 1 ]]; then
+    local head built
+    head=$(git rev-parse HEAD)
+    built=$(cat prebuilt/COMMIT 2>/dev/null || true)
+    if [[ $built != "$head" ]]; then
+      echo "prebuilt/ 里的产物是 ${built:-（没有）} 编的，要部署的是 $head。"
+      echo '重新跑一次开发机上的部署，或者去掉 --prebuilt 让服务器自己编'
+      exit 1
+    fi
+    for f in prebuilt/runtime/Sim.Runner.dll prebuilt/web/index.html prebuilt/server.js; do
+      [[ -e $f ]] || { echo "prebuilt/ 不完整，缺 $f"; exit 1; }
+    done
+    export ARTIFACTS=prebuilt
+    echo "== 用开发机编好的产物（$(du -sh prebuilt | cut -f1)）"
+  else
+    export ARTIFACTS=build
+  fi
+
+  echo "== 构建镜像并重启"
+  # caddy 用的是现成镜像，up 不会去拉新版，不拉的话永远是第一次部署时那份
+  docker compose pull --quiet caddy
+  docker compose up -d --build --remove-orphans
+  docker image prune -f >/dev/null
+
+  # 等编译服务就绪；沙箱自检失败时部署失败
+  for _ in $(seq 60); do
+    logs=$(docker compose logs app 2>&1)
+    if grep -q '沙箱（bubblewrap）无法启动' <<<"$logs"; then
+      echo "$logs" | tail -5
+      exit 1
+    fi
+    if grep -q 'C# 编译服务已就绪' <<<"$logs"; then
+      echo '== 部署成功'
+      exit 0
+    fi
+    sleep 2
+  done
+  echo '== 120 秒内没有启动完成'
+  docker compose logs --tail 20 app
+  exit 1
+}
+
+main "$@"

docs/设计方案.md

@@ -0,0 +1,374 @@
+# 物联网 C# 虚拟仿真教学平台设计方案
+
+> 本文件是设计方案的正式版本，随代码一起维护。最初在 Claude Docs 中讨论定稿（2026-10-20），2026-10-22 迁入仓库，并按第 0、1 阶段的实际实现更新。
+
+## 项目定位与教学目标
+
+这是一门面向中职学生的 **C# WinForms 界面与事件编程课**的在线仿真平台，物联网场景是让学生程序"看得见效果"的舞台。
+
+- **学什么**：窗体、控件、属性、事件、Timer、条件判断、方法与类等界面编程知识。核心是"事件驱动"的思维：程序等待事情发生（点按钮、定时器到点、传感器报警），再做出反应。
+- **教材**：《物联网编程与应用（第 2 版）》，以智慧校园为主线的 8 个项目。平台兼容教材的设备类库，教材代码原样可运行。
+- **不学什么**：通信协议、报文、CRC，以及 ADAM-4150 / 4017+ 等硬件模块的底层细节。
+- **效果**：学生写的程序能控制一个生动的智慧校园场景，比如 LED 屏显示文字、路灯亮起、有人闯入报警、烟雾告警，并能实时看到反馈。
+- **使用方式**：纯网页，学生不安装任何软件；只给本校使用，同时在线约一两个班。
+
+## 已确定的关键决策
+
+| 事项                | 决定                                                                                                                                                  | 理由                                                                     |
+| ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
+| 学生编程语言        | C#                                                                                                                                                    | 课程要求                                                                 |
+| 课程方向            | 上位机：WinForms 界面 + 事件                                                                                                                          | 教学重点是界面和事件，不是协议                                           |
+| 教材                | 《物联网编程与应用（第 2 版）》及配套资料                                                                                                             | 现用教材                                                                 |
+| 实验模板与参考答案  | 以书为准，修正书中错误；配套工程只作参考                                                                                                              | 学生手里拿的是书                                                         |
+| 评测分工            | 功能项自动评；命名、缩进自动提示；注释和界面美观由老师评；分值由老师设定                                                                              | 书上评价表只有指标，没有分值                                             |
+| 账号                | 老师只有一个账号（配置文件设定）；学生账号由老师上传 CSV 名单导入，密码由老师发放（可留空自动生成 6 位数字），学生不能改，老师能查看和重置            | 中职学生容易忘密码，老师能直接告诉学生                                   |
+| 实验起点            | 布置作业时老师选：空白工程（从界面做起）或界面已做好（只写代码）                                                                                      | 不同课时侧重点不同                                                       |
+| 评分反馈            | 提交后立即显示每个功能项是否通过和原因，截止前可以改了再交                                                                                            | 边做边学                                                                 |
+| AI 评阅             | DeepSeek Flash 给老师评分项（界面、注释、命名）出建议分和评语，加上自动评分就是建议的最终成绩；老师采纳（或修改后保存）才生效，学生在老师确认前看不到 | 减轻老师批改负担，成绩仍由老师负责；服务器在国内，用国内可合规使用的模型 |
+| 设备写法            | 兼容教材类库（DeviceCtrlHelper、Lamp / LED / Alarm 等控件）                                                                                           | 教材代码原样运行，老师不用改教案                                         |
+| 场景                | 智慧校园；先做虚拟实训台（照实训台布局图），校园街景后加                                                                                              | 和机房实物一一对应                                                       |
+| 数据库（项目 6、8） | 用 SQLite 模拟 SQL Server（仿冒 SqlClient）                                                                                                           | 不增加服务器负担                                                         |
+| 学生是否学协议      | 不学                                                                                                                                                  | 协议只是仿真内部实现                                                     |
+| 使用形式            | 纯网页，免安装                                                                                                                                        | 学生在机房和家里都能用                                                   |
+| 学生代码在哪运行    | 服务器（沙箱隔离）                                                                                                                                    | 只供本校一两个班同时使用；原生 .NET 多线程行为真实；浏览器轻量           |
+| 前端                | Vue 3 + Naive UI + Chart.js                                                                                                                           | 开发者熟悉 TypeScript 生态                                               |
+| 后端                | Bun + SQLite                                                                                                                                          | 一人开发，单机足够                                                       |
+| 部署                | 公网云服务器（2 核 8G，已备案）；HTTPS 由服务器上已有的 Nginx Proxy Manager 负责                                                                      | 本平台只在 Docker 网络里暴露 HTTP                                        |
+| 开发人力            | 一人                                                                                                                                                  | 范围和路线图按此控制                                                     |
+
+## 学生使用体验
+
+页面分为编辑和运行两种模式。编辑模式照着 Visual Studio 来做，学生以后换到真的 VS 上操作一致。
+
+**编辑模式**
+
+- 左侧工具箱：常用控件（Button、Label、TextBox、CheckBox、ComboBox、Timer 等），以及"物联网"分组（教材的 Lamp、LED、Alarm、ShowMsg 等设备控件）。
+- 中间「设计」和「代码」两个标签页：设计页拖放控件，窗体下方有组件栏（存放 Timer 和设备组件）；代码页用 Monaco 编辑 `Form1.cs`。
+- 右侧属性窗口和事件窗口：双击控件或事件，自动生成处理方法并跳到代码页。
+- `Form1.Designer.cs` 由设计器自动生成，可以打开查看。
+
+**运行模式**
+
+- 学生自己的窗体（Windows 风格）和虚拟实训台同时显示在页面上。
+- 实训台上可以互动：拖动滑块调节温度、湿度、光照，点击切换人体红外、烟雾、火焰、红外对射，立刻看到学生程序的反应。
+- 实训台的接线只看、不能改：鼠标移到设备上，标题栏写出整条线路（如"人体红外 → ADAM-4150 DI0 → 串口服务器 COM3"），接的通道和串口高亮；学生自己接线属于"物联网设备安装与调试"课，见路线图第 4 阶段。
+- 编译错误和运行异常用中文提示，并标出行号；书上常见的印刷错误（如 `True` 大写）给出针对性提示。
+
+**还原真实行为**：在后台线程里直接修改控件，会抛出和 VS 中按 F5 调试时一样的"线程间操作无效"异常；单选按钮、复选框、下拉框的事件顺序与真实 WinForms 一致。
+
+**教材要求的运行能力**：多窗体（`Show`、`Hide`、`Close`，项目 1 的登录程序就用到）；控制台输出面板（`Console.WriteLine`）；虚拟 COM 口（`SerialPort.GetPortNames()` 返回 COM2–COM5，对应实训台的四台设备，保留"选串口、点打开"的操作步骤；串口要选对，见"设备类库设计"的接线）。
+
+**导入 VS 工程、导出 EXE 和 VS 工程**：设计器能读懂 VS 生成的 `Designer.cs`，教材配套的 19 个参考工程可直接导入，作为初始模板和参考答案。学生作品能导出成一个 exe（实验页工具栏"导出 EXE"），在机房电脑上双击运行，控制真的实训台：服务器照教材工程（.NET Framework 4.5 窗体应用、真机版设备类库）编译学生的原始代码，教材 dll 嵌在 exe 里，不用另外拷文件；也能导出成教材那样的 VS 2012 工程（zip），在机房的 VS 里接着改。
+
+## 设备类库设计（兼容教材）
+
+平台提供与教材同名、同签名的仿真类库（API 已从配套 dll 和使用说明中完整整理），教材代码一字不改即可运行。教材自带的仿真版返回随机数；平台的数值由实训台场景控制，联动逻辑可以被确定地验证和评测。
+
+| 对象                                      | 主要成员                                                                                                 | 平台仿真行为                                                                                                                     |
+| ----------------------------------------- | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
+| `DeviceCtrlHelper.ledHelper`              | `OpenLedCom(串口)`、`SendLedString(文本)`                                                                | 成功时原样返回文本，并在实训台 LED 屏上滚动显示；未打开串口返回 `"Error:发送失败"`                                               |
+| `adam4017Helper`                          | `Open(串口)`、`SetData()`、`Close()`                                                                     | 返回 `ADAM4017ResModel`，温度、湿度、光照、气压、空气质量、CO2、风速为整数字符串，取自实训台滑块                                 |
+| `adam4150Helper`                          | `Open(串口)`、`SetData()`、`OnOff(DO, 开关)`、`Close()`                                                  | `SetData()` 返回人体红外、火焰、烟雾、红外对射四个 bool；`OnOff` 控制报警灯（DO0）、照明灯（DO1）、路灯（DO2）、插座（DO3、DO4） |
+| `zigBeeHelper`                            | `Open(串口)`、`OnOff(继电器, 开关)`、`Close()`                                                           | 控制 ZigBee 继电器；节点 1 接实训台照明灯 1（教材项目 3 的路灯）                                                                 |
+| `ipCameraHelper`（未实现）                | `Open(IP, 用户, 密码)`、`Start` / `Stop`、`PanUp` / `PanDown` / `PanLeft` / `PanRight`、`ImageRead` 事件 | 在后台线程定时推送画面；云台转动即在全景图上移动取景                                                                             |
+| 控件 `Lamp` / `Alarm` / `LED` / `ShowMsg` | `OnOff(bool)`、`setLedText(文本)`、`AddText(文本)`                                                       | 窗体上的图示控件（自绘图片，尺寸与教材控件一致）；LED 文字滚动。ShowMsg 尚未实现                                                 |
+
+教材代码示例（项目 2 任务 1，向 LED 屏发送信息）：
+
+```csharp
+private void btn_Open_Click(object sender, EventArgs e)
+{
+    DeviceCtrlHelper.ledHelper.OpenLedCom(com_Port.Text);
+}
+
+private void btn_Send_Click(object sender, EventArgs e)
+{
+    string res = DeviceCtrlHelper.ledHelper.SendLedString(txt_SendText.Text);
+    if (res.IndexOf("Error") >= 0)
+    {
+        MessageBox.Show(res);
+    }
+    else
+    {
+        led.setLedText(res);
+    }
+}
+```
+
+兼容细节：
+
+- 数值一律返回整数字符串（项目 7 用 `Convert.ToInt16` 转换）。
+- **串口要选对**（按实训台接线）：接线按教材布局图，ADAM-4017+、ADAM-4150 各经一个 485/232 转换器接串口服务器，即 COM2 4017+、COM3 4150、COM4 ZigBee 协调器、COM5 LED 屏（`shared/protocol.ts` 的 `DEFAULT_WIRING`）。实验可以在 `meta.json` 的 `wiring` 里改：项目 7 的书上代码在一个串口上打开两个模块（书上截图是用仿真版 dll 截的，选哪个口都行），这三个实验把 4150 并到 COM2 的 485 总线上（两个模块地址不同，真机上也能这样接）。
+- 在没接这台设备的串口上打开它，返回值照真机版 dll（已反编译核对）：`Open` 不报错；4017 的 `SetData()` 全是 null、4150 的全是 false；4150 的 `OnOff` 只管发命令、不等回应，返回 true 但继电器不动作；ZigBee 的 `OnOff` 收不到回应，返回 false；LED 的 `SendLedString` 原样返回文字但屏上不显示。真机上这只是"没反应"，平台另外在实训台最上方用红字提示"程序在 COM2 上打开 ADAM-4150，它接在 COM3"，评分不通过时也附上这句。
+- 串口没打开（或已经 `Close`）时程序还在读数据、控制设备：返回值照教材仿真版 dll（4150 的 `SetData()` 返回各项为 false 的对象，不是真机版的 null；书上代码是照仿真版写的，返回 null 会让学生看到一个指不出原因的空引用异常），实训台同样用红字提示"ADAM-4150 的串口没有打开，程序却在读写它（它接在 COM3）"，评分说明也附上。学生忘了点"打开"时一眼能看出原因。
+- 允许重复调用 `Open`（项目 7 任务 3 在定时器里每秒打开一次）。
+- 串口没有打开时，`OnOff` 控制无效、返回 false。教材仿真版不检查这一点，平台按实物行为处理：学生忘了"打开"，窗体上的灯会亮而实训台上的灯不亮，正好暴露问题。
+- 摄像头事件在非界面线程触发，与真实行为一致。
+
+## 系统架构
+
+学生代码在服务器上编译，并放进单独的进程运行；浏览器只负责显示和交互。三方之间只通过统一格式的 JSON 消息通信（定义见 `shared/protocol.ts`），以后如需改为在浏览器内运行，只替换 `runtime/` 即可。
+
+```mermaid
+flowchart TB
+  subgraph Browser["浏览器（Vue 3）"]
+    Editor["代码编辑器 / 窗体设计器"]
+    Forms["虚拟窗体<br/>按控件树渲染，用户操作发回服务器"]
+    Board["虚拟实训台<br/>滑块、开关调节环境；显示灯、LED 屏"]
+  end
+  subgraph Server["Bun 后端（Hono）"]
+    Session["会话<br/>每个浏览器一个，管理每次运行"]
+    BoardState["实训台状态<br/>传感器输入、继电器输出、LED 文字"]
+    Data["账号、班级、实验、评测（SQLite）"]
+  end
+  subgraph Runtime[".NET 10 运行时（运行进程在 bubblewrap 沙箱里）"]
+    Compiler["编译服务（Roslyn）<br/>全服务器共用一个常驻进程"]
+    Runner["运行进程（每次运行一个）<br/>仿真 WinForms + 教材设备类库"]
+  end
+  Browser <-->|WebSocket| Session
+  Session --- BoardState
+  Session -->|编译请求| Compiler
+  Session <-->|标准输入输出，每行一条 JSON| Runner
+```
+
+数据流：
+
+- 学生点"运行"：服务器把工程写到临时目录，编译服务编译出程序集，再启动一个运行进程。
+- 学生在窗体上操作：浏览器只上报"用户做了什么"（点击、输入、下拉），由运行进程按真实 WinForms 的顺序触发事件，再把控件属性变化发回浏览器。
+- 学生拖动实训台滑块：服务器更新实训台状态，推给运行进程；学生程序的 `SetData()` 直接读本地副本，不需要网络往返。
+- 学生程序控制灯和继电器：运行进程报告给服务器，服务器更新实训台状态并推给浏览器。
+
+**目录结构**
+
+```
+IOT/
+├─ web/        Vue 前端：编辑器、虚拟窗体、虚拟实训台
+├─ server/     Bun 后端：示例接口、会话、实训台状态、编译服务和运行进程的调度
+├─ runtime/    .NET：仿真 WinForms（Sim.WinForms）、教材设备类库（Sim.Devices）、运行器（Sim.Runner）
+├─ shared/     消息协议定义（TS 类型；C# 端对应实现在 Sim.WinForms/Host）
+├─ samples/    示例工程，按教材任务整理
+└─ docs/       设计方案、教材逐任务摘要
+```
+
+## 技术栈
+
+网站主体用 TypeScript；只有编译和运行学生 C# 代码的部分用 .NET。标"计划"的尚未引入。
+
+| 层        | 用途                           | 选择                                                                                                                                                                                                                                                                                  |
+| --------- | ------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 前端      | 框架                           | Vue 3 + TypeScript + Vite                                                                                                                                                                                                                                                             |
+| 前端      | 状态管理 / 路由                | 计划：Pinia / Vue Router                                                                                                                                                                                                                                                              |
+| 前端      | 组件库（网站外壳）             | Naive UI                                                                                                                                                                                                                                                                              |
+| 前端      | 代码编辑器                     | Monaco Editor                                                                                                                                                                                                                                                                         |
+| 前端      | 窗体设计器、虚拟 WinForms 控件 | 自研（Vue 组件 + CSS，外观模仿 Windows）                                                                                                                                                                                                                                              |
+| 前端      | 虚拟实训台场景                 | HTML + CSS 动画                                                                                                                                                                                                                                                                       |
+| 前端      | 图表                           | 计划：Chart.js                                                                                                                                                                                                                                                                        |
+| 前端      | 实时通信                       | 浏览器原生 WebSocket                                                                                                                                                                                                                                                                  |
+| 后端      | 运行时                         | Bun                                                                                                                                                                                                                                                                                   |
+| 后端      | Web 框架                       | Hono                                                                                                                                                                                                                                                                                  |
+| 后端      | 数据库                         | SQLite（`bun:sqlite`，WAL），直接写 SQL；表结构用编号迁移（`server/src/db.ts`）。数据量小，不引入 ORM                                                                                                                                                                                 |
+| 后端      | 登录                           | 计划：Cookie 会话 + `Bun.password`                                                                                                                                                                                                                                                    |
+| 后端      | 参数校验                       | 计划：Zod                                                                                                                                                                                                                                                                             |
+| C# 运行时 | 平台                           | .NET 10 LTS                                                                                                                                                                                                                                                                           |
+| C# 运行时 | 编译                           | Roslyn，常驻编译服务，内存编译，中文报错；编译时改写旧版线程 API（Suspend / Resume / Abort）                                                                                                                                                                                          |
+| C# 运行时 | 数据库                         | 仿冒 System.Data.SqlClient（`Sim.Data`）：Microsoft.Data.Sqlite + ScriptDom（T-SQL 解析）；常驻 SQL 服务供数据库页面使用                                                                                                                                                              |
+| C# 运行时 | 运行器                         | .NET 控制台程序，模拟界面线程和消息循环                                                                                                                                                                                                                                               |
+| C# 运行时 | 仿真类库                       | 自研：`System.Windows.Forms` 子集 + 教材设备类库 + `Font` 等少量 System.Drawing 类型                                                                                                                                                                                                  |
+| C# 运行时 | 数据库仿真                     | 计划：仿冒 `System.Data.SqlClient`，底层 Microsoft.Data.Sqlite；T-SQL 用 ScriptDom 解析后转写                                                                                                                                                                                         |
+| C# 运行时 | 图片编解码（如需）             | 计划：SkiaSharp                                                                                                                                                                                                                                                                       |
+| C# 运行时 | 语言服务                       | Roslyn `CompletionService`、`QuickInfoService`（和 VS 的 IntelliSense 同一套引擎），参数提示用语义模型自己实现；常驻进程 `language-server`，和编译服务分开                                                                                                                            |
+| 工程      | 仓库                           | Bun workspaces 单仓库                                                                                                                                                                                                                                                                 |
+| 工程      | 测试                           | `bun test`（端到端、单元、压力测试）；计划：用教材参考工程做回归测试、Playwright                                                                                                                                                                                                      |
+| 部署      | 服务器                         | 一台 Linux 云服务器，2 核 8 GB                                                                                                                                                                                                                                                        |
+| 部署      | 沙箱                           | bubblewrap：每次运行一个独立命名空间（断网、只读、看不到其他进程），加 .NET 堆上限、CPU 时间上限                                                                                                                                                                                      |
+| 部署      | HTTPS                          | Nginx Proxy Manager（服务器上已有），经外部网络 `npm_proxy` 转发                                                                                                                                                                                                                      |
+| 部署      | 反向代理 / 压缩                | Caddy（只收 HTTP），网页文件由 Bun 直接提供                                                                                                                                                                                                                                           |
+| 部署      | 进程管理                       | Docker Compose；push origin 后开发机上的 gitea-runner 测试、编好产物（运行时 dll、网页、server.js）rsync 到服务器，服务器从 git.xuyue.cc 拉代码、用现成产物构建镜像（`deploy/update.sh --prebuilt`）。服务器只有 2 核，不在上面编；不从国外传镜像：跨境上传 130 MB 镜像 40 分钟传不完 |
+| 部署      | 备份                           | 计划：定时 `sqlite3 .backup` + 异地拷贝                                                                                                                                                                                                                                               |
+
+## 安全与服务器资源
+
+在公网上运行学生代码，必须做三层防护；第 0 阶段实测，100 个学生程序同时运行合计约 1.1 GB 内存。
+
+**安全措施**（已完成）
+
+1. **沙箱隔离**：每次运行用 bubblewrap 放进独立的命名空间：断网，只能看到系统只读文件、运行时程序和自己的工程目录（只读），/tmp 是独立内存盘，看不到其他进程，不继承服务器的环境变量。另外限制托管堆 128 MB、累计 CPU 时间 120 秒（防死循环占满 CPU）、运行时长 60 分钟，降低优先级（nice 10），全站同时运行上限 150 个。整个平台再放在 Docker 容器里：文件系统只读、去掉全部 capabilities、限制内存和进程数。服务器启动时自检沙箱，不可用时拒绝运行学生代码。
+   - 没有选"每次运行一个 Docker 容器"：每次多 0.3–0.5 秒，而且应用要能操作 Docker 守护进程，这本身权限过大。代价是应用容器要放开 seccomp / AppArmor，才能让 bubblewrap 创建命名空间。
+2. **编译检查**：网络（System.Net）、反射（System.Reflection，AssemblyInfo.cs 里的特性除外）、启动其他程序（Process）、调用本机代码（DllImport、Marshal）、加载程序集、进程间通信、dynamic，编译时直接给出中文报错（SIM001）。文件读写由沙箱限制，不在编译时禁止（项目 7、8 要读图片）。
+3. **账号管控**：不开放注册，老师上传名单批量创建学生账号；所有接口和运行程序的 WebSocket 都要先登录；按 IP 限制输错次数。登录用访问令牌（JWT，15 分钟，放在 Authorization 请求头里；WebSocket 放在网址参数里）+ 刷新令牌（30 天，每次刷新换新的，数据库只存哈希，退出登录即作废）；重置密码、删除学生时用户的令牌版本加一，所有设备立即退出。学生密码由老师发放、老师可查看，按原样保存（有意的取舍）。
+
+**资源估算**
+
+- 编译器做成常驻进程，全服务器共用一个，约占 150 MB；学生程序运行时不加载编译器。
+- 每个运行中的学生程序平均约 11 MB（按 PSS 计，共享的 .NET 运行库按进程数平摊；单看 RSS 约 47 MB）。
+- 每个学生同时只运行一个程序，闲置超时自动结束。
+- 两个班约 100 人同时运行，合计约 1.3 GB；8 GB 内存有充足余量。
+- 2026-10-22 复测（Docker 容器限制为 2 核，加 bubblewrap 沙箱）：50 人同一瞬间点"运行"，4.4 秒内全部显示窗体（中位 2.3 秒），容器共 643 MB；100 人 8.4 秒（中位 4.1 秒），1.1 GB。瓶颈是 CPU（编译和启动），实际上课时点击会分散开。
+- SQLite 开启 WAL 模式，定时备份。
+
+## 实验规划
+
+实验直接对应教材的 8 个项目，平台按项目顺序逐步补齐所需能力。下表依据配套 PPT、19 个参考工程和整本教材整理；项目 1–3 只需约 10 种控件、不涉及线程和数据库。
+
+| 项目          | 教材内容                                                                   | 平台需要支持                                                                     | 状态   |
+| ------------- | -------------------------------------------------------------------------- | -------------------------------------------------------------------------------- | ------ |
+| 1 C# 入门基础 | 登录与新增用户（两个窗体）、计算器、继承与多态演示                         | 多窗体、Label、TextBox（PasswordChar）、Button、ComboBox、MessageBox、控制台输出 | 已完成 |
+| 2 环境监测    | LED 屏推送文字；4017 采集温湿度和光照；采集后推送 LED                      | LED 控件、ledHelper、adam4017Helper、GroupBox、虚拟 COM 口                       | 已完成 |
+| 3 智慧路灯    | ZigBee 开关路灯；人体红外每 5 秒检测并联动路灯                             | Lamp 控件、zigBeeHelper、adam4150Helper、CheckBox、RadioButton、Timer            | 已完成 |
+| 4 入侵监测    | 红外对射检测；网络摄像机画面与云台；报警灯                                 | PictureBox、摄像头仿真、Alarm 控件、图片保存                                     | 已完成 |
+| 5 灾情监测    | 火焰（Timer）、烟雾（Thread）、灾情记录与推送                              | Thread（含 Suspend / Resume / Abort）、跨线程改界面、ListBox、FormClosing        | 已完成 |
+| 6 数据存储    | 建库建表、采集入库与增删改、按时间段查询                                   | SQL 窗口（代替 SSMS）、SqlClient 仿冒（SQLite）、DataGridView、DateTimePicker    | 已完成 |
+| 7 情景控制    | 智慧教室、寝室、会议室三种情景联动                                         | TrackBar、资源图片、PictureBox 当按钮、mp3 播放、虚拟时钟                        | 已完成 |
+| 8 管理平台    | 主界面、校园环境（自动控制、7 天温度图表）、校园安防（抓拍入库、历史图片） | Panel Dock、无边框窗体、透明背景、Chart、ShowDialog、图片存数据库                | 已完成 |
+
+每个实验以数据形式存放（目前在 `samples/`，以后迁到 `content/`），由以下部分组成：
+
+- **任务说明**：对应书上的任务描述和步骤，控件名以书为准。
+- **参考答案**：修正后的书本代码（修正编译错误和逻辑错误，如 INSERT 列错位、漏写 `new DataSet()`、项目 7 开灯判断写反）。
+- **常见错误提示**：学生照抄书上的错误（如 `True` / `False` 大写、`Catch(EventArgs ex)`）时给出针对性中文提示。
+- **评测规则**：书上评价表的功能项转为自动检查，如"把光照调到 300，2 秒内照明灯应打开"。
+- **扩展练习**：书上"边想边做"和"自主探究"约 30 道，其中十余道是填空代码题，可直接做成填空练习。
+- **场景配置**：初始环境值、设备接在哪个串口（`meta.json` 的 `wiring`，已实现）、传感器与通道的对应关系、虚拟时钟起始时刻、预置数据表和样例数据。
+
+老师不写代码也能修改或新增实验。
+
+## 开发路线图
+
+各阶段时长按一人兼职估算，会随实际进度调整。
+
+```mermaid
+flowchart TB
+  P0["阶段 0 · 技术验证（已完成 2026-10-22）<br/>教材项目 2 任务 1 原样运行；实测编译、延迟、内存"]
+  P1["阶段 1 · MVP（已完成 2026-10-22）<br/>虚拟实训台 ✔、代码编辑器 ✔、窗体设计器 ✔、多窗体 ✔<br/>教材示例：项目 1–3 全部 ✔，项目 4–5 中平台已支持的 3 个任务 ✔<br/>部署（沙箱、Docker Compose、GitHub Actions）✔"]
+  P2["阶段 2 · 教学闭环（功能已完成，待一个班试用）<br/>账号与班级 ✔、作品保存在服务器 ✔、自动评分 ✔、布置与提交作业 ✔<br/>评阅（看代码、运行、老师评分、评语）✔、成绩表与导出 ✔<br/>一个班试用（2026-10-26 已部署上线，待试用）"]
+  P3["阶段 3 · 扩展（功能已完成 2026-10-23）<br/>教材项目 4–8：摄像头 ✔、线程 ✔、SQLite 模拟数据库 ✔、虚拟时钟 ✔、图表 ✔<br/>教材 8 个项目共 23 个示例 ✔、任务说明 ✔"]
+  P4["阶段 4 · 进阶（之后）<br/>校园街景场景、故障注入题库<br/>可能扩展：物联网设备安装与调试课（学生自己接线、配置设备、排故）"]
+  P0 -->|"关口：链路跑通，延迟和资源占用可接受"| P1
+  P1 -->|"关口：教材项目 1–3 能在平台上完整做完"| P2
+  P2 -->|"关口：一个班试用顺利"| P3
+  P3 --> P4
+```
+
+并行事项：尽早办理 ICP 备案（需数周）。
+
+**当前状态（2026-10-26）**：第 1–3 阶段的功能已全部完成，平台已部署到线上服务器（GitHub Actions 自动部署）。下一步是第 2 阶段的关口：带一个班试用，按试用中暴露的问题修改，之后再考虑第 4 阶段。
+
+**可能的扩展：物联网设备安装与调试课**（2026-10-28 讨论，还没定开不开）。那门课的核心是接线（传感器信号线、电源、485 的 A/B 线）、用厂家工具配置设备（ADAM 地址、波特率、4017+ 量程，ZigBee 网络号）、用串口调试助手收发报文、排故，和本课"不学协议、不接线"正好相反。仿真替代不了拧螺丝，但适合预习、在家练、接错不烧设备，尤其是老师设故障让学生找的**排故练习**（和"故障注入题库"是一回事）。现在为它做的准备是把接线做成数据（`BoardState.wiring`），本课用实验预设的接线、只读显示；将来那门课在同一份数据上让学生改接线，再加上通道接线、电源、配置工具。开工前要先拿到那门课的教材和实训台资料。
+
+**第 0 阶段结果（2026-10-22，已完成）**：教材项目 2 任务 1 的书上代码一字未改，在网页中完整运行：选串口、打开、推送文字到 LED 屏，未打开串口时弹出 "Error:发送失败"。本机实测（16 核、28 GB）：
+
+| 指标                   | 结果                                                 |
+| ---------------------- | ---------------------------------------------------- |
+| 编译（编译服务预热后） | 10–300 ms                                            |
+| 点"运行"到窗体出现     | 约 100 ms                                            |
+| 单次操作往返           | 约 15 ms                                             |
+| 100 个程序同时运行     | 合计约 1.1 GB，平均每个 11 MB，另加编译服务约 150 MB |
+| 100 个程序同时点击     | 往返中位数约 60 ms，P95 约 75 ms                     |
+
+验证中的调整：第一版每个运行进程都加载 Roslyn，单个约 170 MB；改为常驻编译服务后，运行进程不再加载编译器，编译也从约 0.9 s 降到几十毫秒。接入沙箱后在 2 核环境下的复测见上文"资源估算"。
+
+**第 1 阶段进展**：
+
+- 2026-10-22：虚拟实训台（服务器统一保存状态，网页调节环境）；CheckBox、RadioButton、Lamp、Alarm；教材项目 2、3 共 5 个任务的示例全部跑通。
+- 2026-10-22：代码编辑器换成 Monaco：C# 语法高亮；编译错误以波浪线标在代码里，点错误信息跳到对应行；F5 运行、Shift+F5 停止（在整个页面生效，并阻止浏览器 F5 刷新）；改过的代码自动保存在浏览器本地，可一键恢复原始代码。前端打包后 JS + CSS 压缩约 1.2 MB。
+- 2026-10-22：窗体设计器：工具箱拖放或双击添加控件，选中、拖动、改大小、拖进拖出分组框，Delete 删除、方向键微调；属性窗口和事件窗口；双击控件或事件生成事件处理方法并跳到代码；Timer 等组件显示在组件栏。Designer.cs 在浏览器端直接解析和生成：未改动的语句保留原文，教材 25 个参考窗体和全部示例读入再写出逐字节不变；布局语句（SuspendLayout / ResumeLayout / PerformLayout）的增删规则与 VS 一致。
+- 2026-10-22：设计器撤销 / 重做（撤销"生成事件处理方法"时连同插入的方法一起撤掉，不覆盖学生已写的代码）；工具箱、属性、事件窗口全部显示中文，英文名放在悬停提示里；支持中文的控件名和类名。
+- 2026-10-22：多窗体：新建窗体（与 VS 新建窗体相同的两个文件，沿用工程命名空间）、删除窗体（启动窗体不能删）；标签页按窗体分组；运行时点哪个窗口哪个到最前。新增示例：项目 1 任务 1 登录与增加用户（两个窗体的 Designer.cs 由设计器引擎生成）。
+- 2026-10-22：整理教材示例：项目 1 任务 2（计算器、多态）、项目 4 任务 1（红外对射）、项目 4 任务 3（报警灯）、项目 5 任务 1（火焰）。界面取自配套参考工程，用设计器引擎按书上的控件名改名。至此 10 个示例，全部有"能编译"检查和端到端行为测试。项目 4–8 其余任务需要的能力（摄像头、线程 API、ListBox、数据库、TrackBar、PictureBox、图表）放到第 3 阶段。
+- 2026-10-22：虚拟实训台按自身宽度自适应排列，可以收起成一行状态（传感器开关仍可点），给窗体显示区腾地方。
+- 2026-10-22：部署：学生程序放进 bubblewrap 沙箱（断网、只读、看不到其他进程和服务器环境变量；限制堆内存、CPU 时间、运行时长，全站并发上限）；编译检查禁止网络、反射、启动进程等 API；访问口令；Bun 直接提供打包好的网页；Dockerfile + Docker Compose（Caddy 接入 NPM 的 npm_proxy 网络）+ 部署脚本，本机按服务器配置（2 核）完整验证。
+
+**第 2 阶段进展**：
+
+- 2026-10-22：账号与班级：老师账号由配置设定；老师建班、上传 CSV 名单导入学生（兼容 Excel 导出的 GBK 和 UTF-8，识别表头，发现被 Excel 变成科学计数法的学号），查看、重置密码，导出带密码的名单（Excel 打开不乱码）；登录页取代原来的统一访问口令；登录用访问令牌（JWT）+ 刷新令牌，不用 cookie。学生的作品自动保存在服务器上（按账号和实验），换电脑登录可以接着做；页面上显示保存状态。
+- 2026-10-22：自动评分：每个示例一份 `checks.yaml`（共 23 项，由书上评价表的功能项转来）；引擎在沙箱里每项单独启动一次学生程序，按书上的控件名操作、调节实训台、核对结果，不通过时写明期望和实际。参考答案全部通过，几种典型错误各自报出对应原因。
+- 2026-10-22：布置与提交作业：老师选实验、起点（界面已做好 / 空白工程，起点工程由设计器引擎从参考答案生成）、截止时间和每项分值（自动评分项 + 老师评分项）；布置时保存起点和评分规则的快照。学生在"我的作业"里打开作业，提交后排队评分（全站同时最多评 3 份、跑 6 个检查项），结果立即可见；截止后不能再交。老师看全班的提交情况和自动得分。
+- 2026-10-22：评阅与成绩：评阅页左边是全班学生（提交状态、得分、是否已评阅），右边是选中学生的代码（只读）、自动评分结果、规范提示（代码里用到却还是默认名字的控件、注释行数）和老师评分项打分、评语，可以"保存并看下一个"；"运行他的程序"在新标签页的实验页里打开学生的提交（可以操作实训台，改动不保存）。学生能看到老师的各项得分和评语。班级管理页加"成绩"标签页：学生 × 作业的总分（自动评分 + 老师评分），点分数进入评阅；单个作业和全班成绩都能导出 CSV（Excel 打开不乱码）。
+
+**第 3 阶段进展**：
+
+- 2026-10-22：项目 5 补齐（线程、ListBox）。旧版线程 API：编译时把 `thd.Suspend()` / `Resume()` / `Abort()`、`thd.ThreadState`、`Thread.Sleep`、`new Thread(...)` 改写成平台实现（只改语义上确实是 `System.Threading.Thread` 的调用，不换行，报错和异常的行号不变；编辑器里看到的仍是学生的原始代码，也不再提示"已过时"）。新版 .NET 不能从外部停住线程，平台的实现是协作式的：被挂起或终止的线程在下一个检查点停下或结束（`Thread.Sleep`、从后台线程改控件属性、调用设备类库、弹出提示框），教材的线程方法每次循环都经过这些地方；休眠中被终止的线程立即醒来结束。行为与 .NET Framework 一致的地方：线程可以挂起自己、对没启动的线程 Abort 不报错、`Resume` 没挂起的线程和直接 `Abort` 挂起的线程抛出 ThreadStateException（书上任务 2 关闭窗体时直接 `thd.Abort()`，在真实环境中也会出这个错，参考答案改为先 `Resume` 再 `Abort`，报错信息里写明这样改）。ListBox：列表项、单选、SelectedIndexChanged 先于 Click、Text 是选中项、删除选中项后取消选中；设计器工具箱加"列表框"；评分规则的"包含"对列表框检查所有列表项。新增示例：项目 5 任务 2（烟雾，线程）、任务 3（推送灾情，二维数组、两个窗体、ListBox），各有评分规则和端到端测试，共 12 个示例。
+
+- 2026-10-22：项目 4 任务 2 网络摄像机，至此教材项目 1–5 全部完成（13 个示例）。摄像头画面是自绘的扁平插画（`runtime/Sim.Devices/Camera/scene.svg`，从校园里望向东围墙，墙头装着红外对射），按云台位置（左右 7 档、上下 3 档）切成 640×480 的 JPEG 帧；`PanUp` 等每次转一格，实训台红外对射被遮挡时画面里出现翻墙的人、光束断开，为书上"发现入侵自动抓拍"的探究题准备。`ipCameraHelper` 的类名、委托名（`CameraImage`）、事件参数（`ImageReadEvenArgs.img`）与教材 dll 一致，和仿真版一样每 250 ms 在后台线程上触发 `ImageRead`，书上不用 Invoke 直接给 `pictureBox1.Image` 赋值也能显示。`Image` / `Bitmap` 保存真实的图片数据：`Image.Save` 写出能打开的 jpg，`FromFile` / `FromStream` 读回，文件夹不存在时和 GDI+ 一样报"一般性错误"。图片数据每张只发给浏览器一次（按内容哈希缓存），之后控件属性里只带编号；同一位置的画面复用同一个对象，画面不变时不产生消息。学生程序的"程序所在目录"（`AppDomain.CurrentDomain.BaseDirectory`，编译检查单独放行）和当前目录都指向可写的 bin/Debug（沙箱里在沙箱自己的临时目录），程序结束后清掉；`Image.Save` 保存的图片显示在运行区的照片列表里，点开看大图，下次运行时清空。新增 PictureBox（SizeMode 五种、BorderStyle），设计器工具箱加"图片框"；评分规则加"图片框显示了图片""摄像头开启 / 关闭 / 朝某方向转过""保存了图片"三种检查。
+
+- 2026-10-23：项目 6 数据存储（3 个任务）。**每个学生一套数据库，长期保存**（`data/databases/<用户编号>/库名.db`，每个库一个 SQLite 文件，最多 20 个库、每个约 50 MB），就像自己电脑上的 SQL Server：任务 1 建的库、任务 2 存的数据，任务 3 能查到。
+  - **SqlClient 仿冒**（`runtime/Sim.Data`）：SqlConnection / SqlCommand / SqlDataReader / SqlDataAdapter / SqlCommandBuilder / SqlParameter，DataSet、DataTable、DataView 直接用 .NET 自带的。连接字符串只按 Initial Catalog 打开学生自己的同名库（服务器名、账号密码不检查，书上的长服务器名、"." 都能连上），库不存在时报 4060。
+  - **T-SQL 转写**：ScriptDom（SQL Server 2008 语法）解析后按白名单逐个节点转写成 SQLite 语句，不认识的语法报"平台暂不支持"，生成的 SQL 里只有平台写出的关键字和 tsql_ 函数。表用 STRICT 模式保存，原始的 T-SQL 列类型记在元数据表里，读出时还原成 SQL Server 返回的 .NET 类型（int、DateTime、bool……）；varchar(n) 超长、类型不对、NULL、重复主键都报和 SQL Server 一样的错误号和中文信息。`insert into 表 values (...)` 不写列名时跳过自增列（照书上写时值的顺序和列顺序不一致，数据会存进错的列，和真实情况一样）；日期统一存成 yyyy-MM-dd HH:mm:ss，书上拼接的 `DateTime.Now.ToString()`（2024/1/16 9:05:03）在插入和 BETWEEN 比较时都转换；支持 TOP（含 UPDATE / DELETE TOP）、CONVERT 样式 120 等、year / getdate / dateadd / datediff、`+` 按类型连接或相加、参数化查询、@@IDENTITY、多条语句。SqlCommandBuilder 根据带中文别名的查询生成 UPDATE。
+  - **DataGridView**：绑定 DataView / DataTable / DataSet，自动生成列；在单元格里修改的值写回 DataTable，配合 SqlDataAdapter.Update 保存；当前行 ▶、新增行 *、选中行、CurrentRow.Cells[0].Value；类型转换失败时和 WinForms 一样触发 DataError。**DateTimePicker**：Long / Short / Time / Custom 格式与中文 Windows 一致，弹出浏览器的日期选择框。设计器工具箱加"数据表格""日期时间选择器"。
+  - **数据库页面**（代替 SSMS，`/database`）：对象资源管理器（只有库 → 表两层，比 SSMS 简单：“+ 新建库”“+ 新建表”，点表名编辑前 200 行，⋯ 和右键是同一个菜单：查询前 1000 行、设计表结构、删除；鼠标停在表名上显示列）；查询窗口（F5 执行、选中部分只执行选中的、USE 切换库，结果网格和消息栏的格式与 SSMS 一致，每批最多 5 秒）；编辑前 200 行（改单元格即 UPDATE、* 行新增、右键删除，没有主键的表按所有列的原值定位）；表设计器（列名、类型、允许 Null、右键设主键、标识列，"查看 SQL 脚本"显示对应的 CREATE TABLE）；"恢复实验初始数据"按实验的 `database.sql` 替换实验用到的库，其他库不动。这些操作都生成 T-SQL 交给常驻的 SQL 服务执行，和学生程序走同一套转写。
+  - **评分**：每个实验可以带 `database.sql`，评分时每个检查项用一份新建的实验库，不碰学生自己的数据；评分规则加"点 / 修改表格单元格""在日期时间选择器里选日期""表格里有 / 没有某行"。新增示例项目 6 任务 2、3（任务 1 在数据库页面上完成），共 15 个。
+  - 实测：用到数据库的学生程序比不用的多约 11 MB 内存（PSS 17 → 28 MB）。另外修正了平台上的时间格式：Linux 的中文区域数据是 09:05:03，改成和中文 Windows 一样的 9:05:03。
+
+- 2026-10-23：项目 7 情景控制（3 个任务），共 18 个示例。
+  - **虚拟时钟**：实训台加时钟面板，默认真实时间，可以拨到任意日期时刻、选 1×/10×/60× 倍速、一键恢复真实时间；时钟状态由服务器保存（`BoardState.clock`），运行器按它算当前时间。编译时把学生代码里的 `DateTime.Now / Today / UtcNow` 改写成 `SimClock`（和线程 API 的改写一样不换行、编辑器里看到的是原代码）。任务 2 按 6:45 起床、7:30 上课、21:00 回寝、22:00 熄灯切换，任务 3 按预约时刻开启，都靠它来测试。评分规则加 `clock` 步骤（拨到今天的某个时刻，可设倍速）。
+  - **项目资源**（`Properties.Resources`）：只用平台素材库（自绘的开关图片、ffmpeg 合成的门铃声，名字和教材一致，`runtime/Sim.WinForms/Resources/gallery`）。实验页"项目资源"对话框勾选素材（图片看缩略图、声音可试听），平台生成 `Properties/Resources.Designer.cs`（图片是 Bitmap、声音是 byte[]，用法和 VS 的强类型资源类一样，不在标签页里显示）；设计器里图片框的"图片"属性可以从项目资源里选，写进 Designer.cs 的是 `global::命名空间.Properties.Resources.名字`，预览直接显示素材。学生程序的程序目录下有 Resources 文件夹指向素材库（书上用 `BaseDirectory + "//Resources//ring.mp3"`）。没添加资源就用时给中文提示。
+  - **Windows Media Player**（`AxWMPLib.AxWindowsMediaPlayer`）：设置 URL 后和真的一样自动播放，`Ctlcontrols.play() / stop()`；声音在浏览器里播放，实训台上加"广播"喇叭，播放时亮起。VS 为它生成的 `ComponentResourceManager(...).GetObject("…OcxState")`：编译时给每个窗体嵌一份空资源，取到 null 不报错。图片、声音数据统一按内容哈希缓存（`blob` 消息），每份只传一次。
+  - **TrackBar**：拖动、点轨道（LargeChange）、方向键（SmallChange），先 ValueChanged 再 Scroll，竖向时最小值在下面；设计器工具箱加"滑动条""媒体播放器"。评分规则加 `value`（滑动条的值）、`media`（播放了某个文件）检查。
+  - 示例：书上任务 1 手动开关灯的判断写反（参考工程是对的），任务 3 漏了填充串口列表，示例里都已改正；任务 3 的"每 5 分钟整点拍照"依赖定时器正好在 0 秒触发，自动评分不检查这一项，由老师评阅。编译检查修正：`System.AppDomain.CurrentDomain.BaseDirectory`（带命名空间）也放行。
+
+- 2026-10-23：项目 8 智慧校园管理平台（5 个任务，每个任务一个示例，代码逐个累加），至此教材 8 个项目全部完成，共 23 个示例。
+  - **新建类**：实验页"＋ 新建类"，可以带文件夹（`SQLHelpers/SQLBLL`），文件夹成为命名空间的一段，模板和 VS 2012 一样；可以删除自己建的类。
+  - **停靠布局**：Dock（上、下、左、右、填充）和 WinForms 一样按 Controls 倒序依次停靠，Panel 的边框、GroupBox 的标题占的地方扣掉；窗体改大小、控件显示隐藏、加入移出时重新布局。设计器里改了停靠或大小也立即按同样的规则排好。
+  - **背景图片**：BackgroundImage + BackgroundImageLayout（平铺、居中、拉伸、缩放），窗体、面板、图片框都可以设，设计器里从项目资源选。**背景色沿用父控件**：没设置背景色的标签、面板、分组框等画父控件的背景色（不是父控件的背景图片），和 WinForms 一样，所以书上要把放在背景图上的控件设成 Transparent。分组框的标题处边框断开、透出背景（书上分组框放在深色背景上、标题是白字）。文本框的 BackColor 生效。
+  - **无边框窗体**：FormBorderStyle = None 时没有标题栏；**运行区自动缩放**：窗体比运行区大时（项目 8 的窗体有 1043×791）整体按比例缩小，右上角显示缩放比例；"放大"让运行区占满整个网页（窗体在左、实训台在右），Esc 还原。
+  - **图表**（`System.Windows.Forms.DataVisualization.Charting.Chart`）：ChartAreas、Legends、Series（AddXY、Points、ChartType 等）、DataSource + DataBind（DataTable / DataView / DataSet，按 XValueMember、YValueMembers 取列），浏览器用 Chart.js 画，配色是 WinForms 默认的 BrightPastel。设计器工具箱加"图表"（和 VS 一样带 ChartArea1、Legend1、Series1），属性窗口"系列和图例"打开对话框编辑系列（名称、图表类型、图例、图例文字、X / Y 值字段）和图例，按 VS 的格式和顺序写回 Designer.cs，对话框不管的属性原样保留。
+  - **路径的反斜杠**：书上写 `BaseDirectory + "Camera\\"`，Linux 上反斜杠会成为文件名的一部分。编译时把传给 System.IO（File、Directory、Path、各种 Stream）和 Image / Bitmap 读写文件方法的路径参数包上 `WindowsPaths.Fix`，反斜杠换成斜杠（和线程、时钟的改写一样不换行、编辑器里看到的是原代码）。
+  - **其他**：Paint 事件（VS 双击面板生成的空 `panel1_Paint` 能编译，平台不触发）；图片框把鼠标按下、松开发给程序（书上方向键按下时转动摄像机、换成按下的图片）；数据库里参数化的日期字符串比较时也转换格式（书上拼出的 `"2024/1/23  23:59:59"` 有两个空格）。
+  - **素材**：项目 8 用到的 20 多张图片（标题、校园背景、三个入口图标、亮灯 / 灭灯的路灯场景、面板背景、监控图标、方向盘和方向键、翻页箭头、关闭按钮）全部自绘，名字和尺寸与教材一致（`runtime/Sim.WinForms/Resources/project8.py` 生成 SVG，`build-gallery.sh` 渲染成 PNG）。
+  - **数据库 WisdomCampus**：平台按教材的表结构建（EnvironmentData、SecurityData、Users），预置 7 天环境数据，"数据分析"的图表一打开就有内容。学生第一次运行带预置数据库的实验时自动建好自己还没有的库（已有的库不动）。
+  - **评分规则**新增：`visible`（连同所在容器都可见）、`window`（某个窗体打开着 / 已关闭）、`exited`（程序已退出）、`image` / `background` 写素材名（如 `background: day_01`，按图片内容核对显示的是不是这张素材）、`points`（图表每个系列的数据点数）；"点击"图片框时和浏览器一样先发鼠标按下、松开。
+  - **示例**：书上任务 3 第 23 步把"自动推送火情"的处理写到了 ch_autoLamp 上，参考工程里"推送LED信息""自动控制"是空方法、"自动推送火情"没有绑定事件，示例按书的意思补全；任务 5 每次查询前清空 Keys（书上没清空，重复查询时照片和时间对不上）。任务 2 只做界面，为了能看效果加上了打开、返回窗体。
+
+**其他改进**：
+
+- 2026-10-22：代码编辑器的语言功能：代码补全（输入 `btn_Open.` 列出按钮的属性、方法、事件，只列出平台仿真了的成员）、悬停提示、参数提示（`MessageBox.Show(` 列出重载，标出正在填的参数）、停止输入 1 秒后自动检查编译错误（提示和点"运行"时一样）。语言服务是一个常驻进程，每个浏览器标签页一份工程，只更新有变化的文件。实测（限制 2 核）：50 个标签页同时检查 1.2 秒内全部完成，同时补全 0.7 秒；内存约 260 MB。
+- 2026-10-22：AI 评阅：学生提交时浏览器给每个窗体截图；自动评分后由 DeepSeek Flash（支持图片输入和 JSON 输出）按书上评价表给老师评分项打建议分、写评语，发出的内容不含姓名学号，学生代码里像指令的文字一律当作品内容。提示词按教材的命名习惯校准（"缩写_含义"、书上规定的控件名、界面上不用的标签保留默认名都不扣分）：教材参考答案得 28/30，默认控件名、没有注释的作品得 15/30。评阅页显示截图和 AI 建议，可逐个采纳或"全部采纳"（不覆盖老师已评的分）；学生在老师评阅后又提交时提示老师重新看。一份作业约 0.02 元。
+- 2026-10-25：评价项和自测（为一个班试用做准备）：实验页工具栏"评价项"打开侧栏，列出这个实验（作业则是布置时的评分规则和各项分值）自动检查的功能项；"自己检查"在服务器上按评分规则运行学生现在的程序，逐项显示通过与否和不通过的原因。不计分、不留记录，自由练习和作业都能用；每人同时一次，结果在内存里保留到下一次，检查之后改过代码会提示结果可能过时；和提交评分共用全站的并发上限。评分时操作控件前最多等 3 秒让它出现（上一步刚打开的窗体在机器忙时晚一点显示）。
+- 2026-10-25：一个班试用前的准备。
+  - **全班模拟**（`server/test/classroom.ts`）：45 个虚拟学生通过 HTTP / WebSocket 依次登录、打开作业、边写边检查、运行、点按钮、自己检查、提交，每个环节在 10 秒内陆续开始，统计每人等了多久。服务器限制在 2 核、用 Release 版运行时：登录、打开、检查、运行到窗体出现、点按钮都在 1.5 秒内（项目 8 第一次运行要建 WisdomCampus 库，约 5 秒）。
+  - **评分并发 6 → 16**：评分时 CPU 只用了两三成，慢在并发上限。45 人同时自测项目 8 任务 3，最后一人原来要等约 4 分钟，现在约 1.5 分钟；项目 3 任务 2 从约 1.5 分钟降到半分钟。并发 24 时 CPU 接近 80%，定时器来不及触发，参考答案被误判，所以停在 16（可用 `SIM_GRADE_CONCURRENCY` 调整）。提交评分队列同时评的份数跟着并发上限走，不再固定为 3 份。
+  - **检查的默认等待 2 秒 → 5 秒**：机器忙时，点"数据分析"后查库、画图表会超过 2 秒，正确的程序被判不通过。条件满足就立即往下走，放宽只让不通过的检查多等一会儿；规则里原来写的 3 秒一并去掉。
+  - **删除学生时删除他的数据库**：用户编号在删掉最大的编号后会重新用给下一个新学生，原来新学生会看到前一个人的库。
+  - **手动备份与恢复**：`deploy/backup.sh` 把平台数据库和每个学生的库（SQLite 一致读取）导出到宿主机的 `backups/<日期时间>/`；`deploy/restore.sh` 先备份现在的数据，再停平台、替换（删掉旧库的 -wal 文件）、启动。本机 Docker 实测备份、改数据、恢复后数据回到备份时的样子。
+  - **WebSocket 心跳与断线重连**：线上前面的 Nginx Proxy Manager 默认 60 秒没数据就断开 WebSocket（本机用默认配置的 nginx 实测），学生的窗体开着一分钟不操作，程序就被结束、点了没反应。服务器改为 30 秒没收到数据就发 ping（Bun 的 idleTimeout），经 nginx 空闲 150 秒仍连着。连接意外断开时（部署重启、网络抖动），运行区显示"正在重新连接…"，清掉已经失效的窗体，按 1、2、4…最长 10 秒的间隔自动重连；连上后提示"刚才的程序已经结束，请重新运行"，实训台恢复。
+  - **登录失败的限制**：原来按 IP 计数、任何人登录成功就清零，学生用自己的账号登录一次就能接着猜同学的 6 位数字密码。改为同一个账号 10 分钟输错 10 次只锁这个账号（同班其他人不受影响），同一 IP 10 分钟 300 次（登录成功不清零）。
+  - **旧浏览器提示**：网页按 Chrome / Edge 94 以上打包（机房电脑是 Chrome 94，见 2026-10-28），更旧的浏览器或 360 浏览器的兼容模式会一片空白。index.html 里用老写法的一段脚本：网页程序有语法错误时说明浏览器太旧、怎么切换极速模式，并显示浏览器版本字符串方便老师排查；15 秒还没显示出来时提示正在加载。
+  - **使用说明**（`/help`，没登录也能看）：学生部分讲登录、自由练习和作业、设计器、运行、实训台、自己检查和提交、数据库；老师登录后多出建班导入名单、布置作业、评阅和成绩、上课前后的注意事项；最后是常见问题。登录页和各页顶栏都有入口，在新标签页打开，不打断正在做的事；可以直接打印。
+  - **首次打开的下载量**：实验页第一次打开约 1.5 MB（压缩后，代码编辑器 Monaco 占 1 MB），之后浏览器长期缓存。全班 45 人同时第一次打开约 70 MB，服务器公网带宽 5 Mbps 时要近 2 分钟。
+
+- 2026-10-26：**任务说明**。每个实验一份 `task.md`（任务目标、界面和控件名表格、实现步骤、和书上不一样的地方、在平台上怎么试），用自己的话精简写，详细过程标出书页，不照搬书上原文。工具栏"评价项"改成"**任务**"：右侧面板上面是任务说明，下面是评价项和"自己检查"；面板不遮挡页面、可以拖宽，开着也能搭界面、写代码；第一次打开一个实验（或作业）时自动打开（记在浏览器里）。渲染用自己写的 Markdown 子集（标题、段落、两级列表、表格、提示框、加粗、代码），先转义全部 HTML。布置作业时任务说明随作业保存，老师可以改写；以前布置的作业用实验现在的说明。测试检查任务说明表格里的控件名都在示例的 Designer.cs 里。先写了项目 3 任务 2、项目 6 任务 2 两份样板，随后补齐其余 21 份（23 个实验全部有说明）。
+- 2026-10-26：**窗体改名**。23 个示例里 11 个的主窗体不叫 Form1（Login、frm_analog、frm_LED、frm_control、Main），学生的空白工程却只有 Form1，以前属性窗口改不了窗体名（项目 8 任务 2 的评分还要找 Main 窗体）。现在选中窗体可以改"名称"：和 VS 一样，类名、构造函数、各文件里的 `new X()` 和 X 类型的变量都改（跳过字符串和注释），Designer.cs 里窗体的块头注释和 `this.Name` 也改，两个文件跟着改名；事件处理方法名（如 Form1_Load）和窗体标题不变。改名不进设计器的撤销历史。任务说明里提示先改名再双击窗体生成 Load 事件。
+- 2026-10-26：代码用 **bun fmt** 格式化，格式写在 `bunfig.toml`（不写分号、单引号、一行最长 160，和原来的写法一致）；`docs/教材摘要/` 是书上的摘录，不格式化。
+- 2026-10-28：**兼容机房的 Chrome 94**。用 Chromium 94 实测，打开 http 地址时实验页报 `crypto.randomUUID is not a function`（这个函数只在 https 和 localhost 下有）；还时好时坏地一片空白：Chrome 94 在 Promise 回调里调用 `import()`（Vite 的预加载就是这样）时，有时把 `import("./X.js")` 相对于网页地址解析，请求 `/X.js` 拿到首页 HTML。改法：打包目标改成 Chrome / Edge 94；`web/src/polyfills.ts` 补上 `crypto.randomUUID`、`structuredClone`（只复制普通数据）、`findLast` / `findLastIndex`；`vite.config.ts` 的小插件在 Vite 找完预加载依赖之后把代码块之间的 `import("./X.js")` 改成 `import("/assets/X.js")`，改过的代码块换新文件名（不用缓存里的旧文件）；容器查询（Chrome 105）改成 ResizeObserver 量宽度加 class（实训台的三档布局、设计器窄时隐藏提示文字）；`:has()`（Chrome 105）改成 class（只读和禁用的文本框灰底、没标题的分组框）。Monaco 自带的几条 `:has()`、`color-mix()` 样式在 Chrome 94 里不生效，只影响 Markdown 悬停提示里的复选框等细节。实测 Chrome 94 经 http 打开登录、实验页（设计器改属性、代码补全、运行程序）、数据库、班级管理、使用说明，各页面直接打开 5 遍都正常。
+- 2026-10-28：**运行中改了自动重新运行**。以前改了代码或设计器，运行区的窗体不变，要按 F5 才看得到。现在程序运行时（`WorkbenchPage.vue`）每次修改后等 1.5 秒没有新的改动，先用语言服务检查整个工程（和边写边检查同一个接口，不生成程序集）：没有错误就重新编译运行；有错误就不重启，原来的程序接着运行，工具栏提示"代码有错误，改好后自动重新运行"。检查期间又改了、程序已经停了或换了工程，这次作废。只在运行中触发，停止后改动不会自动启动程序。
+- 2026-10-28：**实训台接线**。讨论"ADAM 模块和传感器的虚拟连线"后决定：本课学的是 C# 界面和事件，学生不自己接线（那是安装调试课的内容，见路线图第 4 阶段），只做两件事。①**串口要选对**：以前选哪个 COM 口都能控制设备，现在按接线判断（接线随实验，项目 7 把 4150 并到 COM2），选错了返回值照反编译的真机版 dll，设备没反应；C# 端 `TrainingBoard.Reaches` 判断，`Open` / `Close` 报告给服务器（`adam4150/open` 等，没变不发），`BoardState.opened` 记下程序打开的串口，实训台、评分说明据此提示打错的串口。打开实验时浏览器发 `experiment` 消息，服务器按示例的 `meta.json` 换接线；老师看学生提交时也按作业的实验接线。②**只读接线展示**：鼠标移到实训台的设备上，标题栏写出线路、对应通道和串口高亮；串口服务器按接线列出每个口接的设备，程序打开的口亮绿点；程序里串口下拉框的灰字也按当前接线。顺带把"4017"统一写成 ADAM-4017+（代码里的 `adam4017Helper` 是教材 dll 的名字，不改）。另外核对真机版发现：4150 串口没打开时真机版 `SetData()` 返回 null（书上代码会出空引用异常），而书上照着写的仿真版返回全 false；平台保持全 false，改为在实训台和评分说明里提示"串口没有打开，程序却在读写它"（`adam4150/unopened` 等，每次打开后最多报一次）。
+- 2026-10-28：**上课前检查 8 个项目**。23 个实验逐个在浏览器里照任务说明操作、"自己检查"，全部通过。修了：①日期选择框在机房 Chrome 94 上点了没反应（项目 6 任务 3、项目 8 任务 5 选不了日期）：以前靠 `showPicker()` 弹出，它 Chrome 99 才正式有，Chrome 94 的原型上有这个方法、调用却没反应；改成把浏览器的日期框透明地盖在下拉按钮上、日历图标撑满按钮，点按钮由浏览器自己弹出（Chromium 94 和新版 Chrome 实测都能选日期）。②运行时的长日期多了星期（2026年10月28日星期三，框窄被截掉）：Linux 的 zh-CN 长日期带星期，中文 Windows 不带，运行器改成 Windows 的写法。③评分漏洞：项目 3 任务 1、项目 4 任务 3 的"能关闭"和项目 7 任务 2 的"熄灯模式关灯"，程序什么都不做也能通过，补上先确认灯亮过。④串口红字提示挪到实训台最上方（原来在底部，要往下滚）。⑤评分说明的空格（"期望 6 秒内""照明灯 1 打开"）。⑥任务说明按实测补充：项目 2 任务 1（事件窗口叫"单击"，先复位清 LED 屏）、项目 2 任务 2 和项目 3 任务 2 的控件表、项目 2 任务 3 的 `ledHelper.Close()`、项目 3 任务 2 的"计时到"、项目 4 任务 2（IP 不能空、可以放大）、项目 7 任务 1 第 5 步、项目 7 任务 3 的预约步骤和开关第一次点没反应、项目 8 任务 5 先恢复实验数据。没改的平台限制：`Control.Focus()` 不移动焦点，密码框显示圆点不是星号。
+- 2026-11-02：**导出 EXE**。原计划"导出 VS 工程"，讨论后改成直接导出一个 exe，学生下载后在机房电脑上双击就能控制真的实训台，更方便。①编译：编译服务收到带 `export` 的请求时（`runtime/Sim.Runner/ExeExporter.cs`），用 Roslyn 照教材工程编译学生写的原始代码：.NET Framework 4.5 的引用程序集（NuGet 包 `Microsoft.NETFramework.ReferenceAssemblies.net45`，构建时只复制教材工程引用的 13 个到 `netfx/`，9 MB），引用真机版设备类库；平台为仿真做的改写（虚拟时钟、旧线程 API、Windows 路径）和 API 限制都不用，和在 VS 里编译一样。窗体应用、AnyCPU 优先 32 位（和教材工程一致，教材 dll 也都是 AnyCPU），带默认清单和版本信息。②教材 dll 嵌进 exe：真机版 `DeviceCtrlLibrary.dll` 和它 `API/` 下的 7 个 dll、`WinFormsDeviceControlLibrary.dll`、媒体播放器的两个 Interop dll 都是托管程序集，作为资源嵌入；加进 exe 的模块初始化器在 Main 之前注册 `AssemblyResolve`，用到时从 exe 里加载，学生的 `Program.cs` 不用改。③资源：平台生成的 `Properties.Resources` 改成从 exe 里取图片、声音；代码里按文件名用到的素材（项目 7 任务 2 的 `Resources//ring.mp3`）启动时放到 exe 旁边的 Resources 文件夹，和 VS 输出目录一样；媒体播放器的 `OcxState` 用教材 Form1.resx 里的默认状态。④书上项目 2 任务 3 的 `ledHelper.Close()` 在教材类库里没有（真机版 LED 每次发送才用串口），平台补过这个方法，导出时也补一个什么都不做的扩展方法。23 个实验全部能导出，约 0.9 MB；在 mono + Xvfb 里实测能启动，教材控件库的灯泡控件、开关图片都显示出来；真机还要在机房电脑上实测。⑤教材 dll 有版权，GitHub 仓库是公开的，不进仓库：服务器上放在 `~/IOT_SIM/textbook-libs/`，compose 只读挂进容器（`deploy/README.md`），没放时导出提示原因。⑥接口 `POST /api/export-exe`：成功返回 exe（文件名取工程的命名空间，如"教室情景模式.exe"），代码有错误时 422 和报错，实验页弹框列出前 20 条，点击跳到出错的代码。注意：项目 6、8 导出的 exe 按学生写的连接字符串连真的 SQL Server，机房电脑上要有对应的库；exe 没有签名，从网上下载后第一次运行 Windows 可能提示"已保护你的电脑"，点"更多信息"→"仍要运行"。
+- 2026-11-03：**导出 VS 工程**。实验页工具栏的"导出 EXE"改成下拉按钮"导出 ▾"，里面是"导出 EXE"和"导出 VS 工程"。讨论后定下：机房装的是 VS 2012；代码有错不让导出（和 EXE 一样）；这次不做把工程导回平台。①检查：编译服务收到 `export.kind = "project"` 的请求时（`runtime/Sim.Runner/ProjectExporter.cs`），照机房的环境编译一遍要放进 zip 的代码：**C# 5**（VS 2012 的编译器）、.NET Framework 4.5、真机版设备类库。新版 C# 的写法报 CS8026，`CompileHints` 按报错里的功能名给出改法（字符串插值改 `string.Format`、`?.` 改先判断 null、`=>` 改大括号等 12 种）。导出 EXE 仍按最新的 C# 编译，不受影响。23 个示例都是 C# 5 的写法，全部能导出。②工程照教材的样子（VS 2012 窗体应用，`.sln` + `.csproj`，ToolsVersion 4.0）：平台生成的 `Properties/Resources.Designer.cs` 从素材库取图，导出时换成 VS 的 ResXFileCodeGenerator 生成的写法和 `Resources.resx`（ResXFileRef 指向 `Resources\` 下的图片）；代码里按文件名用到的素材（ring.mp3）设成复制到输出目录，运行时在 `bin\Debug\Resources\`，和教材一样；每个窗体、用户控件带 `.resx`（媒体播放器的 OcxState 用教材的默认状态），`SubType`、`DependentUpon` 和 VS 一样，VS 里能打开设计器；补上 AssemblyInfo、Settings、App.config。③引用和教材工程一样只加代码直接用到的教材 dll（一般是 DeviceCtrlLibrary 和 WinFormsDeviceControlLibrary，项目 7 寝室加媒体播放器的两个 Interop），全部教材 dll 放在工程的 `lib\`，HintPath 指过去，编译时 VS 把依赖一起复制到 `bin\Debug`；只带这些引用编译不过时引用全部。书上的 `ledHelper.Close()` 用到时带上 `LedHelperCompat.cs`。④文本文件用带 BOM 的 UTF-8 和 CRLF（VS 2012 打开不带 BOM 的文件会把中文当 GBK）；zip 的文件名用 GBK（中文 Windows 资源管理器自带的解压、老的压缩软件都按 GBK 读，UTF-8 在 Windows 7 上会乱码），另附 Info-ZIP 的 Unicode 文件名字段（0x7075），7-Zip、Linux 的 unzip 在别的语言的系统上也显示正确（`ZipWriter.cs`）。⑤23 个示例导出的工程在 mono 的 msbuild 里全部编译通过，输出目录和教材工程的 `bin\Debug` 一样，程序能启动；VS 2012 还要在机房电脑上实测。接口 `POST /api/export-project`，返回 zip，代码有错时 422，弹框说明"照机房电脑上的 VS 2012 编译"。
+
+## 技术风险与待确认事项
+
+最大的风险是仿真 WinForms 的覆盖面和交互流畅度；交互流畅度已在第 0 阶段验证。
+
+| 风险                 | 担心什么                                                                                                                                    | 应对                                                                                                                                                     |
+| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 仿真 WinForms 工作量 | 项目 4–8 需要的控件和窗体特性较多                                                                                                           | 按项目逐步实现；项目 1–3 只需约 10 种控件                                                                                                                |
+| 事件顺序保真         | 书上代码依赖真实 WinForms 的事件顺序：单选按钮先触发"取消选中"再触发"选中"，ComboBox 的 Click 先于展开，CheckBox 的 Click 时 Checked 已切换 | 逐项对照真实行为实现，并用书上代码做回归测试（单选、复选、下拉已实现并有测试）                                                                           |
+| 书与配套不一致       | 控件名、步骤在书、表格和配套工程之间经常不同，书上代码有编译错误                                                                            | 以书为准逐任务整理模板和修正版答案                                                                                                                       |
+| T-SQL 转 SQLite      | 教材用 SQL Server 写法（`TOP`、`CONVERT`、DataAdapter 回写、日期字符串）                                                                    | 已实现：ScriptDom 解析后按白名单转写；连接串只按库名打开学生自己的库；日期统一存为标准格式；STRICT 表和 CHECK 约束让类型、长度错误和 SQL Server 一样报出 |
+| 旧版线程 API         | `Thread.Suspend` / `Resume` / `Abort` 在新版 .NET 上会报错                                                                                  | 已实现：编译时改写成平台的协作式实现，被挂起或终止的线程在 Sleep、改控件、调设备类库时停下                                                               |
+| 图片处理             | System.Drawing 在 Linux 上不受支持                                                                                                          | 已实现：自己的 `Image` / `Bitmap` 只保存图片文件数据和尺寸，能显示、保存、读回，不能逐像素绘制                                                           |
+| 时间相关逻辑         | 项目 3 起就有按时刻开关灯的练习，部分定时器间隔长达 2 小时                                                                                  | 已实现：实训台上的虚拟时钟可拨时间、1×/10×/60× 倍速，编译时把 DateTime.Now / Today / UtcNow 改写成虚拟时钟                                               |
+| 事件延迟             | 浏览器和服务器之间来回传递事件，点击是否有卡顿感                                                                                            | 已实测：单次约 15 ms，100 个程序同时操作中位数约 60 ms                                                                                                   |
+| 并发资源             | 100 个程序同时运行时的内存和 CPU                                                                                                            | 已压测：100 个程序合计约 1.1 GB；2 核下 100 人同时启动约 8 秒；CPU 时间上限防死循环，运行超时回收                                                        |
+| 公网安全             | 恶意或无意的危险代码                                                                                                                        | bubblewrap 沙箱 + 编译检查 + 账号登录（已完成）                                                                                                          |
+| ICP 备案             | 办理需要数周                                                                                                                                | 已备案                                                                                                                                                   |
+
+**待确认**
+
+- [x] 串口要求接对：按实训台接线（COM2 ADAM-4017+、COM3 ADAM-4150、COM4 ZigBee 协调器、COM5 LED 屏，项目 7 的 4150 并在 COM2），选错和真机一样没反应，实训台上提示
+- [ ] 虚拟实训台的画面细节（目前为第一版）
+- [x] 第一个场景：智慧校园（和教材一致）
+- [x] 设备写法：兼容教材类库
+- [x] 数据库：教材用 SQL Server 2008 R2，平台用 SQLite 模拟
+- [x] 项目 5 的推送方式：推送到 LED 屏

package.json

@@ -1,7 +1,11 @@
 {
   "name": "iot-sim",
   "private": true,
-  "workspaces": ["shared", "server", "web"],
+  "workspaces": [
+    "shared",
+    "server",
+    "web"
+  ],
   "scripts": {
     "dev:server": "bun run --cwd server dev",
     "dev:web": "bun run --cwd web dev",

runtime/Directory.Build.props

@@ -8,5 +8,7 @@
     <!-- 需要 zh-CN 区域设置：日期格式要和中文 Windows 一致 -->
     <InvariantGlobalization>false</InvariantGlobalization>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <!-- 异常堆栈里的源文件路径不暴露服务器上的目录（StudentStackTrace 按 /runtime/Sim. 识别平台自己的代码） -->
+    <PathMap>$(MSBuildThisFileDirectory)=/runtime/</PathMap>
   </PropertyGroup>
 </Project>

runtime/Runtime.slnx

@@ -1,5 +1,6 @@
 <Solution>
   <Project Path="Sim.WinForms/Sim.WinForms.csproj" />
   <Project Path="Sim.Devices/Sim.Devices.csproj" />
+  <Project Path="Sim.Data/Sim.Data.csproj" />
   <Project Path="Sim.Runner/Sim.Runner.csproj" />
 </Solution>

runtime/Sim.Data/Engine/Database.cs

@@ -0,0 +1,168 @@
+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.IO;
+using System.Linq;
+using Microsoft.Data.Sqlite;
+
+namespace Sim.Data.Engine;
+
+/// <summary>一列的定义（来自元数据表，保留建表时的 T-SQL 写法）</summary>
+internal sealed record ColumnInfo(string Name, TSqlType Type, bool Nullable, bool Identity, bool PrimaryKey, string? Default);
+
+internal sealed record TableInfo(string Name, IReadOnlyList<ColumnInfo> Columns)
+{
+    public ColumnInfo? Find(string column) => Columns.FirstOrDefault(c => string.Equals(c.Name, column, StringComparison.OrdinalIgnoreCase));
+    public ColumnInfo? Identity => Columns.FirstOrDefault(c => c.Identity);
+}
+
+/// <summary>
+/// 一个学生的全部数据库：一个目录，每个库一个 SQLite 文件（库名.db）。
+/// master 是默认库（连接字符串里不写 Initial Catalog 时连到它），和 SQL Server 一样也能在里面建表。
+/// </summary>
+internal sealed class DatabaseStore
+{
+    public const string Master = "master";
+    /// <summary>元数据表：每列的 T-SQL 类型、是否自增等。学生的 SQL 里不能引用它</summary>
+    public const string MetaTable = "__sim_columns";
+    private const int MaxDatabases = 20;
+    /// <summary>每个库最多约 50 MB（4 KB 一页）</summary>
+    private const int MaxPages = 12800;
+
+    public DatabaseStore(string directory) => Directory = directory;
+
+    public string Directory { get; }
+
+    /// <summary>学生程序运行时：服务器通过环境变量 SIM_DB_DIR 指定（沙箱里挂载学生自己的数据库目录）</summary>
+    public static DatabaseStore? FromEnvironment() =>
+        Environment.GetEnvironmentVariable("SIM_DB_DIR") is { Length: > 0 } dir ? new DatabaseStore(dir) : null;
+
+    public IEnumerable<string> List() =>
+        System.IO.Directory.Exists(Directory)
+            ? System.IO.Directory.EnumerateFiles(Directory, "*.db").Select(f => Path.GetFileNameWithoutExtension(f)!).Where(n => n != Master).Order(StringComparer.Ordinal)
+            : Enumerable.Empty<string>();
+
+    /// <summary>库名大小写不敏感（和 SQL Server 一样），返回磁盘上实际的名字</summary>
+    public string? Resolve(string name)
+    {
+        if (string.Equals(name, Master, StringComparison.OrdinalIgnoreCase)) return Master;
+        return List().FirstOrDefault(n => string.Equals(n, name, StringComparison.OrdinalIgnoreCase));
+    }
+
+    public SqliteConnection Open(string name)
+    {
+        var resolved = Resolve(name);
+        if (resolved == null) throw SqlException.CannotOpenDatabase(name);
+        if (resolved == Master && !File.Exists(PathOf(Master))) Create(Master, allowMaster: true);
+        // 不用连接池：最后一个连接关闭时 WAL 里的数据写回主文件，复制、恢复数据库文件时不会丢数据
+        var connection = new SqliteConnection(new SqliteConnectionStringBuilder { DataSource = PathOf(resolved), Mode = SqliteOpenMode.ReadWrite, Pooling = false }.ToString());
+        connection.Open();
+        Functions.Register(connection);
+        using var pragma = connection.CreateCommand();
+        pragma.CommandText = $"PRAGMA max_page_count = {MaxPages}; PRAGMA case_sensitive_like = OFF;";
+        pragma.ExecuteNonQuery();
+        return connection;
+    }
+
+    public void Create(string name, bool allowMaster = false)
+    {
+        CheckName(name);
+        if (!allowMaster && Resolve(name) != null) throw SqlException.DatabaseExists(name);
+        if (List().Count() >= MaxDatabases) throw new SqlException(1105, $"最多只能建 {MaxDatabases} 个数据库，先删除不用的数据库。");
+        System.IO.Directory.CreateDirectory(Directory);
+        using var connection = new SqliteConnection(new SqliteConnectionStringBuilder { DataSource = PathOf(name), Mode = SqliteOpenMode.ReadWriteCreate, Pooling = false }.ToString());
+        connection.Open();
+        using var command = connection.CreateCommand();
+        command.CommandText =
+            "PRAGMA journal_mode = WAL;" +
+            $"CREATE TABLE IF NOT EXISTS {MetaTable} (table_name TEXT NOT NULL COLLATE NOCASE, column_name TEXT NOT NULL COLLATE NOCASE, " +
+            "ordinal INTEGER NOT NULL, type_name TEXT NOT NULL, nullable INTEGER NOT NULL, is_identity INTEGER NOT NULL, " +
+            "is_primary_key INTEGER NOT NULL, default_text TEXT, PRIMARY KEY (table_name, column_name));";
+        command.ExecuteNonQuery();
+    }
+
+    public void Drop(string name)
+    {
+        var resolved = Resolve(name);
+        if (resolved == null || resolved == Master) throw new SqlException(3701, $"无法对 数据库 '{name}' 执行 删除，因为它不存在，或者您没有所需的权限。");
+        foreach (var suffix in new[] { "", "-wal", "-shm" }) File.Delete(PathOf(resolved) + suffix);
+    }
+
+    private string PathOf(string name) => Path.Combine(Directory, name + ".db");
+
+    /// <summary>库名就是文件名：不能有路径分隔符等字符</summary>
+    private static void CheckName(string name)
+    {
+        if (name.Length is 0 or > 64 || name.StartsWith('.') || name.IndexOfAny(Path.GetInvalidFileNameChars()) >= 0 || name.IndexOfAny(['\\', ':', '*', '?', '"', '<', '>', '|']) >= 0)
+            throw new SqlException(102, $"数据库名 '{name}' 无效：不能为空、不能超过 64 个字，也不能包含 \\ / : * ? \" < > | 等字符。");
+    }
+
+    // ---------- 表结构（元数据表） ----------
+
+    public static TableInfo? GetTable(SqliteConnection connection, string name)
+    {
+        if (IsHidden(name)) return null;
+        using var command = connection.CreateCommand();
+        command.CommandText = "SELECT name FROM sqlite_master WHERE type = 'table' AND name = $name COLLATE NOCASE";
+        command.Parameters.AddWithValue("$name", name);
+        if (command.ExecuteScalar() is not string actual) return null;
+
+        command.CommandText = $"SELECT column_name, type_name, nullable, is_identity, is_primary_key, default_text FROM {MetaTable} WHERE table_name = $name ORDER BY ordinal";
+        var columns = new List<ColumnInfo>();
+        using (var reader = command.ExecuteReader())
+        {
+            while (reader.Read())
+            {
+                columns.Add(new ColumnInfo(reader.GetString(0), TSqlType.Parse(reader.GetString(1)), reader.GetInt64(2) != 0,
+                    reader.GetInt64(3) != 0, reader.GetInt64(4) != 0, reader.IsDBNull(5) ? null : reader.GetString(5)));
+            }
+        }
+        return new TableInfo(actual, columns);
+    }
+
+    public static IReadOnlyList<string> ListTables(SqliteConnection connection)
+    {
+        using var command = connection.CreateCommand();
+        command.CommandText = "SELECT name FROM sqlite_master WHERE type = 'table' ORDER BY name";
+        var tables = new List<string>();
+        using var reader = command.ExecuteReader();
+        while (reader.Read())
+        {
+            var name = reader.GetString(0);
+            if (!IsHidden(name)) tables.Add(name);
+        }
+        return tables;
+    }
+
+    public static void SaveColumns(SqliteConnection connection, string table, IEnumerable<ColumnInfo> columns, int firstOrdinal = 0)
+    {
+        using var command = connection.CreateCommand();
+        command.CommandText = $"INSERT OR REPLACE INTO {MetaTable} VALUES ($t, $c, $o, $type, $null, $id, $pk, $def)";
+        var ordinal = firstOrdinal;
+        foreach (var column in columns)
+        {
+            command.Parameters.Clear();
+            command.Parameters.AddWithValue("$t", table);
+            command.Parameters.AddWithValue("$c", column.Name);
+            command.Parameters.AddWithValue("$o", ordinal++);
+            command.Parameters.AddWithValue("$type", column.Type.ToString());
+            command.Parameters.AddWithValue("$null", column.Nullable ? 1 : 0);
+            command.Parameters.AddWithValue("$id", column.Identity ? 1 : 0);
+            command.Parameters.AddWithValue("$pk", column.PrimaryKey ? 1 : 0);
+            command.Parameters.AddWithValue("$def", (object?)column.Default ?? DBNull.Value);
+            command.ExecuteNonQuery();
+        }
+    }
+
+    public static void DeleteColumns(SqliteConnection connection, string table)
+    {
+        using var command = connection.CreateCommand();
+        command.CommandText = $"DELETE FROM {MetaTable} WHERE table_name = $t";
+        command.Parameters.AddWithValue("$t", table);
+        command.ExecuteNonQuery();
+    }
+
+    /// <summary>平台内部的表和 SQLite 系统表，学生看不到也不能引用</summary>
+    public static bool IsHidden(string name) =>
+        name.StartsWith("__sim", StringComparison.OrdinalIgnoreCase) || name.StartsWith("sqlite_", StringComparison.OrdinalIgnoreCase);
+}

runtime/Sim.Data/Engine/Functions.cs

@@ -0,0 +1,255 @@
+using System;
+using System.Data.SqlClient;
+using System.Globalization;
+using Microsoft.Data.Sqlite;
+
+namespace Sim.Data.Engine;
+
+/// <summary>
+/// 注册到 SQLite 连接上的 T-SQL 函数和运算（转写后的 SQL 调用它们，学生的 SQL 不能直接调用 tsql_ 开头的名字）。
+/// 函数里抛出的 SqlException 先记在 <see cref="Pending"/>，执行语句处取出原样抛给学生（SQLite 只能传回文字信息）。
+/// </summary>
+internal static class Functions
+{
+    [ThreadStatic] private static SqlException? _pending;
+
+    public static SqlException? TakePending()
+    {
+        var pending = _pending;
+        _pending = null;
+        return pending;
+    }
+
+    private static Exception Fail(SqlException error)
+    {
+        _pending = error;
+        return error;
+    }
+
+    public static void Register(SqliteConnection c)
+    {
+        c.CreateFunction<object?, object?, object?>("tsql_add", Add, isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_div", Divide, isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_mod", Modulo, isDeterministic: true);
+        c.CreateFunction("tsql_getdate", () => Values.FormatDateTime(TruncateToMilliseconds(DateTime.Now)));
+        c.CreateFunction<string, object?, object?>("tsql_datepart", DatePart, isDeterministic: true);
+        c.CreateFunction<string, object?, object?, object?>("tsql_dateadd", DateAdd, isDeterministic: true);
+        c.CreateFunction<string, object?, object?, object?>("tsql_datediff", DateDiff, isDeterministic: true);
+        c.CreateFunction<string, object?, object?, object?, object?>("tsql_convert", Convert, isDeterministic: true);
+        c.CreateFunction<object?, object?>("tsql_len", s => s is null ? null : (long)Text(s).TrimEnd(' ').Length, isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_left", (s, n) => s is null || n is null ? null : Left(Text(s), ToLong(n)), isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_right", (s, n) => s is null || n is null ? null : Right(Text(s), ToLong(n)), isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_charindex", (f, s) => f is null || s is null ? null : (long)Text(s).IndexOf(Text(f), StringComparison.OrdinalIgnoreCase) + 1, isDeterministic: true);
+        c.CreateFunction<object?, object?>("tsql_floor", x => x is null ? null : Math.Floor(ToDouble(x)), isDeterministic: true);
+        c.CreateFunction<object?, object?>("tsql_ceiling", x => x is null ? null : Math.Ceiling(ToDouble(x)), isDeterministic: true);
+        c.CreateFunction<object?, object?, object?>("tsql_power", (x, y) => x is null || y is null ? null : Math.Pow(ToDouble(x), ToDouble(y)), isDeterministic: true);
+        c.CreateFunction<object?, object?>("tsql_sqrt", x => x is null ? null : Math.Sqrt(ToDouble(x)), isDeterministic: true);
+        c.CreateFunction<object?, object?>("tsql_cmp", v => v is string s && Values.LooksLikeDate(s) ? Values.NormalizeDateLiteral(s) : v, isDeterministic: true);
+        c.CreateFunction("tsql_newid", () => Guid.NewGuid().ToString().ToUpperInvariant());
+        c.CreateFunction("tsql_rand", () => Random.Shared.NextDouble());
+    }
+
+    private static DateTime TruncateToMilliseconds(DateTime value) => new(value.Ticks - value.Ticks % TimeSpan.TicksPerMillisecond, value.Kind);
+
+    // ---------- 运算 ----------
+
+    /// <summary>T-SQL 的 +：两边都是字符串时连接，有数字时按数字相加（字符串转不成数字时报错）</summary>
+    private static object? Add(object? a, object? b)
+    {
+        if (a is null || b is null) return null;
+        if (a is string sa && b is string sb) return sa + sb;
+        if (a is byte[] || b is byte[]) throw Fail(SqlException.NotSupported("二进制数据的 + 运算"));
+        var x = Number(a);
+        var y = Number(b);
+        return x is long lx && y is long ly ? lx + ly : ToDouble(x) + ToDouble(y);
+    }
+
+    private static object? Divide(object? a, object? b)
+    {
+        if (a is null || b is null) return null;
+        var x = Number(a);
+        var y = Number(b);
+        if (ToDouble(y) == 0) throw Fail(SqlException.DivideByZero());
+        return x is long lx && y is long ly ? lx / ly : ToDouble(x) / ToDouble(y);
+    }
+
+    private static object? Modulo(object? a, object? b)
+    {
+        if (a is null || b is null) return null;
+        var x = Number(a);
+        var y = Number(b);
+        if (ToDouble(y) == 0) throw Fail(SqlException.DivideByZero());
+        return x is long lx && y is long ly ? lx % ly : ToDouble(x) % ToDouble(y);
+    }
+
+    /// <summary>数字原样返回；字符串按 T-SQL 隐式转换成 int（带小数点时转成 float），转不了时报 245</summary>
+    private static object Number(object value) => value switch
+    {
+        long or double => value,
+        string s when long.TryParse(s.Trim(), NumberStyles.Integer, CultureInfo.InvariantCulture, out var l) => l,
+        string s when s.Contains('.') && double.TryParse(s.Trim(), NumberStyles.Float, CultureInfo.InvariantCulture, out var d) => d,
+        _ => throw Fail(Values.ConvertError(value, "int")),
+    };
+
+    private static double ToDouble(object value) => value switch
+    {
+        long l => l,
+        double d => d,
+        _ => ToDouble(Number(value)),
+    };
+
+    private static long ToLong(object value) => value is long l ? l : (long)ToDouble(value);
+
+    private static string Text(object value) => value switch
+    {
+        string s => s,
+        double d => d.ToString(CultureInfo.InvariantCulture),
+        _ => System.Convert.ToString(value, CultureInfo.InvariantCulture) ?? "",
+    };
+
+    private static string Left(string s, long n) => n <= 0 ? "" : s[..(int)Math.Min(n, s.Length)];
+    private static string Right(string s, long n) => n <= 0 ? "" : s[^(int)Math.Min(n, s.Length)..];
+
+    // ---------- 日期 ----------
+
+    private static DateTime ToDateTime(object value)
+    {
+        if (value is string s && Values.TryParseDateTime(s, out var d)) return d;
+        throw Fail(SqlException.DateConvertFailed());
+    }
+
+    private static object? DatePart(string part, object? value)
+    {
+        if (value is null) return null;
+        var d = ToDateTime(value);
+        return part.ToLowerInvariant() switch
+        {
+            "year" or "yy" or "yyyy" => d.Year,
+            "quarter" or "qq" or "q" => (d.Month - 1) / 3 + 1,
+            "month" or "mm" or "m" => d.Month,
+            "dayofyear" or "dy" or "y" => d.DayOfYear,
+            "day" or "dd" or "d" => d.Day,
+            "week" or "wk" or "ww" => CultureInfo.InvariantCulture.Calendar.GetWeekOfYear(d, CalendarWeekRule.FirstDay, DayOfWeek.Sunday),
+            "weekday" or "dw" or "w" => (int)d.DayOfWeek + 1,
+            "hour" or "hh" => d.Hour,
+            "minute" or "mi" or "n" => d.Minute,
+            "second" or "ss" or "s" => d.Second,
+            "millisecond" or "ms" => d.Millisecond,
+            _ => throw Fail(new SqlException(155, $"'{part}' 不是可以识别的 datepart 选项。")),
+        };
+    }
+
+    private static object? DateAdd(string part, object? amount, object? value)
+    {
+        if (amount is null || value is null) return null;
+        var d = ToDateTime(value);
+        var n = ToLong(amount);
+        var result = part.ToLowerInvariant() switch
+        {
+            "year" or "yy" or "yyyy" => d.AddYears((int)n),
+            "quarter" or "qq" or "q" => d.AddMonths((int)n * 3),
+            "month" or "mm" or "m" => d.AddMonths((int)n),
+            "day" or "dd" or "d" or "dayofyear" or "dy" or "y" or "weekday" or "dw" or "w" => d.AddDays(n),
+            "week" or "wk" or "ww" => d.AddDays(n * 7),
+            "hour" or "hh" => d.AddHours(n),
+            "minute" or "mi" or "n" => d.AddMinutes(n),
+            "second" or "ss" or "s" => d.AddSeconds(n),
+            "millisecond" or "ms" => d.AddMilliseconds(n),
+            _ => throw Fail(new SqlException(155, $"'{part}' 不是可以识别的 dateadd 选项。")),
+        };
+        return Values.FormatDateTime(result);
+    }
+
+    /// <summary>和 SQL Server 一样数跨过的边界：DATEDIFF(day, '2024-01-01 23:00', '2024-01-02 01:00') = 1</summary>
+    private static object? DateDiff(string part, object? start, object? end)
+    {
+        if (start is null || end is null) return null;
+        var a = ToDateTime(start);
+        var b = ToDateTime(end);
+        return part.ToLowerInvariant() switch
+        {
+            "year" or "yy" or "yyyy" => (long)(b.Year - a.Year),
+            "quarter" or "qq" or "q" => (long)((b.Year - a.Year) * 4 + (b.Month - 1) / 3 - (a.Month - 1) / 3),
+            "month" or "mm" or "m" => (long)((b.Year - a.Year) * 12 + b.Month - a.Month),
+            "day" or "dd" or "d" or "dayofyear" or "dy" or "y" => (long)(b.Date - a.Date).TotalDays,
+            "week" or "wk" or "ww" => (long)((b.Date.AddDays(-(int)b.DayOfWeek) - a.Date.AddDays(-(int)a.DayOfWeek)).TotalDays / 7),
+            "hour" or "hh" => (long)(Trim(b, TimeSpan.TicksPerHour) - Trim(a, TimeSpan.TicksPerHour)).TotalHours,
+            "minute" or "mi" or "n" => (long)(Trim(b, TimeSpan.TicksPerMinute) - Trim(a, TimeSpan.TicksPerMinute)).TotalMinutes,
+            "second" or "ss" or "s" => (long)(Trim(b, TimeSpan.TicksPerSecond) - Trim(a, TimeSpan.TicksPerSecond)).TotalSeconds,
+            "millisecond" or "ms" => (long)(b - a).TotalMilliseconds,
+            _ => throw Fail(new SqlException(155, $"'{part}' 不是可以识别的 datediff 选项。")),
+        };
+    }
+
+    private static DateTime Trim(DateTime d, long unit) => new(d.Ticks - d.Ticks % unit);
+
+    // ---------- CONVERT / CAST，以及插入、修改时按列类型转换 ----------
+
+    /// <summary>tsql_convert('varchar', 10, 值, 120)：转换成 T-SQL 类型；日期按 style 格式化</summary>
+    private static object? Convert(string type, object? length, object? value, object? style)
+    {
+        if (value is null) return null;
+        var t = TSqlType.Parse(length is null ? type : $"{type}({(ToLong(length) < 0 ? "MAX" : ToLong(length).ToString(CultureInfo.InvariantCulture))})");
+        if (t.IsString)
+        {
+            var text = style is not null && value is string s && Values.TryParseDateTime(s, out var date)
+                ? FormatStyle(date, (int)ToLong(style))
+                : Text(value);
+            return t.MaxLength is { } max && text.Length > max ? text[..max] : text;
+        }
+        if (t.IsInteger)
+        {
+            return value switch
+            {
+                long => value,
+                double d => (long)Math.Truncate(d),
+                string s when long.TryParse(s.Trim(), NumberStyles.Integer, CultureInfo.InvariantCulture, out var l) => l,
+                _ => throw Fail(Values.ConvertError(value, t.Name)),
+            };
+        }
+        if (t.IsBit)
+        {
+            return value switch
+            {
+                long l => l != 0 ? 1L : 0L,
+                double d => d != 0 ? 1L : 0L,
+                string s when s.Trim().Equals("true", StringComparison.OrdinalIgnoreCase) => 1L,
+                string s when s.Trim().Equals("false", StringComparison.OrdinalIgnoreCase) => 0L,
+                string s when long.TryParse(s.Trim(), out var l) => l != 0 ? 1L : 0L,
+                _ => throw Fail(Values.ConvertError(value, "bit")),
+            };
+        }
+        if (t.IsFloat)
+        {
+            return value switch
+            {
+                long l => (double)l,
+                double => value,
+                string s when double.TryParse(s.Trim(), NumberStyles.Float, CultureInfo.InvariantCulture, out var d) => d,
+                _ => throw Fail(Values.ConvertError(value, t.Name)),
+            };
+        }
+        if (t.IsDateTime || t.IsDate)
+        {
+            if (value is not string s || !Values.TryParseDateTime(s, out var d)) throw Fail(SqlException.DateConvertFailed());
+            return t.IsDate ? Values.FormatDate(d) : Values.FormatDateTime(d);
+        }
+        return value;
+    }
+
+    /// <summary>CONVERT 的日期样式（教材用 120：yyyy-mm-dd hh:mi:ss）</summary>
+    private static string FormatStyle(DateTime d, int style) => style switch
+    {
+        20 or 120 => d.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
+        21 or 25 or 121 => d.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.InvariantCulture),
+        23 => d.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture),
+        101 => d.ToString("MM/dd/yyyy", CultureInfo.InvariantCulture),
+        102 => d.ToString("yyyy.MM.dd", CultureInfo.InvariantCulture),
+        103 => d.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture),
+        108 or 8 => d.ToString("HH:mm:ss", CultureInfo.InvariantCulture),
+        111 => d.ToString("yyyy/MM/dd", CultureInfo.InvariantCulture),
+        112 => d.ToString("yyyyMMdd", CultureInfo.InvariantCulture),
+        126 => d.ToString("yyyy-MM-ddTHH:mm:ss.fff", CultureInfo.InvariantCulture),
+        _ => d.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
+    };
+}

runtime/Sim.Data/Engine/Session.cs

@@ -0,0 +1,243 @@
+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.Linq;
+using System.Text.RegularExpressions;
+using Microsoft.Data.Sqlite;
+using Microsoft.SqlServer.TransactSql.ScriptDom;
+
+namespace Sim.Data.Engine;
+
+/// <summary>结果集的一列：名字、T-SQL 类型（表达式列为 null），以及来自哪张表的哪一列（SqlCommandBuilder 生成语句时要用）</summary>
+internal sealed record ResultColumn(string Name, TSqlType? Type, string? BaseTable, string? BaseColumn, bool IsKey, bool IsIdentity, bool AllowNull)
+{
+    public Type ClrType => Type?.ClrType is { } t && t != typeof(object) ? t : typeof(object);
+}
+
+/// <summary>一个结果集（读完放在内存里）</summary>
+internal sealed record QueryResult(IReadOnlyList<ResultColumn> Columns, List<object[]> Rows);
+
+/// <summary>一批语句的执行结果：各个结果集和受影响的行数（只有增删改时才算，否则为 -1）</summary>
+internal sealed record BatchResult(List<QueryResult> Results, int RecordsAffected);
+
+/// <summary>
+/// 一个打开的数据库连接：当前库（USE 可以切换）、事务，执行一批 T-SQL。
+/// SqlConnection 和数据库页面的查询窗口都用它。
+/// </summary>
+internal sealed class Session : IDisposable
+{
+    private SqliteTransaction? _transaction;
+    private long _deadline = long.MaxValue;
+
+    public Session(DatabaseStore store, string database, TimeSpan? timeLimit = null)
+    {
+        Store = store;
+        TimeLimit = timeLimit;
+        Connection = Open(database);
+        Database = store.Resolve(database)!;
+    }
+
+    /// <summary>每批语句最长执行时间（数据库页面的查询窗口用；学生程序里由沙箱的 CPU 时间限制兜底）</summary>
+    public TimeSpan? TimeLimit { get; }
+
+    private SqliteConnection Open(string database)
+    {
+        var connection = Store.Open(database);
+        if (TimeLimit != null)
+        {
+            // 每执行一千条虚拟机指令检查一次，超时就中断（SQLite 报 interrupted）
+            SQLitePCL.raw.sqlite3_progress_handler(connection.Handle, 1000, _ => Environment.TickCount64 > _deadline ? 1 : 0, null);
+        }
+        return connection;
+    }
+
+    public DatabaseStore Store { get; }
+    public SqliteConnection Connection { get; private set; }
+    public string Database { get; private set; }
+    public bool InTransaction => _transaction != null;
+
+    public TableInfo? Lookup(string table) => DatabaseStore.GetTable(Connection, table);
+
+    public void ChangeDatabase(string name)
+    {
+        if (Store.Resolve(name) == null) throw SqlException.DatabaseNotFound(name);
+        if (_transaction != null) throw new SqlException(226, "在多语句事务内不允许使用 USE 语句。");
+        var next = Open(name);
+        Connection.Dispose();
+        Connection = next;
+        Database = Store.Resolve(name)!;
+    }
+
+    public void BeginTransaction()
+    {
+        if (_transaction != null) throw new InvalidOperationException("SqlConnection 不支持并行事务。");
+        _transaction = Connection.BeginTransaction();
+    }
+
+    public void Commit()
+    {
+        _transaction?.Commit();
+        _transaction = null;
+    }
+
+    public void Rollback()
+    {
+        _transaction?.Rollback();
+        _transaction = null;
+    }
+
+    /// <summary>执行一批语句；parameter 按名字（带不带 @ 都行）取参数值</summary>
+    public BatchResult Execute(string sql, Func<string, (bool Found, object? Value)> parameter)
+    {
+        var statements = Translator.Parse(sql);
+        if (TimeLimit is { } limit) _deadline = Environment.TickCount64 + (long)limit.TotalMilliseconds;
+        var results = new List<QueryResult>();
+        var affected = -1;
+        foreach (var parsed in statements)
+        {
+            var statement = Translate(parsed);
+            switch (statement)
+            {
+                case CreateDatabase create:
+                    Store.Create(create.Name);
+                    break;
+                case DropDatabases drop:
+                    foreach (var name in drop.Names)
+                    {
+                        if (string.Equals(Store.Resolve(name), Database, StringComparison.OrdinalIgnoreCase)) throw SqlException.DatabaseInUse(name);
+                        Store.Drop(name);
+                    }
+                    break;
+                case UseDatabase use:
+                    ChangeDatabase(use.Name);
+                    break;
+                case SqliteStatement run:
+                    var (result, changes) = Run(run, parameter);
+                    if (result != null) results.Add(result);
+                    else if (changes >= 0) affected = Math.Max(affected, 0) + changes;
+                    break;
+            }
+        }
+        return new BatchResult(results, affected);
+    }
+
+    private Statement Translate(TSqlStatement statement)
+    {
+        try
+        {
+            return Translator.Translate(statement, Lookup);
+        }
+        catch (SqliteException ex)
+        {
+            throw Map(ex);
+        }
+    }
+
+    private (QueryResult? Result, int Changes) Run(SqliteStatement statement, Func<string, (bool Found, object? Value)> parameter)
+    {
+        using var command = Connection.CreateCommand();
+        command.Transaction = _transaction;
+        command.CommandText = statement.Sql;
+        foreach (var name in statement.Parameters)
+        {
+            var (found, value) = parameter(name);
+            if (!found) throw SqlException.UndeclaredVariable(name);
+            command.Parameters.AddWithValue(name, Values.ToStorage(value) ?? DBNull.Value);
+        }
+
+        // 建表等语句和元数据一起提交；已经在学生的事务里时就用那个事务
+        var own = _transaction == null && statement.AfterExecute != null ? Connection.BeginTransaction() : null;
+        if (own != null) command.Transaction = own;
+        try
+        {
+            QueryResult? result = null;
+            int changes;
+            if (statement.IsQuery)
+            {
+                result = Read(command);
+                changes = -1;
+            }
+            else
+            {
+                changes = command.ExecuteNonQuery();
+                statement.AfterExecute?.Invoke(Connection);
+                if (statement.AfterExecute != null) changes = -1;
+            }
+            own?.Commit();
+            return (result, changes);
+        }
+        catch (SqliteException ex)
+        {
+            own?.Rollback();
+            throw Map(ex);
+        }
+        finally
+        {
+            own?.Dispose();
+        }
+    }
+
+    private QueryResult Read(SqliteCommand command)
+    {
+        using var reader = command.ExecuteReader();
+        var schema = reader.GetSchemaTable();
+        var tables = new Dictionary<string, TableInfo?>(StringComparer.OrdinalIgnoreCase);
+        var columns = new List<ResultColumn>();
+        for (var i = 0; i < reader.FieldCount; i++)
+        {
+            var row = schema.Rows[i];
+            var baseTable = row["BaseTableName"] as string;
+            var baseColumn = row["BaseColumnName"] as string;
+            ColumnInfo? info = null;
+            if (!string.IsNullOrEmpty(baseTable) && !string.IsNullOrEmpty(baseColumn))
+            {
+                if (!tables.TryGetValue(baseTable, out var table)) tables[baseTable] = table = Lookup(baseTable);
+                info = table?.Find(baseColumn);
+            }
+            columns.Add(new ResultColumn(reader.GetName(i), info?.Type, info != null ? baseTable : null, info?.Name,
+                info?.PrimaryKey ?? false, info?.Identity ?? false, info?.Nullable ?? true));
+        }
+        var rows = new List<object[]>();
+        while (reader.Read())
+        {
+            var values = new object[reader.FieldCount];
+            reader.GetValues(values);
+            for (var i = 0; i < values.Length; i++) values[i] = Values.FromStorage(values[i], columns[i].Type);
+            rows.Add(values);
+        }
+        return new QueryResult(columns, rows);
+    }
+
+    /// <summary>SQLite 的报错转成 SQL Server 的错误号和中文信息</summary>
+    private SqlException Map(SqliteException ex)
+    {
+        if (Functions.TakePending() is { } pending) return pending;
+        var message = ex.Message;
+        Match m;
+        if ((m = Regex.Match(message, @"no such table: (?:main\.)?(.+?)'?$")).Success) return SqlException.InvalidObject(m.Groups[1].Value);
+        // SQLite 对写错的列名会附带"是不是想写字符串"的提示，只取列名本身
+        if ((m = Regex.Match(message, @"no such column: ""?([^""\s']+)")).Success) return SqlException.InvalidColumn(m.Groups[1].Value);
+        if ((m = Regex.Match(message, @"ambiguous column name: (.+?)'?$")).Success) return SqlException.AmbiguousColumn(m.Groups[1].Value);
+        if ((m = Regex.Match(message, @"UNIQUE constraint failed: (\w+)\.")).Success) return SqlException.DuplicateKey(m.Groups[1].Value);
+        if ((m = Regex.Match(message, @"NOT NULL constraint failed: (.+?)\.(.+?)'?$")).Success)
+            return SqlException.NullNotAllowed(m.Groups[2].Value, $"{Database}.dbo.{m.Groups[1].Value}");
+        if (message.Contains("CHECK constraint failed: trunc:")) return SqlException.Truncated();
+        if ((m = Regex.Match(message, @"CHECK constraint failed: bit:(.+?)'?$")).Success) return new SqlException(245, $"列 '{m.Groups[1].Value}' 是 bit 类型，只能保存 0、1 或 NULL。");
+        if ((m = Regex.Match(message, @"cannot store (\w+) value in (\w+) column (.+?)\.(.+?)'?$")).Success)
+        {
+            var type = Lookup(m.Groups[3].Value)?.Find(m.Groups[4].Value)?.Type.Name ?? m.Groups[2].Value.ToLowerInvariant();
+            return new SqlException(245, $"将数据插入列 '{m.Groups[4].Value}' 时，无法把值转换成数据类型 {type}。");
+        }
+        if (message.Contains("database or disk is full")) return new SqlException(1105, "数据库已满：每个数据库最多约 50 MB。");
+        if (message.Contains("misuse of aggregate")) return new SqlException(147, "聚合不应出现在 WHERE 子句中，除非该聚合位于 HAVING 子句或选择列表所包含的子查询中。");
+        if (message.Contains("interrupted")) return new SqlException(-2, $"执行超时：查询超过 {TimeLimit?.TotalSeconds ?? 0} 秒，已停止。检查是否缺少 WHERE 条件或连接条件。");
+        if (message.Contains("database is locked")) return new SqlException(1222, "已超过了锁请求超时时段：数据库正被其他程序修改，请稍后再试。");
+        return new SqlException(50000, "执行出错：" + message.Replace("SQLite Error ", "").Trim());
+    }
+
+    public void Dispose()
+    {
+        _transaction?.Dispose();
+        Connection.Dispose();
+    }
+}

runtime/Sim.Data/Engine/TSqlType.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Globalization;
+using System.Text.RegularExpressions;
+
+namespace Sim.Data.Engine;
+
+/// <summary>
+/// 一列的 T-SQL 数据类型，如 varchar(50)、int、datetime。
+/// SQLite 表用 STRICT 模式保存（类型见 <see cref="StorageType"/>），原始的 T-SQL 类型记在元数据表里，
+/// 读取时按它把值还原成 SQL Server 返回的 .NET 类型。
+/// </summary>
+internal sealed record TSqlType(string Name, int? Length = null, bool IsMax = false, int? Precision = null, int? Scale = null)
+{
+    public static readonly TSqlType Unknown = new("sql_variant");
+
+    /// <summary>如 varchar(50)、varchar(MAX)、decimal(10, 2)</summary>
+    public override string ToString() => Name switch
+    {
+        _ when IsMax => $"{Name}(MAX)",
+        _ when Length != null => $"{Name}({Length})",
+        "decimal" or "numeric" when Precision != null => Scale != null ? $"{Name}({Precision}, {Scale})" : $"{Name}({Precision})",
+        _ => Name,
+    };
+
+    public static TSqlType Parse(string text)
+    {
+        var m = Regex.Match(text.Trim(), @"^(\w+)\s*(?:\(\s*(MAX|\d+)\s*(?:,\s*(\d+)\s*)?\))?$", RegexOptions.IgnoreCase);
+        if (!m.Success) return Unknown;
+        var name = m.Groups[1].Value.ToLowerInvariant();
+        if (!m.Groups[2].Success) return new TSqlType(name);
+        if (m.Groups[2].Value.Equals("MAX", StringComparison.OrdinalIgnoreCase)) return new TSqlType(name, IsMax: true);
+        var first = int.Parse(m.Groups[2].Value, CultureInfo.InvariantCulture);
+        if (name is "decimal" or "numeric")
+            return new TSqlType(name, Precision: first, Scale: m.Groups[3].Success ? int.Parse(m.Groups[3].Value, CultureInfo.InvariantCulture) : null);
+        return new TSqlType(name, Length: first);
+    }
+
+    public bool IsString => Name is "char" or "varchar" or "nchar" or "nvarchar" or "text" or "ntext";
+    public bool IsDateTime => Name is "datetime" or "datetime2" or "smalldatetime";
+    public bool IsDate => Name == "date";
+    public bool IsInteger => Name is "int" or "bigint" or "smallint" or "tinyint";
+    public bool IsBit => Name == "bit";
+    public bool IsFloat => Name is "float" or "real" or "decimal" or "numeric" or "money" or "smallmoney";
+    public bool IsBinary => Name is "binary" or "varbinary" or "image";
+
+    /// <summary>SQLite STRICT 表的列类型</summary>
+    public string StorageType => this switch
+    {
+        { IsInteger: true } or { IsBit: true } => "INTEGER",
+        { IsFloat: true } => "REAL",
+        { IsBinary: true } => "BLOB",
+        { IsString: true } or { IsDateTime: true } or { IsDate: true } or { Name: "time" or "uniqueidentifier" } => "TEXT",
+        _ => "ANY",
+    };
+
+    /// <summary>字符串列的长度上限（超出时和 SQL Server 一样报"将截断字符串"）</summary>
+    public int? MaxLength => IsString && !IsMax && Name is not ("text" or "ntext") ? Length ?? 1 : null;
+
+    /// <summary>SQL Server 返回这一列时的 .NET 类型（DataTable 的列类型、DataGridView 的显示方式由它决定）</summary>
+    public Type ClrType => Name switch
+    {
+        "int" => typeof(int),
+        "bigint" => typeof(long),
+        "smallint" => typeof(short),
+        "tinyint" => typeof(byte),
+        "bit" => typeof(bool),
+        "float" => typeof(double),
+        "real" => typeof(float),
+        "decimal" or "numeric" or "money" or "smallmoney" => typeof(decimal),
+        "date" or "datetime" or "datetime2" or "smalldatetime" => typeof(DateTime),
+        "time" => typeof(TimeSpan),
+        "uniqueidentifier" => typeof(Guid),
+        "binary" or "varbinary" or "image" => typeof(byte[]),
+        "char" or "varchar" or "nchar" or "nvarchar" or "text" or "ntext" => typeof(string),
+        _ => typeof(object),
+    };
+
+    /// <summary>平台支持的 T-SQL 类型（建表时检查）</summary>
+    public static bool IsSupported(string name) => name is
+        "int" or "bigint" or "smallint" or "tinyint" or "bit" or "float" or "real" or "decimal" or "numeric" or "money" or "smallmoney"
+        or "date" or "datetime" or "datetime2" or "smalldatetime" or "time" or "uniqueidentifier"
+        or "binary" or "varbinary" or "image" or "char" or "varchar" or "nchar" or "nvarchar" or "text" or "ntext";
+}

runtime/Sim.Data/Engine/Translator.cs

@@ -0,0 +1,925 @@
+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using Microsoft.SqlServer.TransactSql.ScriptDom;
+
+namespace Sim.Data.Engine;
+
+/// <summary>翻译好的一条语句</summary>
+internal abstract record Statement;
+
+/// <summary>在 SQLite 上执行的语句；IsQuery 表示有结果集；AfterExecute 在同一事务里更新元数据</summary>
+internal sealed record SqliteStatement(string Sql, bool IsQuery, IReadOnlyList<string> Parameters, Action<Microsoft.Data.Sqlite.SqliteConnection>? AfterExecute = null) : Statement;
+
+internal sealed record CreateDatabase(string Name) : Statement;
+internal sealed record DropDatabases(IReadOnlyList<string> Names) : Statement;
+internal sealed record UseDatabase(string Name) : Statement;
+/// <summary>SET NOCOUNT ON 之类不影响结果的语句</summary>
+internal sealed record IgnoredStatement : Statement;
+
+/// <summary>
+/// 把 T-SQL（SQL Server 2008 语法）转写成 SQLite 语句。只转写认识的语法节点，其余一律报"平台暂不支持"，
+/// 生成的 SQL 里只会出现这里写出的关键字和 tsql_ 函数，学生的 SQL 无法借此执行 SQLite 特有的命令。
+/// 一批语句先整体解析（语法错误和 SQL Server 一样在执行前报出），执行时再逐条转写（后面的语句能用到前面刚建的表）。
+/// </summary>
+internal sealed class Translator
+{
+    private readonly Func<string, TableInfo?> _lookup;
+    private readonly StringBuilder _sql = new();
+    private readonly List<string> _parameters = new();
+
+    private Translator(Func<string, TableInfo?> lookup) => _lookup = lookup;
+
+    /// <summary>解析整批语句；有语法错误时抛出 SqlException 102</summary>
+    public static IReadOnlyList<TSqlStatement> Parse(string sql)
+    {
+        var parser = new TSql100Parser(initialQuotedIdentifiers: true);
+        var fragment = parser.Parse(new StringReader(sql), out var errors);
+        if (errors.Count > 0) throw SyntaxError(sql, errors[0]);
+        return ((TSqlScript)fragment).Batches.SelectMany(b => b.Statements).ToList();
+    }
+
+    /// <summary>转写一条语句；lookup 按表名取表结构（INSERT 跳过自增列、按列类型转换值时要用）</summary>
+    public static Statement Translate(TSqlStatement statement, Func<string, TableInfo?> lookup) => new Translator(lookup).Statement(statement);
+
+    private static SqlException SyntaxError(string sql, ParseError error)
+    {
+        // ParseError 的信息是英文，这里取出错位置的词，按 SQL Server 中文版的格式报
+        var rest = error.Offset < sql.Length ? sql[error.Offset..] : "";
+        var token = new string(rest.TakeWhile(c => !char.IsWhiteSpace(c) && c is not (',' or ')' or '(' or ';')).ToArray());
+        if (token.Length == 0 && rest.Length > 0) token = rest[..1];
+        if (token.Length == 0) return new SqlException(102, "语句不完整，结尾附近有语法错误。", error.Line);
+        if (token.StartsWith('\'')) return new SqlException(105, $"字符串 '{token.Trim('\'')}' 后的引号不完整。", error.Line);
+        return SqlException.Syntax(token, error.Line);
+    }
+
+    // ---------- 语句 ----------
+
+    private Statement Statement(TSqlStatement statement)
+    {
+        switch (statement)
+        {
+            case SelectStatement select:
+                if (select.Into != null) throw SqlException.NotSupported("SELECT ... INTO");
+                if (select.WithCtesAndXmlNamespaces != null) throw SqlException.NotSupported("WITH（公用表表达式）");
+                Query(select.QueryExpression);
+                return Done(isQuery: true);
+            case InsertStatement insert:
+                Insert(insert.InsertSpecification);
+                return Done(isQuery: false);
+            case UpdateStatement update:
+                Update(update.UpdateSpecification);
+                return Done(isQuery: false);
+            case DeleteStatement delete:
+                Delete(delete.DeleteSpecification);
+                return Done(isQuery: false);
+            case CreateTableStatement create:
+                return CreateTable(create);
+            case DropTableStatement drop:
+                return DropTable(drop);
+            case AlterTableAddTableElementStatement alter:
+                return AddColumns(alter);
+            case TruncateTableStatement truncate:
+            {
+                var table = RequireTable(truncate.TableName);
+                _sql.Append("DELETE FROM ").Append(Values.QuoteName(table.Name));
+                return Done(isQuery: false);
+            }
+            case CreateDatabaseStatement create:
+                return new CreateDatabase(create.DatabaseName.Value);
+            case DropDatabaseStatement drop:
+                return new DropDatabases(drop.Databases.Select(d => d.Value).ToList());
+            case UseStatement use:
+                return new UseDatabase(use.DatabaseName.Value);
+            case PredicateSetStatement:
+                return new IgnoredStatement();
+            default:
+                throw SqlException.NotSupported(StatementName(statement));
+        }
+    }
+
+    private SqliteStatement Done(bool isQuery, Action<Microsoft.Data.Sqlite.SqliteConnection>? after = null) =>
+        new(_sql.ToString(), isQuery, _parameters.Distinct(StringComparer.OrdinalIgnoreCase).ToList(), after);
+
+    private static string StatementName(TSqlStatement statement) => statement.GetType().Name.Replace("Statement", "") switch
+    {
+        "CreateProcedure" or "AlterProcedure" => "存储过程",
+        "CreateView" or "AlterView" => "视图",
+        "CreateTrigger" => "触发器",
+        "CreateIndex" => "CREATE INDEX",
+        "DeclareVariable" => "DECLARE 变量",
+        "If" => "IF 语句",
+        "While" => "WHILE 循环",
+        "BeginEndBlock" => "BEGIN ... END",
+        "Execute" => "EXEC",
+        var name => name + " 语句",
+    };
+
+    // ---------- 查询 ----------
+
+    private void Query(QueryExpression query)
+    {
+        switch (query)
+        {
+            case QuerySpecification spec:
+                QuerySpec(spec);
+                break;
+            case BinaryQueryExpression binary:
+                Query(binary.FirstQueryExpression);
+                _sql.Append(binary.BinaryQueryExpressionType switch
+                {
+                    BinaryQueryExpressionType.Union => binary.All ? " UNION ALL " : " UNION ",
+                    BinaryQueryExpressionType.Except => " EXCEPT ",
+                    _ => " INTERSECT ",
+                });
+                Query(binary.SecondQueryExpression);
+                OrderBy(binary.OrderByClause);
+                break;
+            case QueryParenthesisExpression paren:
+                _sql.Append("SELECT * FROM (");
+                Query(paren.QueryExpression);
+                _sql.Append(')');
+                OrderBy(paren.OrderByClause);
+                break;
+            default:
+                throw SqlException.NotSupported(query.GetType().Name);
+        }
+    }
+
+    private void QuerySpec(QuerySpecification spec)
+    {
+        _sql.Append("SELECT ");
+        if (spec.UniqueRowFilter == UniqueRowFilter.Distinct) _sql.Append("DISTINCT ");
+        for (var i = 0; i < spec.SelectElements.Count; i++)
+        {
+            if (i > 0) _sql.Append(", ");
+            SelectElement(spec.SelectElements[i]);
+        }
+        if (spec.FromClause != null)
+        {
+            _sql.Append(" FROM ");
+            for (var i = 0; i < spec.FromClause.TableReferences.Count; i++)
+            {
+                if (i > 0) _sql.Append(", ");
+                TableReference(spec.FromClause.TableReferences[i]);
+            }
+        }
+        Where(spec.WhereClause);
+        if (spec.GroupByClause != null)
+        {
+            _sql.Append(" GROUP BY ");
+            for (var i = 0; i < spec.GroupByClause.GroupingSpecifications.Count; i++)
+            {
+                if (i > 0) _sql.Append(", ");
+                if (spec.GroupByClause.GroupingSpecifications[i] is not ExpressionGroupingSpecification group) throw SqlException.NotSupported("这种 GROUP BY 写法");
+                Expression(group.Expression);
+            }
+        }
+        if (spec.HavingClause != null)
+        {
+            _sql.Append(" HAVING ");
+            Boolean(spec.HavingClause.SearchCondition);
+        }
+        OrderBy(spec.OrderByClause);
+        Top(spec.TopRowFilter);
+    }
+
+    private void SelectElement(SelectElement element)
+    {
+        switch (element)
+        {
+            case SelectStarExpression star:
+                if (star.Qualifier != null) _sql.Append(Values.QuoteName(star.Qualifier.Identifiers[^1].Value)).Append('.');
+                _sql.Append('*');
+                break;
+            case SelectScalarExpression scalar:
+                Expression(scalar.Expression);
+                if (scalar.ColumnName != null)
+                {
+                    // as '编号' 和 as 编号 都按列名处理
+                    _sql.Append(" AS ").Append(Values.QuoteName(scalar.ColumnName.Value));
+                }
+                else if (scalar.Expression is not ColumnReferenceExpression)
+                {
+                    // 和 SQL Server 一样，没有起别名的表达式列没有列名（DataTable 里叫 Column1）
+                    _sql.Append(" AS \"\"");
+                }
+                break;
+            default:
+                throw SqlException.NotSupported("SELECT @变量 = ...");
+        }
+    }
+
+    private void TableReference(TableReference reference)
+    {
+        switch (reference)
+        {
+            case NamedTableReference named:
+                var table = RequireTable(named.SchemaObject);
+                _sql.Append(Values.QuoteName(table.Name));
+                if (named.Alias != null) _sql.Append(" AS ").Append(Values.QuoteName(named.Alias.Value));
+                break;
+            case QualifiedJoin join:
+                TableReference(join.FirstTableReference);
+                _sql.Append(join.QualifiedJoinType switch
+                {
+                    QualifiedJoinType.Inner => " INNER JOIN ",
+                    QualifiedJoinType.LeftOuter => " LEFT JOIN ",
+                    QualifiedJoinType.RightOuter => " RIGHT JOIN ",
+                    _ => " FULL JOIN ",
+                });
+                TableReference(join.SecondTableReference);
+                _sql.Append(" ON ");
+                Boolean(join.SearchCondition);
+                break;
+            case UnqualifiedJoin cross when cross.UnqualifiedJoinType == UnqualifiedJoinType.CrossJoin:
+                TableReference(cross.FirstTableReference);
+                _sql.Append(" CROSS JOIN ");
+                TableReference(cross.SecondTableReference);
+                break;
+            case QueryDerivedTable derived:
+                _sql.Append('(');
+                Query(derived.QueryExpression);
+                _sql.Append(')');
+                if (derived.Alias != null) _sql.Append(" AS ").Append(Values.QuoteName(derived.Alias.Value));
+                break;
+            default:
+                throw SqlException.NotSupported("这种 FROM 写法");
+        }
+    }
+
+    private void Where(WhereClause? where)
+    {
+        if (where == null) return;
+        if (where.Cursor != null) throw SqlException.NotSupported("游标");
+        _sql.Append(" WHERE ");
+        Boolean(where.SearchCondition);
+    }
+
+    private void OrderBy(OrderByClause? orderBy)
+    {
+        if (orderBy == null) return;
+        _sql.Append(" ORDER BY ");
+        for (var i = 0; i < orderBy.OrderByElements.Count; i++)
+        {
+            if (i > 0) _sql.Append(", ");
+            Expression(orderBy.OrderByElements[i].Expression);
+            if (orderBy.OrderByElements[i].SortOrder == SortOrder.Descending) _sql.Append(" DESC");
+        }
+    }
+
+    private void Top(TopRowFilter? top)
+    {
+        if (top == null) return;
+        if (top.Percent) throw SqlException.NotSupported("TOP ... PERCENT");
+        if (top.WithTies) throw SqlException.NotSupported("TOP ... WITH TIES");
+        _sql.Append(" LIMIT ");
+        Expression(top.Expression);
+    }
+
+    // ---------- 增删改 ----------
+
+    private void Insert(InsertSpecification spec)
+    {
+        if (spec.TopRowFilter != null) throw SqlException.NotSupported("INSERT TOP");
+        if (spec.Target is not NamedTableReference target) throw SqlException.NotSupported("这种 INSERT 写法");
+        var table = RequireTable(target.SchemaObject);
+
+        // 列：写了列名就按列名；没写就是除自增列以外的全部列（和 SQL Server 一样）
+        List<ColumnInfo> columns;
+        if (spec.Columns.Count > 0)
+        {
+            columns = spec.Columns.Select(c => RequireColumn(table, c.MultiPartIdentifier.Identifiers[^1].Value)).ToList();
+            if (columns.FirstOrDefault(c => c.Identity) != null) throw SqlException.IdentityInsert(table.Name);
+        }
+        else
+        {
+            columns = table.Columns.Where(c => !c.Identity).ToList();
+        }
+
+        _sql.Append("INSERT INTO ").Append(Values.QuoteName(table.Name));
+        switch (spec.InsertSource)
+        {
+            case ValuesInsertSource { IsDefaultValues: true }:
+                _sql.Append(" DEFAULT VALUES");
+                break;
+            case ValuesInsertSource values:
+                _sql.Append(" (").Append(string.Join(", ", columns.Select(c => Values.QuoteName(c.Name)))).Append(") VALUES ");
+                for (var r = 0; r < values.RowValues.Count; r++)
+                {
+                    var row = values.RowValues[r].ColumnValues;
+                    if (row.Count != columns.Count) throw SqlException.ColumnCountMismatch();
+                    if (r > 0) _sql.Append(", ");
+                    _sql.Append('(');
+                    for (var i = 0; i < row.Count; i++)
+                    {
+                        if (i > 0) _sql.Append(", ");
+                        ValueFor(columns[i], row[i]);
+                    }
+                    _sql.Append(')');
+                }
+                break;
+            case SelectInsertSource select:
+                _sql.Append(" (").Append(string.Join(", ", columns.Select(c => Values.QuoteName(c.Name)))).Append(") ");
+                Query(select.Select);
+                break;
+            default:
+                throw SqlException.NotSupported("INSERT ... EXEC");
+        }
+    }
+
+    private void Update(UpdateSpecification spec)
+    {
+        if (spec.FromClause != null) throw SqlException.NotSupported("UPDATE ... FROM");
+        if (spec.Target is not NamedTableReference target) throw SqlException.NotSupported("这种 UPDATE 写法");
+        var table = RequireTable(target.SchemaObject);
+        _sql.Append("UPDATE ").Append(Values.QuoteName(table.Name)).Append(" SET ");
+        for (var i = 0; i < spec.SetClauses.Count; i++)
+        {
+            if (spec.SetClauses[i] is not AssignmentSetClause { Column: not null } set || set.AssignmentKind != AssignmentKind.Equals)
+                throw SqlException.NotSupported("这种 SET 写法");
+            var column = RequireColumn(table, set.Column.MultiPartIdentifier.Identifiers[^1].Value);
+            if (column.Identity) throw new SqlException(8102, $"无法更新标识列 '{column.Name}'。");
+            if (i > 0) _sql.Append(", ");
+            _sql.Append(Values.QuoteName(column.Name)).Append(" = ");
+            ValueFor(column, set.NewValue);
+        }
+        LimitedWhere(table, spec.WhereClause, spec.TopRowFilter);
+    }
+
+    private void Delete(DeleteSpecification spec)
+    {
+        if (spec.FromClause != null) throw SqlException.NotSupported("DELETE ... FROM ... JOIN");
+        if (spec.Target is not NamedTableReference target) throw SqlException.NotSupported("这种 DELETE 写法");
+        var table = RequireTable(target.SchemaObject);
+        _sql.Append("DELETE FROM ").Append(Values.QuoteName(table.Name));
+        LimitedWhere(table, spec.WhereClause, spec.TopRowFilter);
+    }
+
+    /// <summary>UPDATE TOP (n) / DELETE TOP (n)：SQLite 不支持，改成按 rowid 限定前 n 行</summary>
+    private void LimitedWhere(TableInfo table, WhereClause? where, TopRowFilter? top)
+    {
+        if (top == null)
+        {
+            Where(where);
+            return;
+        }
+        _sql.Append(" WHERE rowid IN (SELECT rowid FROM ").Append(Values.QuoteName(table.Name));
+        Where(where);
+        Top(top);
+        _sql.Append(')');
+    }
+
+    /// <summary>插入、修改的值按目标列的类型转换（日期统一格式、字符串转数字失败时报和 SQL Server 一样的错）</summary>
+    private void ValueFor(ColumnInfo column, ScalarExpression value)
+    {
+        if (value is NullLiteral || value is DefaultLiteral)
+        {
+            _sql.Append(value is NullLiteral ? "NULL" : throw SqlException.NotSupported("VALUES 里的 DEFAULT"));
+            return;
+        }
+        var type = column.Type;
+        if (type.IsString || type.IsBinary || type.StorageType == "ANY")
+        {
+            Expression(value);
+            return;
+        }
+        _sql.Append("tsql_convert(").Append(Values.Quote(type.Name)).Append(", NULL, ");
+        Expression(value);
+        _sql.Append(", NULL)");
+    }
+
+    // ---------- 建表、删表、加列 ----------
+
+    private Statement CreateTable(CreateTableStatement create)
+    {
+        var name = TableName(create.SchemaObjectName);
+        if (DatabaseStore.IsHidden(name)) throw new SqlException(102, $"表名 '{name}' 是平台保留的名字，请换一个。");
+        if (_lookup(name) != null) throw SqlException.ObjectExists(name);
+        var definition = create.Definition;
+
+        var primaryKey = definition.TableConstraints.OfType<UniqueConstraintDefinition>().FirstOrDefault(c => c.IsPrimaryKey);
+        var keyColumns = primaryKey?.Columns.Select(c => c.Column.MultiPartIdentifier.Identifiers[^1].Value).ToList() ?? new List<string>();
+        var columns = definition.ColumnDefinitions.Select(c => Column(c, keyColumns)).ToList();
+        if (columns.Count(c => c.Identity) > 1) throw new SqlException(2744, $"为表 '{name}' 指定了多个标识列。只允许为每个表指定一个标识列。");
+        foreach (var key in keyColumns)
+            if (columns.All(c => !string.Equals(c.Name, key, StringComparison.OrdinalIgnoreCase))) throw SqlException.InvalidColumn(key);
+
+        _sql.Append("CREATE TABLE ").Append(Values.QuoteName(name)).Append(" (");
+        _sql.Append(string.Join(", ", columns.Select(c => ColumnSql(c, single: keyColumns.Count <= 1 && c.PrimaryKey))));
+        if (keyColumns.Count > 1) _sql.Append(", PRIMARY KEY (").Append(string.Join(", ", keyColumns.Select(Values.QuoteName))).Append(')');
+        _sql.Append(") STRICT");
+        return Done(isQuery: false, after: c => DatabaseStore.SaveColumns(c, name, columns));
+    }
+
+    private Statement AddColumns(AlterTableAddTableElementStatement alter)
+    {
+        var table = RequireTable(alter.SchemaObjectName);
+        if (alter.Definition.TableConstraints.Count > 0) throw SqlException.NotSupported("ALTER TABLE 添加约束");
+        var columns = alter.Definition.ColumnDefinitions.Select(c => Column(c, new List<string>())).ToList();
+        foreach (var column in columns)
+        {
+            if (table.Find(column.Name) != null) throw new SqlException(2705, $"各表中的列名必须唯一。在表 '{table.Name}' 中多次指定了列名 '{column.Name}'。");
+            if (column.Identity || column.PrimaryKey) throw SqlException.NotSupported("ALTER TABLE 添加主键或标识列");
+            if (_sql.Length > 0) _sql.Append("; ");
+            _sql.Append("ALTER TABLE ").Append(Values.QuoteName(table.Name)).Append(" ADD COLUMN ").Append(ColumnSql(column, single: false));
+        }
+        return Done(isQuery: false, after: c => DatabaseStore.SaveColumns(c, table.Name, columns, table.Columns.Count));
+    }
+
+    private Statement DropTable(DropTableStatement drop)
+    {
+        var tables = drop.Objects.Select(o => _lookup(TableName(o)) ?? throw SqlException.CannotDropTable(TableName(o))).ToList();
+        _sql.Append(string.Join("; ", tables.Select(t => "DROP TABLE " + Values.QuoteName(t.Name))));
+        return Done(isQuery: false, after: c =>
+        {
+            foreach (var table in tables) DatabaseStore.DeleteColumns(c, table.Name);
+        });
+    }
+
+    private ColumnInfo Column(ColumnDefinition definition, List<string> keyColumns)
+    {
+        var name = definition.ColumnIdentifier.Value;
+        if (definition.DataType is not SqlDataTypeReference dataType) throw new SqlException(2715, $"第 1 个列、参数或变量: 找不到数据类型 {definition.DataType?.Name?.BaseIdentifier?.Value}。");
+        var type = TypeOf(dataType);
+        var identity = definition.IdentityOptions != null;
+        if (identity && !type.IsInteger) throw new SqlException(2749, $"标识列 '{name}' 的数据类型必须是 int、bigint、smallint 或 tinyint。");
+        var primaryKey = keyColumns.Any(k => string.Equals(k, name, StringComparison.OrdinalIgnoreCase))
+            || definition.Constraints.OfType<UniqueConstraintDefinition>().Any(c => c.IsPrimaryKey);
+        var nullable = !identity && !primaryKey && definition.Constraints.OfType<NullableConstraintDefinition>().All(c => c.Nullable);
+        if (definition.Constraints.Any(c => c is not (NullableConstraintDefinition or UniqueConstraintDefinition { IsPrimaryKey: true })))
+            throw SqlException.NotSupported("PRIMARY KEY、NULL / NOT NULL 以外的列约束");
+
+        string? defaultText = null;
+        if (definition.DefaultConstraint != null) defaultText = DefaultSql(definition.DefaultConstraint.Expression);
+        if (identity && definition.IdentityOptions!.IdentitySeed is IntegerLiteral seed && seed.Value != "1")
+            throw SqlException.NotSupported("从 1 以外的数开始的 IDENTITY");
+        return new ColumnInfo(name, type, nullable, identity, primaryKey, defaultText);
+    }
+
+    private static TSqlType TypeOf(SqlDataTypeReference dataType)
+    {
+        var name = dataType.SqlDataTypeOption.ToString().ToLowerInvariant();
+        if (!TSqlType.IsSupported(name)) throw SqlException.NotSupported($"数据类型 {name}");
+        var parameters = dataType.Parameters;
+        if (parameters.Count == 0) return new TSqlType(name);
+        if (parameters[0] is MaxLiteral) return new TSqlType(name, IsMax: true);
+        var first = int.Parse(parameters[0].Value, CultureInfo.InvariantCulture);
+        if (name is "decimal" or "numeric")
+            return new TSqlType(name, Precision: first, Scale: parameters.Count > 1 ? int.Parse(parameters[1].Value, CultureInfo.InvariantCulture) : null);
+        return new TSqlType(name, Length: first);
+    }
+
+    /// <summary>SQLite 的列定义：STRICT 类型 + 约束；字符串长度和 bit 取值用 CHECK 实现（约束名用来认出是哪种错误）</summary>
+    private static string ColumnSql(ColumnInfo column, bool single)
+    {
+        var sql = new StringBuilder(Values.QuoteName(column.Name));
+        if (column.Identity && single)
+        {
+            sql.Append(" INTEGER PRIMARY KEY AUTOINCREMENT");
+            return sql.ToString();
+        }
+        if (column.Identity) throw SqlException.NotSupported("标识列不是唯一主键的表");
+        sql.Append(' ').Append(column.Type.StorageType);
+        if (single && column.PrimaryKey) sql.Append(" PRIMARY KEY");
+        if (!column.Nullable) sql.Append(" NOT NULL");
+        if (column.Type.StorageType == "TEXT") sql.Append(" COLLATE NOCASE");
+        if (column.Default != null) sql.Append(" DEFAULT ").Append(column.Default);
+        if (column.Type.MaxLength is { } max)
+            sql.Append(" CONSTRAINT ").Append(Values.QuoteName("trunc:" + column.Name)).Append(" CHECK (length(").Append(Values.QuoteName(column.Name)).Append(") <= ").Append(max).Append(')');
+        if (column.Type.IsBit)
+            sql.Append(" CONSTRAINT ").Append(Values.QuoteName("bit:" + column.Name)).Append(" CHECK (").Append(Values.QuoteName(column.Name)).Append(" IN (0, 1))");
+        return sql.ToString();
+    }
+
+    /// <summary>DEFAULT 只支持常量和 getdate()</summary>
+    private static string DefaultSql(ScalarExpression expression) => Unparen(expression) switch
+    {
+        IntegerLiteral i => i.Value,
+        NumericLiteral n => n.Value,
+        RealLiteral r => r.Value,
+        StringLiteral s => Values.Quote(s.Value),
+        NullLiteral => "NULL",
+        UnaryExpression { UnaryExpressionType: UnaryExpressionType.Negative, Expression: IntegerLiteral or NumericLiteral } u => "-" + ((Literal)u.Expression).Value,
+        FunctionCall f when f.FunctionName.Value.Equals("getdate", StringComparison.OrdinalIgnoreCase) => "(strftime('%Y-%m-%d %H:%M:%S', 'now', 'localtime'))",
+        _ => throw SqlException.NotSupported("这种 DEFAULT 默认值"),
+    };
+
+    private static ScalarExpression Unparen(ScalarExpression expression) =>
+        expression is ParenthesisExpression p ? Unparen(p.Expression) : expression;
+
+    // ---------- 表名、列名 ----------
+
+    /// <summary>dbo.表名、库名.dbo.表名 都取最后一段（跨库访问不支持）</summary>
+    private static string TableName(SchemaObjectName name)
+    {
+        if (name.ServerIdentifier != null) throw SqlException.NotSupported("访问其他服务器上的表");
+        if (name.SchemaIdentifier != null && !name.SchemaIdentifier.Value.Equals("dbo", StringComparison.OrdinalIgnoreCase))
+            throw SqlException.NotSupported($"架构 {name.SchemaIdentifier.Value}（只有 dbo）");
+        return name.BaseIdentifier.Value;
+    }
+
+    private TableInfo RequireTable(SchemaObjectName name)
+    {
+        if (name.DatabaseIdentifier != null) throw SqlException.NotSupported("在一条语句里访问其他数据库的表，请先用 USE 切换数据库");
+        var table = TableName(name);
+        return _lookup(table) ?? throw SqlException.InvalidObject(table);
+    }
+
+    private static ColumnInfo RequireColumn(TableInfo table, string column) => table.Find(column) ?? throw SqlException.InvalidColumn(column);
+
+    // ---------- 表达式 ----------
+
+    private void Expression(ScalarExpression expression)
+    {
+        switch (expression)
+        {
+            case ColumnReferenceExpression column:
+                ColumnReference(column);
+                break;
+            case IntegerLiteral or NumericLiteral or RealLiteral or MoneyLiteral:
+                _sql.Append(((Literal)expression).Value.TrimStart('$', '¥'));
+                break;
+            case StringLiteral s:
+                _sql.Append(Values.Quote(s.Value));
+                break;
+            case NullLiteral:
+                _sql.Append("NULL");
+                break;
+            case BinaryLiteral b:
+                _sql.Append("X'").Append(b.Value[2..]).Append('\'');
+                break;
+            case VariableReference variable:
+                _parameters.Add(variable.Name);
+                _sql.Append(variable.Name);
+                break;
+            case GlobalVariableExpression global when global.Name.Equals("@@IDENTITY", StringComparison.OrdinalIgnoreCase):
+                _sql.Append("last_insert_rowid()");
+                break;
+            case ParenthesisExpression paren:
+                _sql.Append('(');
+                Expression(paren.Expression);
+                _sql.Append(')');
+                break;
+            case UnaryExpression unary:
+                _sql.Append(unary.UnaryExpressionType switch
+                {
+                    UnaryExpressionType.Negative => "-",
+                    UnaryExpressionType.Positive => "+",
+                    _ => "~",
+                });
+                Expression(unary.Expression);
+                break;
+            case BinaryExpression binary:
+                Binary(binary);
+                break;
+            case FunctionCall call:
+                Function(call);
+                break;
+            case LeftFunctionCall left:
+                Call("tsql_left", left.Parameters);
+                break;
+            case RightFunctionCall right:
+                Call("tsql_right", right.Parameters);
+                break;
+            case CastCall cast:
+                Conversion(cast.DataType, cast.Parameter, null);
+                break;
+            case ConvertCall convert:
+                Conversion(convert.DataType, convert.Parameter, convert.Style);
+                break;
+            case CoalesceExpression coalesce:
+                Call("coalesce", coalesce.Expressions);
+                break;
+            case NullIfExpression nullIf:
+                Call("nullif", new[] { nullIf.FirstExpression, nullIf.SecondExpression });
+                break;
+            case SearchedCaseExpression searched:
+                _sql.Append("CASE");
+                foreach (var when in searched.WhenClauses)
+                {
+                    _sql.Append(" WHEN ");
+                    Boolean(when.WhenExpression);
+                    _sql.Append(" THEN ");
+                    Expression(when.ThenExpression);
+                }
+                Else(searched.ElseExpression);
+                break;
+            case SimpleCaseExpression simple:
+                _sql.Append("CASE ");
+                Expression(simple.InputExpression);
+                foreach (var when in simple.WhenClauses)
+                {
+                    _sql.Append(" WHEN ");
+                    Expression(when.WhenExpression);
+                    _sql.Append(" THEN ");
+                    Expression(when.ThenExpression);
+                }
+                Else(simple.ElseExpression);
+                break;
+            case ScalarSubquery subquery:
+                _sql.Append('(');
+                Query(subquery.QueryExpression);
+                _sql.Append(')');
+                break;
+            default:
+                throw SqlException.NotSupported(expression.GetType().Name.Replace("Expression", "") + " 表达式");
+        }
+    }
+
+    private void Else(ScalarExpression? otherwise)
+    {
+        if (otherwise != null)
+        {
+            _sql.Append(" ELSE ");
+            Expression(otherwise);
+        }
+        _sql.Append(" END");
+    }
+
+    private void ColumnReference(ColumnReferenceExpression column)
+    {
+        if (column.ColumnType == ColumnType.Wildcard)
+        {
+            _sql.Append('*');
+            return;
+        }
+        if (column.ColumnType != ColumnType.Regular) throw SqlException.NotSupported(column.ColumnType.ToString());
+        var parts = column.MultiPartIdentifier.Identifiers;
+        // 表名.列名 保留表名（或别名）；库名.dbo.表名.列名 只取最后两段
+        var take = Math.Min(parts.Count, 2);
+        _sql.Append(string.Join(".", parts.Skip(parts.Count - take).Select(p => Values.QuoteName(p.Value))));
+    }
+
+    private void Binary(BinaryExpression binary)
+    {
+        switch (binary.BinaryExpressionType)
+        {
+            // + 要在运行时看两边的类型：字符串连接还是数字相加
+            case BinaryExpressionType.Add:
+                Call("tsql_add", new[] { binary.FirstExpression, binary.SecondExpression });
+                return;
+            case BinaryExpressionType.Divide:
+                Call("tsql_div", new[] { binary.FirstExpression, binary.SecondExpression });
+                return;
+            case BinaryExpressionType.Modulo:
+                Call("tsql_mod", new[] { binary.FirstExpression, binary.SecondExpression });
+                return;
+        }
+        _sql.Append('(');
+        Expression(binary.FirstExpression);
+        _sql.Append(binary.BinaryExpressionType switch
+        {
+            BinaryExpressionType.Subtract => " - ",
+            BinaryExpressionType.Multiply => " * ",
+            BinaryExpressionType.BitwiseAnd => " & ",
+            BinaryExpressionType.BitwiseOr => " | ",
+            _ => throw SqlException.NotSupported("^ 运算"),
+        });
+        Expression(binary.SecondExpression);
+        _sql.Append(')');
+    }
+
+    private void Call(string name, IList<ScalarExpression> arguments)
+    {
+        _sql.Append(name).Append('(');
+        for (var i = 0; i < arguments.Count; i++)
+        {
+            if (i > 0) _sql.Append(", ");
+            Expression(arguments[i]);
+        }
+        _sql.Append(')');
+    }
+
+    private void Conversion(DataTypeReference dataType, ScalarExpression value, ScalarExpression? style)
+    {
+        if (dataType is not SqlDataTypeReference sqlType) throw SqlException.NotSupported($"转换成 {dataType.Name.BaseIdentifier.Value}");
+        var type = TypeOf(sqlType);
+        _sql.Append("tsql_convert(").Append(Values.Quote(type.Name)).Append(", ")
+            .Append(type.IsMax ? "-1" : type.Length?.ToString(CultureInfo.InvariantCulture) ?? (type.IsString ? "30" : "NULL")).Append(", ");
+        Expression(value);
+        _sql.Append(", ");
+        if (style != null) Expression(style);
+        else _sql.Append("NULL");
+        _sql.Append(')');
+    }
+
+    private void Function(FunctionCall call)
+    {
+        if (call.CallTarget != null) throw SqlException.NotSupported("这种函数调用");
+        if (call.OverClause != null) throw SqlException.NotSupported("OVER（开窗函数）");
+        var name = call.FunctionName.Value.ToLowerInvariant();
+        var args = call.Parameters;
+        var distinct = call.UniqueRowFilter == UniqueRowFilter.Distinct ? "DISTINCT " : "";
+
+        void Expect(int min, int max)
+        {
+            if (args.Count < min || args.Count > max)
+                throw new SqlException(174, $"{call.FunctionName.Value} 函数要求有 {(min == max ? min.ToString(CultureInfo.InvariantCulture) : $"{min} 到 {max}")} 个参数。");
+        }
+
+        switch (name)
+        {
+            case "count" or "sum" or "avg" or "min" or "max":
+                Expect(1, 1);
+                _sql.Append(name).Append('(').Append(distinct);
+                if (args[0] is ColumnReferenceExpression { ColumnType: ColumnType.Wildcard }) _sql.Append('*');
+                else Expression(args[0]);
+                _sql.Append(')');
+                return;
+            case "getdate" or "current_timestamp" or "sysdatetime":
+                Expect(0, 0);
+                _sql.Append("tsql_getdate()");
+                return;
+            case "year" or "month" or "day":
+                Expect(1, 1);
+                _sql.Append("tsql_datepart('").Append(name).Append("', ");
+                Expression(args[0]);
+                _sql.Append(')');
+                return;
+            case "datepart" or "datename":
+                Expect(2, 2);
+                _sql.Append("tsql_datepart(").Append(Values.Quote(DatePartName(args[0]))).Append(", ");
+                Expression(args[1]);
+                _sql.Append(')');
+                return;
+            case "dateadd" or "datediff":
+                Expect(3, 3);
+                _sql.Append("tsql_").Append(name).Append('(').Append(Values.Quote(DatePartName(args[0]))).Append(", ");
+                Expression(args[1]);
+                _sql.Append(", ");
+                Expression(args[2]);
+                _sql.Append(')');
+                return;
+            case "scope_identity" or "ident_current":
+                _sql.Append("last_insert_rowid()");
+                return;
+            case "len":
+                Expect(1, 1);
+                Call("tsql_len", args);
+                return;
+            case "datalength":
+                Expect(1, 1);
+                Call("length", args);
+                return;
+            case "substring":
+                Expect(3, 3);
+                Call("substr", args);
+                return;
+            case "charindex":
+                Expect(2, 2);
+                Call("tsql_charindex", args);
+                return;
+            case "upper" or "lower" or "ltrim" or "rtrim" or "replace" or "abs" or "round" or "sign":
+                Expect(1, 3);
+                Call(name, name == "round" ? args.Take(2).ToList() : args);
+                return;
+            case "isnull":
+                Expect(2, 2);
+                Call("ifnull", args);
+                return;
+            case "floor" or "ceiling" or "sqrt":
+                Expect(1, 1);
+                Call("tsql_" + name, args);
+                return;
+            case "power":
+                Expect(2, 2);
+                Call("tsql_power", args);
+                return;
+            case "newid":
+                Expect(0, 0);
+                _sql.Append("tsql_newid()");
+                return;
+            case "rand":
+                _sql.Append("tsql_rand()");
+                return;
+            default:
+                throw SqlException.UnknownFunction(call.FunctionName.Value);
+        }
+    }
+
+    /// <summary>DATEADD(day, ...) 的第一个参数是关键字：ScriptDom 解析成 IdentifierLiteral（旧版本是列名）</summary>
+    private static string DatePartName(ScalarExpression expression) => expression switch
+    {
+        IdentifierLiteral i => i.Value,
+        ColumnReferenceExpression c => c.MultiPartIdentifier.Identifiers[^1].Value,
+        StringLiteral s => s.Value,
+        _ => throw SqlException.NotSupported("这种 datepart 写法"),
+    };
+
+    // ---------- 条件 ----------
+
+    private void Boolean(BooleanExpression expression)
+    {
+        switch (expression)
+        {
+            case BooleanComparisonExpression comparison:
+                _sql.Append('(');
+                Comparand(comparison.FirstExpression);
+                _sql.Append(comparison.ComparisonType switch
+                {
+                    BooleanComparisonType.Equals => " = ",
+                    BooleanComparisonType.GreaterThan => " > ",
+                    BooleanComparisonType.LessThan => " < ",
+                    BooleanComparisonType.GreaterThanOrEqualTo or BooleanComparisonType.NotLessThan => " >= ",
+                    BooleanComparisonType.LessThanOrEqualTo or BooleanComparisonType.NotGreaterThan => " <= ",
+                    BooleanComparisonType.NotEqualToBrackets or BooleanComparisonType.NotEqualToExclamation => " <> ",
+                    _ => throw SqlException.NotSupported(comparison.ComparisonType.ToString()),
+                });
+                Comparand(comparison.SecondExpression);
+                _sql.Append(')');
+                break;
+            case BooleanBinaryExpression binary:
+                _sql.Append('(');
+                Boolean(binary.FirstExpression);
+                _sql.Append(binary.BinaryExpressionType == BooleanBinaryExpressionType.And ? " AND " : " OR ");
+                Boolean(binary.SecondExpression);
+                _sql.Append(')');
+                break;
+            case BooleanNotExpression not:
+                _sql.Append("NOT (");
+                Boolean(not.Expression);
+                _sql.Append(')');
+                break;
+            case BooleanParenthesisExpression paren:
+                _sql.Append('(');
+                Boolean(paren.Expression);
+                _sql.Append(')');
+                break;
+            case BooleanIsNullExpression isNull:
+                _sql.Append('(');
+                Expression(isNull.Expression);
+                _sql.Append(isNull.IsNot ? " IS NOT NULL)" : " IS NULL)");
+                break;
+            case LikePredicate like:
+                _sql.Append('(');
+                Expression(like.FirstExpression);
+                _sql.Append(like.NotDefined ? " NOT LIKE " : " LIKE ");
+                Expression(like.SecondExpression);
+                if (like.EscapeExpression != null)
+                {
+                    _sql.Append(" ESCAPE ");
+                    Expression(like.EscapeExpression);
+                }
+                _sql.Append(')');
+                break;
+            case InPredicate inPredicate:
+                _sql.Append('(');
+                Comparand(inPredicate.Expression);
+                _sql.Append(inPredicate.NotDefined ? " NOT IN (" : " IN (");
+                if (inPredicate.Subquery != null)
+                {
+                    Query(inPredicate.Subquery.QueryExpression);
+                }
+                else
+                {
+                    for (var i = 0; i < inPredicate.Values.Count; i++)
+                    {
+                        if (i > 0) _sql.Append(", ");
+                        Comparand(inPredicate.Values[i]);
+                    }
+                }
+                _sql.Append("))");
+                break;
+            case BooleanTernaryExpression between:
+                _sql.Append('(');
+                Comparand(between.FirstExpression);
+                _sql.Append(between.TernaryExpressionType == BooleanTernaryExpressionType.NotBetween ? " NOT BETWEEN " : " BETWEEN ");
+                Comparand(between.SecondExpression);
+                _sql.Append(" AND ");
+                Comparand(between.ThirdExpression);
+                _sql.Append(')');
+                break;
+            case ExistsPredicate exists:
+                _sql.Append("EXISTS (");
+                Query(exists.Subquery.QueryExpression);
+                _sql.Append(')');
+                break;
+            default:
+                throw SqlException.NotSupported(expression.GetType().Name.Replace("Expression", "") + " 条件");
+        }
+    }
+
+    /// <summary>比较里的日期字符串转成标准格式，日期列按文本比较才是按时间先后（BETWEEN '2024/1/16 9:05:03' AND ...）</summary>
+    private void Comparand(ScalarExpression expression)
+    {
+        if (expression is StringLiteral s && Values.LooksLikeDate(s.Value))
+        {
+            _sql.Append(Values.Quote(Values.NormalizeDateLiteral(s.Value)));
+            return;
+        }
+        // 参数的值执行时才知道：是日期样子的字符串时同样转成标准格式（教材 BETWEEN @time_start AND @time_end 传的是字符串）
+        if (expression is VariableReference)
+        {
+            _sql.Append("tsql_cmp(");
+            Expression(expression);
+            _sql.Append(')');
+            return;
+        }
+        Expression(expression);
+    }
+}

runtime/Sim.Data/Engine/Values.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Data.SqlClient;
+using System.Globalization;
+using System.Text.RegularExpressions;
+
+namespace Sim.Data.Engine;
+
+/// <summary>值在 .NET、SQLite、T-SQL 之间的转换。日期一律以 "yyyy-MM-dd HH:mm:ss" 文本保存，按文本比较即按时间先后。</summary>
+internal static class Values
+{
+    private static readonly string[] DateFormats =
+    {
+        "yyyy-M-d", "yyyy-M-d H:m", "yyyy-M-d H:m:s", "yyyy-M-d H:m:s.FFFFFFF", "yyyy-M-dTH:m:s", "yyyy-M-dTH:m:s.FFFFFFF",
+        "yyyy/M/d", "yyyy/M/d H:m", "yyyy/M/d H:m:s", "yyyy/M/d H:m:s.FFFFFFF",
+        "yyyyMMdd", "yyyyMMdd H:m:s",
+        "yyyy.M.d", "yyyy.M.d H:m:s",
+    };
+
+    /// <summary>形如日期的字符串字面量（比较时转成标准格式，例如 BETWEEN '2024/1/16 9:05:03' AND ...）</summary>
+    private static readonly Regex DateLike = new(@"^\d{4}[-/.]\d{1,2}[-/.]\d{1,2}((\s+|T)\d{1,2}:\d{1,2}(:\d{1,2}(\.\d+)?)?)?$");
+
+    /// <summary>日期和时间之间多余的空格（教材拼出的 "2024/1/23  23:59:59"）</summary>
+    private static readonly Regex Spaces = new(@"\s+");
+
+    public static bool LooksLikeDate(string text) => DateLike.IsMatch(text.Trim());
+
+    /// <summary>按 SQL Server 接受的写法解析日期（包括中文 Windows 上 DateTime.ToString() 的 2024/1/16 9:05:03）</summary>
+    public static bool TryParseDateTime(string text, out DateTime value) =>
+        DateTime.TryParseExact(Spaces.Replace(text.Trim(), " "), DateFormats, CultureInfo.InvariantCulture, DateTimeStyles.AllowWhiteSpaces, out value);
+
+    public static string FormatDateTime(DateTime value) =>
+        value.Millisecond == 0 && value.Ticks % TimeSpan.TicksPerMillisecond == 0
+            ? value.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture)
+            : value.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.InvariantCulture);
+
+    public static string FormatDate(DateTime value) => value.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
+
+    /// <summary>字符串里的日期改成标准格式；只有日期没有时间的保持只有日期（与 datetime 比较时相当于当天 0 点）</summary>
+    public static string NormalizeDateLiteral(string text)
+    {
+        if (!TryParseDateTime(text, out var value)) return text;
+        return text.Contains(':') ? FormatDateTime(value) : FormatDate(value);
+    }
+
+    /// <summary>C# 传进来的参数值 → SQLite 能保存的值</summary>
+    public static object? ToStorage(object? value) => value switch
+    {
+        null or DBNull => null,
+        DateTime d => FormatDateTime(d),
+        DateTimeOffset d => FormatDateTime(d.LocalDateTime),
+        TimeSpan t => t.ToString(@"hh\:mm\:ss", CultureInfo.InvariantCulture),
+        bool b => b ? 1L : 0L,
+        Guid g => g.ToString().ToUpperInvariant(),
+        decimal m => (double)m,
+        Enum e => Convert.ToInt64(e, CultureInfo.InvariantCulture),
+        _ => value,
+    };
+
+    /// <summary>SQLite 读出的值 → SQL Server 对这个类型返回的 .NET 值</summary>
+    public static object FromStorage(object value, TSqlType? type)
+    {
+        if (value is DBNull) return value;
+        if (type == null || type.ClrType == typeof(object)) return FromExpression(value);
+        try
+        {
+            return type.ClrType switch
+            {
+                var t when t == typeof(int) => Convert.ToInt32(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(long) => Convert.ToInt64(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(short) => Convert.ToInt16(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(byte) => Convert.ToByte(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(bool) => Convert.ToInt64(value, CultureInfo.InvariantCulture) != 0,
+                var t when t == typeof(double) => Convert.ToDouble(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(float) => Convert.ToSingle(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(decimal) => Convert.ToDecimal(value, CultureInfo.InvariantCulture),
+                var t when t == typeof(DateTime) => value is string s && TryParseDateTime(s, out var d) ? d : value,
+                var t when t == typeof(TimeSpan) => value is string s && TimeSpan.TryParse(s, CultureInfo.InvariantCulture, out var ts) ? ts : value,
+                var t when t == typeof(Guid) => value is string s && Guid.TryParse(s, out var g) ? g : value,
+                var t when t == typeof(string) => Convert.ToString(value, CultureInfo.InvariantCulture)!,
+                _ => value,
+            };
+        }
+        catch (Exception ex) when (ex is FormatException or OverflowException or InvalidCastException)
+        {
+            return value;
+        }
+    }
+
+    /// <summary>表达式列（如 count(*)、getdate()）没有声明类型：整数按 int 返回，日期样子的文本按 DateTime 返回</summary>
+    public static object FromExpression(object value) => value switch
+    {
+        long l when l is >= int.MinValue and <= int.MaxValue => (int)l,
+        string s when DateLike.IsMatch(s) && s.Contains(':') && TryParseDateTime(s, out var d) => d,
+        _ => value,
+    };
+
+    /// <summary>T-SQL 字符串字面量</summary>
+    public static string Quote(string text) => "'" + text.Replace("'", "''") + "'";
+
+    /// <summary>SQLite 标识符</summary>
+    public static string QuoteName(string name) => "\"" + name.Replace("\"", "\"\"") + "\"";
+
+    public static SqlException ConvertError(object? value, string type) =>
+        SqlException.ConvertFailed(Convert.ToString(value, CultureInfo.InvariantCulture) ?? "", type);
+}

runtime/Sim.Data/Sim.Data.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- 仿真的 System.Data.SqlClient：教材用 SQL Server，平台底层用 SQLite（每个学生一套数据库文件），
+       T-SQL 语句用 ScriptDom 解析后转写成 SQLite 语句。学生代码编译时引用本程序集。 -->
+  <PropertyGroup>
+    <AssemblyName>Sim.Data</AssemblyName>
+    <RootNamespace>System.Data.SqlClient</RootNamespace>
+    <NoWarn>$(NoWarn);CS1591;CS8618</NoWarn>
+  </PropertyGroup>
+  <ItemGroup>
+    <!-- 运行器的 SQL 服务（数据库页面、准备实验数据）直接使用执行层 -->
+    <InternalsVisibleTo Include="Sim.Runner" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Data.Sqlite" Version="10.0.13" />
+    <PackageReference Include="Microsoft.SqlServer.TransactSql.ScriptDom" Version="180.140.0" />
+  </ItemGroup>
+</Project>

runtime/Sim.Data/SqlClient/SqlCommand.cs

@@ -0,0 +1,302 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Linq;
+using Sim.Data.Engine;
+
+namespace System.Data.SqlClient;
+
+/// <summary>执行 T-SQL 语句。一条命令里可以有多条语句（用分号或换行分开）</summary>
+public sealed class SqlCommand : DbCommand, ICloneable
+{
+    private SqlConnection? _connection;
+    private string _commandText = "";
+    private CommandType _commandType = CommandType.Text;
+
+    public SqlCommand() { }
+
+    public SqlCommand(string cmdText) => CommandText = cmdText;
+
+    public SqlCommand(string cmdText, SqlConnection connection) : this(cmdText) => Connection = connection;
+
+    public SqlCommand(string cmdText, SqlConnection connection, SqlTransaction transaction) : this(cmdText, connection) => Transaction = transaction;
+
+    [Diagnostics.CodeAnalysis.AllowNull]
+    public override string CommandText
+    {
+        get => _commandText;
+        set => _commandText = value ?? "";
+    }
+
+    public override int CommandTimeout { get; set; } = 30;
+
+    public override CommandType CommandType
+    {
+        get => _commandType;
+        set => _commandType = value;
+    }
+
+    public new SqlConnection? Connection
+    {
+        get => _connection;
+        set => _connection = value;
+    }
+
+    protected override DbConnection? DbConnection
+    {
+        get => _connection;
+        set => _connection = (SqlConnection?)value;
+    }
+
+    public new SqlParameterCollection Parameters { get; } = new();
+    protected override DbParameterCollection DbParameterCollection => Parameters;
+
+    public new SqlTransaction? Transaction { get; set; }
+
+    protected override DbTransaction? DbTransaction
+    {
+        get => Transaction;
+        set => Transaction = (SqlTransaction?)value;
+    }
+
+    public override bool DesignTimeVisible { get; set; } = true;
+    public override UpdateRowSource UpdatedRowSource { get; set; } = UpdateRowSource.Both;
+
+    public override int ExecuteNonQuery() => Run(nameof(ExecuteNonQuery)).RecordsAffected;
+
+    public override object? ExecuteScalar()
+    {
+        var result = Run(nameof(ExecuteScalar));
+        return result.Results.Count > 0 && result.Results[0].Rows.Count > 0 ? result.Results[0].Rows[0][0] : null;
+    }
+
+    public new SqlDataReader ExecuteReader() => ExecuteReader(CommandBehavior.Default);
+
+    public new SqlDataReader ExecuteReader(CommandBehavior behavior) =>
+        new(Run(nameof(ExecuteReader)), behavior.HasFlag(CommandBehavior.CloseConnection) ? _connection : null);
+
+    protected override DbDataReader ExecuteDbDataReader(CommandBehavior behavior) => ExecuteReader(behavior);
+
+    public override void Cancel() { }
+    public override void Prepare() { }
+
+    public new SqlParameter CreateParameter() => new();
+    protected override DbParameter CreateDbParameter() => CreateParameter();
+
+    public SqlCommand Clone()
+    {
+        var clone = new SqlCommand(_commandText, _connection!) { CommandType = _commandType, CommandTimeout = CommandTimeout, Transaction = Transaction };
+        foreach (SqlParameter parameter in Parameters) clone.Parameters.Add(parameter.Clone());
+        return clone;
+    }
+
+    object ICloneable.Clone() => Clone();
+
+    private BatchResult Run(string operation)
+    {
+        if (_connection == null) throw new InvalidOperationException($"{operation}: Connection 属性尚未初始化。");
+        var session = _connection.Session(operation);
+        if (string.IsNullOrWhiteSpace(_commandText)) throw new InvalidOperationException($"{operation}: CommandText 属性尚未初始化");
+        if (_commandType == CommandType.StoredProcedure) throw SqlException.NotSupported("存储过程");
+        try
+        {
+            return session.Execute(_commandText, name =>
+            {
+                var parameter = Parameters.Find(name);
+                return parameter == null ? (false, null) : (true, parameter.Value);
+            });
+        }
+        catch (SqlException ex)
+        {
+            throw ex.Rethrow();
+        }
+    }
+}
+
+public sealed class SqlParameter : DbParameter, ICloneable
+{
+    private SqlDbType _sqlDbType = SqlDbType.NVarChar;
+    private bool _typeSet;
+    private string _parameterName = "";
+    private string _sourceColumn = "";
+
+    public SqlParameter() { }
+
+    public SqlParameter(string parameterName, object? value)
+    {
+        ParameterName = parameterName;
+        Value = value;
+    }
+
+    public SqlParameter(string parameterName, SqlDbType dbType)
+    {
+        ParameterName = parameterName;
+        SqlDbType = dbType;
+    }
+
+    public SqlParameter(string parameterName, SqlDbType dbType, int size) : this(parameterName, dbType) => Size = size;
+
+    public SqlParameter(string parameterName, SqlDbType dbType, int size, string sourceColumn) : this(parameterName, dbType, size) => SourceColumn = sourceColumn;
+
+    [Diagnostics.CodeAnalysis.AllowNull]
+    public override string ParameterName
+    {
+        get => _parameterName;
+        set => _parameterName = value ?? "";
+    }
+
+    public override object? Value { get; set; }
+
+    public SqlDbType SqlDbType
+    {
+        get => _sqlDbType;
+        set
+        {
+            _sqlDbType = value;
+            _typeSet = true;
+        }
+    }
+
+    public override DbType DbType
+    {
+        get => _sqlDbType switch
+        {
+            SqlDbType.Int => DbType.Int32,
+            SqlDbType.BigInt => DbType.Int64,
+            SqlDbType.SmallInt => DbType.Int16,
+            SqlDbType.TinyInt => DbType.Byte,
+            SqlDbType.Bit => DbType.Boolean,
+            SqlDbType.Float => DbType.Double,
+            SqlDbType.Real => DbType.Single,
+            SqlDbType.Decimal or SqlDbType.Money => DbType.Decimal,
+            SqlDbType.DateTime or SqlDbType.SmallDateTime or SqlDbType.Date => DbType.DateTime,
+            SqlDbType.VarBinary or SqlDbType.Image or SqlDbType.Binary => DbType.Binary,
+            SqlDbType.UniqueIdentifier => DbType.Guid,
+            SqlDbType.VarChar or SqlDbType.Char or SqlDbType.Text => DbType.AnsiString,
+            _ => DbType.String,
+        };
+        set => SqlDbType = value switch
+        {
+            DbType.Int32 => SqlDbType.Int,
+            DbType.Int64 => SqlDbType.BigInt,
+            DbType.Int16 => SqlDbType.SmallInt,
+            DbType.Byte => SqlDbType.TinyInt,
+            DbType.Boolean => SqlDbType.Bit,
+            DbType.Double => SqlDbType.Float,
+            DbType.Single => SqlDbType.Real,
+            DbType.Decimal or DbType.Currency => SqlDbType.Decimal,
+            DbType.DateTime or DbType.Date => SqlDbType.DateTime,
+            DbType.Binary => SqlDbType.VarBinary,
+            DbType.Guid => SqlDbType.UniqueIdentifier,
+            DbType.AnsiString => SqlDbType.VarChar,
+            _ => SqlDbType.NVarChar,
+        };
+    }
+
+    public override ParameterDirection Direction { get; set; } = ParameterDirection.Input;
+    public override bool IsNullable { get; set; }
+    public override int Size { get; set; }
+    public new byte Precision { get; set; }
+    public new byte Scale { get; set; }
+
+    [Diagnostics.CodeAnalysis.AllowNull]
+    public override string SourceColumn
+    {
+        get => _sourceColumn;
+        set => _sourceColumn = value ?? "";
+    }
+
+    public override bool SourceColumnNullMapping { get; set; }
+    public override DataRowVersion SourceVersion { get; set; } = DataRowVersion.Current;
+
+    public override void ResetDbType()
+    {
+        _sqlDbType = SqlDbType.NVarChar;
+        _typeSet = false;
+    }
+
+    internal bool TypeSet => _typeSet;
+
+    public SqlParameter Clone() => new(_parameterName, Value)
+    {
+        _sqlDbType = _sqlDbType,
+        _typeSet = _typeSet,
+        Direction = Direction,
+        Size = Size,
+        SourceColumn = SourceColumn,
+        SourceVersion = SourceVersion,
+        SourceColumnNullMapping = SourceColumnNullMapping,
+        IsNullable = IsNullable,
+    };
+
+    object ICloneable.Clone() => Clone();
+
+    public override string ToString() => _parameterName;
+}
+
+public sealed class SqlParameterCollection : DbParameterCollection
+{
+    private readonly List<SqlParameter> _items = new();
+
+    public override int Count => _items.Count;
+    public override object SyncRoot => this;
+
+    public new SqlParameter this[int index]
+    {
+        get => _items[index];
+        set => _items[index] = value;
+    }
+
+    public new SqlParameter this[string parameterName]
+    {
+        get => Find(parameterName) ?? throw new IndexOutOfRangeException($"此 SqlParameterCollection 中未包含带有 ParameterName“{parameterName}”的 SqlParameter。");
+        set => _items[IndexOf(parameterName)] = value;
+    }
+
+    /// <summary>按名字找参数，"@id" 和 "id" 视为同一个（和 SqlClient 一样不区分大小写）</summary>
+    internal SqlParameter? Find(string name)
+    {
+        var bare = name.TrimStart('@');
+        return _items.FirstOrDefault(p => string.Equals(p.ParameterName.TrimStart('@'), bare, StringComparison.OrdinalIgnoreCase));
+    }
+
+    public SqlParameter Add(SqlParameter value)
+    {
+        _items.Add(value ?? throw new ArgumentNullException(nameof(value)));
+        return value;
+    }
+
+    public override int Add(object value)
+    {
+        Add(value as SqlParameter ?? throw new InvalidCastException("SqlParameterCollection 只接受非空的 SqlParameter 类型对象。"));
+        return _items.Count - 1;
+    }
+
+    public SqlParameter Add(string parameterName, SqlDbType sqlDbType) => Add(new SqlParameter(parameterName, sqlDbType));
+    public SqlParameter Add(string parameterName, SqlDbType sqlDbType, int size) => Add(new SqlParameter(parameterName, sqlDbType, size));
+    public SqlParameter Add(string parameterName, SqlDbType sqlDbType, int size, string sourceColumn) => Add(new SqlParameter(parameterName, sqlDbType, size, sourceColumn));
+    public SqlParameter AddWithValue(string parameterName, object? value) => Add(new SqlParameter(parameterName, value));
+
+    public override void AddRange(Array values)
+    {
+        foreach (var value in values) Add(value);
+    }
+
+    public void AddRange(SqlParameter[] values) => AddRange((Array)values);
+
+    public override void Clear() => _items.Clear();
+    public override bool Contains(object value) => value is SqlParameter p && _items.Contains(p);
+    public override bool Contains(string value) => Find(value) != null;
+    public override void CopyTo(Array array, int index) => ((ICollection)_items).CopyTo(array, index);
+    public override IEnumerator GetEnumerator() => _items.GetEnumerator();
+    public override int IndexOf(object value) => value is SqlParameter p ? _items.IndexOf(p) : -1;
+    public override int IndexOf(string parameterName) => Find(parameterName) is { } p ? _items.IndexOf(p) : -1;
+    public override void Insert(int index, object value) => _items.Insert(index, (SqlParameter)value);
+    public override void Remove(object value) => _items.Remove((SqlParameter)value);
+    public override void RemoveAt(int index) => _items.RemoveAt(index);
+    public override void RemoveAt(string parameterName) => _items.RemoveAt(IndexOf(parameterName));
+    protected override DbParameter GetParameter(int index) => _items[index];
+    protected override DbParameter GetParameter(string parameterName) => this[parameterName];
+    protected override void SetParameter(int index, DbParameter value) => _items[index] = (SqlParameter)value;
+    protected override void SetParameter(string parameterName, DbParameter value) => this[parameterName] = (SqlParameter)value;
+}

runtime/Sim.Data/SqlClient/SqlConnection.cs

@@ -0,0 +1,169 @@
+using System.Collections.Generic;
+using System.Data.Common;
+using Sim.Data.Engine;
+
+namespace System.Data.SqlClient;
+
+/// <summary>
+/// 数据库连接。连接字符串里的服务器名、账号、密码都不检查（书上的长服务器名、"." 都能连上），
+/// 只按 Initial Catalog（或 Database）打开这个学生自己的同名数据库；不写时连到 master。
+/// </summary>
+public sealed class SqlConnection : DbConnection, ICloneable
+{
+    private static readonly HashSet<string> KnownKeywords = new(StringComparer.OrdinalIgnoreCase)
+    {
+        "data source", "server", "address", "addr", "network address", "initial catalog", "database", "user id", "uid", "user",
+        "password", "pwd", "integrated security", "trusted_connection", "persist security info", "persistsecurityinfo",
+        "connect timeout", "connection timeout", "timeout", "pooling", "max pool size", "min pool size", "multipleactiveresultsets",
+        "encrypt", "trustservercertificate", "application name", "app", "workstation id", "wsid", "packet size",
+        "asynchronous processing", "async", "user instance", "attachdbfilename", "connection lifetime", "load balance timeout", "current language", "language",
+    };
+
+    private string _connectionString = "";
+    private ConnectionState _state = ConnectionState.Closed;
+    private Session? _session;
+
+    public SqlConnection() { }
+
+    public SqlConnection(string connectionString) => ConnectionString = connectionString;
+
+    [Diagnostics.CodeAnalysis.AllowNull]
+    public override string ConnectionString
+    {
+        get => _connectionString;
+        set
+        {
+            if (_state != ConnectionState.Closed) throw new InvalidOperationException("不允许更改“ConnectionString”属性。连接的当前状态为打开。");
+            _connectionString = value ?? "";
+        }
+    }
+
+    public override string Database => _session?.Database ?? Setting("initial catalog", "database") ?? DatabaseStore.Master;
+    public override string DataSource => Setting("data source", "server", "address", "addr", "network address") ?? "";
+    public override string ServerVersion => "10.50.1600";
+    public override ConnectionState State => _state;
+    public override int ConnectionTimeout => 15;
+    public string WorkstationId => Environment.MachineName;
+
+    /// <summary>连接打开时的数据库会话（平台内部使用）</summary>
+    internal Session Session(string operation) =>
+        _state == ConnectionState.Open && _session != null
+            ? _session
+            : throw new InvalidOperationException($"{operation} 要求已打开且可用的连接。连接的当前状态为已关闭。");
+
+    public override void Open()
+    {
+        if (_state == ConnectionState.Open) throw new InvalidOperationException("连接未关闭。连接的当前状态为打开。");
+        CheckKeywords();
+        var store = DatabaseStore.FromEnvironment()
+            ?? throw new SqlException(-1, "在与 SQL Server 建立连接时出现与网络相关的或特定于实例的错误：这次运行没有准备数据库。");
+        try
+        {
+            _session = new Session(store, Database);
+        }
+        catch (SqlException ex)
+        {
+            throw ex.Rethrow();
+        }
+        SetState(ConnectionState.Open);
+    }
+
+    public override void Close()
+    {
+        if (_session == null) return;
+        _session.Dispose();
+        _session = null;
+        SetState(ConnectionState.Closed);
+    }
+
+    public override void ChangeDatabase(string databaseName) => Session("ChangeDatabase").ChangeDatabase(databaseName);
+
+    public new SqlCommand CreateCommand() => new() { Connection = this };
+
+    protected override DbCommand CreateDbCommand() => CreateCommand();
+
+    public new SqlTransaction BeginTransaction() => BeginTransaction(IsolationLevel.ReadCommitted);
+
+    public new SqlTransaction BeginTransaction(IsolationLevel iso)
+    {
+        Session("BeginTransaction").BeginTransaction();
+        return new SqlTransaction(this, iso);
+    }
+
+    protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel) => BeginTransaction(isolationLevel);
+
+    public object Clone() => new SqlConnection(_connectionString);
+
+    public static void ClearAllPools() { }
+    public static void ClearPool(SqlConnection connection) { }
+
+    protected override void Dispose(bool disposing)
+    {
+        if (disposing) Close();
+        base.Dispose(disposing);
+    }
+
+    private void SetState(ConnectionState state)
+    {
+        var original = _state;
+        _state = state;
+        OnStateChange(new StateChangeEventArgs(original, state));
+    }
+
+    private string? Setting(params string[] keys)
+    {
+        var builder = Parse();
+        foreach (var key in keys)
+            if (builder.TryGetValue(key, out var value) && value?.ToString() is { Length: > 0 } text) return text.Trim();
+        return null;
+    }
+
+    private DbConnectionStringBuilder Parse()
+    {
+        try
+        {
+            return new DbConnectionStringBuilder { ConnectionString = _connectionString };
+        }
+        catch (ArgumentException)
+        {
+            throw new ArgumentException("初始化字符串的格式不符合从索引 0 处开始的规范。");
+        }
+    }
+
+    private void CheckKeywords()
+    {
+        foreach (string key in Parse().Keys)
+            if (!KnownKeywords.Contains(key)) throw new ArgumentException($"不支持关键字:“{key}”。");
+        if (Setting("attachdbfilename") != null) throw new SqlException(-1, "平台不支持 AttachDbFilename：请用 Initial Catalog 指定数据库名。");
+    }
+}
+
+public sealed class SqlTransaction : DbTransaction
+{
+    private readonly SqlConnection _connection;
+    private bool _done;
+
+    internal SqlTransaction(SqlConnection connection, IsolationLevel isolationLevel)
+    {
+        _connection = connection;
+        IsolationLevel = isolationLevel;
+    }
+
+    public new SqlConnection Connection => _connection;
+    protected override DbConnection DbConnection => _connection;
+    public override IsolationLevel IsolationLevel { get; }
+
+    public override void Commit()
+    {
+        if (_done) throw new InvalidOperationException("此 SqlTransaction 已完成；它再也无法使用。");
+        _done = true;
+        _connection.Session("Commit").Commit();
+    }
+
+    public override void Rollback()
+    {
+        if (_done) throw new InvalidOperationException("此 SqlTransaction 已完成；它再也无法使用。");
+        _done = true;
+        _connection.Session("Rollback").Rollback();
+    }
+}

runtime/Sim.Data/SqlClient/SqlDataAdapter.cs

@@ -0,0 +1,120 @@
+using System.Data.Common;
+
+namespace System.Data.SqlClient;
+
+public delegate void SqlRowUpdatingEventHandler(object sender, SqlRowUpdatingEventArgs e);
+public delegate void SqlRowUpdatedEventHandler(object sender, SqlRowUpdatedEventArgs e);
+
+public sealed class SqlRowUpdatingEventArgs : RowUpdatingEventArgs
+{
+    public SqlRowUpdatingEventArgs(DataRow row, IDbCommand? command, StatementType statementType, DataTableMapping tableMapping)
+        : base(row, command, statementType, tableMapping) { }
+
+    public new SqlCommand? Command
+    {
+        get => (SqlCommand?)base.Command;
+        set => base.Command = value;
+    }
+}
+
+public sealed class SqlRowUpdatedEventArgs : RowUpdatedEventArgs
+{
+    public SqlRowUpdatedEventArgs(DataRow row, IDbCommand? command, StatementType statementType, DataTableMapping tableMapping)
+        : base(row, command, statementType, tableMapping) { }
+
+    public new SqlCommand? Command => (SqlCommand?)base.Command;
+}
+
+/// <summary>在数据库和 DataSet 之间搬运数据：Fill 读出来，Update 把 DataTable 里改过的行写回去</summary>
+public sealed class SqlDataAdapter : DbDataAdapter, ICloneable
+{
+    public SqlDataAdapter() { }
+
+    public SqlDataAdapter(SqlCommand selectCommand) => SelectCommand = selectCommand;
+
+    public SqlDataAdapter(string selectCommandText, SqlConnection selectConnection) => SelectCommand = new SqlCommand(selectCommandText, selectConnection);
+
+    public SqlDataAdapter(string selectCommandText, string selectConnectionString) =>
+        SelectCommand = new SqlCommand(selectCommandText, new SqlConnection(selectConnectionString));
+
+    public new SqlCommand? SelectCommand
+    {
+        get => (SqlCommand?)base.SelectCommand;
+        set => base.SelectCommand = value;
+    }
+
+    public new SqlCommand? InsertCommand
+    {
+        get => (SqlCommand?)base.InsertCommand;
+        set => base.InsertCommand = value;
+    }
+
+    public new SqlCommand? UpdateCommand
+    {
+        get => (SqlCommand?)base.UpdateCommand;
+        set => base.UpdateCommand = value;
+    }
+
+    public new SqlCommand? DeleteCommand
+    {
+        get => (SqlCommand?)base.DeleteCommand;
+        set => base.DeleteCommand = value;
+    }
+
+    public event SqlRowUpdatingEventHandler? RowUpdating;
+    public event SqlRowUpdatedEventHandler? RowUpdated;
+
+    protected override RowUpdatingEventArgs CreateRowUpdatingEvent(DataRow dataRow, IDbCommand? command, StatementType statementType, DataTableMapping tableMapping) =>
+        new SqlRowUpdatingEventArgs(dataRow, command, statementType, tableMapping);
+
+    protected override RowUpdatedEventArgs CreateRowUpdatedEvent(DataRow dataRow, IDbCommand? command, StatementType statementType, DataTableMapping tableMapping) =>
+        new SqlRowUpdatedEventArgs(dataRow, command, statementType, tableMapping);
+
+    protected override void OnRowUpdating(RowUpdatingEventArgs value) => RowUpdating?.Invoke(this, (SqlRowUpdatingEventArgs)value);
+
+    protected override void OnRowUpdated(RowUpdatedEventArgs value) => RowUpdated?.Invoke(this, (SqlRowUpdatedEventArgs)value);
+
+    object ICloneable.Clone() => new SqlDataAdapter { SelectCommand = SelectCommand, InsertCommand = InsertCommand, UpdateCommand = UpdateCommand, DeleteCommand = DeleteCommand };
+}
+
+/// <summary>按 SqlDataAdapter 的查询语句自动生成 INSERT / UPDATE / DELETE（要求查询包含主键列）</summary>
+public sealed class SqlCommandBuilder : DbCommandBuilder
+{
+    public SqlCommandBuilder()
+    {
+        QuotePrefix = "[";
+        QuoteSuffix = "]";
+    }
+
+    public SqlCommandBuilder(SqlDataAdapter adapter) : this() => DataAdapter = adapter;
+
+    public new SqlDataAdapter? DataAdapter
+    {
+        get => (SqlDataAdapter?)base.DataAdapter;
+        set => base.DataAdapter = value;
+    }
+
+    public new SqlCommand GetInsertCommand() => (SqlCommand)base.GetInsertCommand();
+    public new SqlCommand GetInsertCommand(bool useColumnsForParameterNames) => (SqlCommand)base.GetInsertCommand(useColumnsForParameterNames);
+    public new SqlCommand GetUpdateCommand() => (SqlCommand)base.GetUpdateCommand();
+    public new SqlCommand GetUpdateCommand(bool useColumnsForParameterNames) => (SqlCommand)base.GetUpdateCommand(useColumnsForParameterNames);
+    public new SqlCommand GetDeleteCommand() => (SqlCommand)base.GetDeleteCommand();
+    public new SqlCommand GetDeleteCommand(bool useColumnsForParameterNames) => (SqlCommand)base.GetDeleteCommand(useColumnsForParameterNames);
+
+    protected override void ApplyParameterInfo(DbParameter parameter, DataRow row, StatementType statementType, bool whereClause) { }
+
+    protected override string GetParameterName(int parameterOrdinal) => "@p" + parameterOrdinal.ToString(Globalization.CultureInfo.InvariantCulture);
+    protected override string GetParameterName(string parameterName) => "@" + parameterName;
+    protected override string GetParameterPlaceholder(int parameterOrdinal) => GetParameterName(parameterOrdinal);
+
+    public override string QuoteIdentifier(string unquotedIdentifier) => "[" + unquotedIdentifier.Replace("]", "]]") + "]";
+
+    protected override void SetRowUpdatingHandler(DbDataAdapter adapter)
+    {
+        if (adapter is not SqlDataAdapter sql) throw new InvalidOperationException("SqlCommandBuilder 只能用于 SqlDataAdapter。");
+        if (adapter == base.DataAdapter) sql.RowUpdating += Handler;
+        else sql.RowUpdating -= Handler;
+    }
+
+    private void Handler(object sender, SqlRowUpdatingEventArgs e) => RowUpdatingHandler(e);
+}

runtime/Sim.Data/SqlClient/SqlDataReader.cs

@@ -0,0 +1,211 @@
+using System.Collections;
+using System.Data.Common;
+using System.Globalization;
+using Sim.Data.Engine;
+
+namespace System.Data.SqlClient;
+
+/// <summary>按行读取查询结果（结果已在内存里，读的时候不再访问数据库）</summary>
+public sealed class SqlDataReader : DbDataReader
+{
+    private readonly BatchResult _batch;
+    private readonly SqlConnection? _closeConnection;
+    private int _resultIndex;
+    private int _row = -1;
+    private bool _closed;
+
+    internal SqlDataReader(BatchResult batch, SqlConnection? closeConnection)
+    {
+        _batch = batch;
+        _closeConnection = closeConnection;
+    }
+
+    private QueryResult? Current => _resultIndex < _batch.Results.Count ? _batch.Results[_resultIndex] : null;
+
+    private object[] Row
+    {
+        get
+        {
+            if (_closed) throw new InvalidOperationException("阅读器关闭时尝试调用 Read 无效。");
+            var current = Current;
+            if (current == null || _row < 0 || _row >= current.Rows.Count) throw new InvalidOperationException("不存在数据时进行无效的读取尝试。");
+            return current.Rows[_row];
+        }
+    }
+
+    public override int FieldCount => Current?.Columns.Count ?? 0;
+    public override bool HasRows => Current?.Rows.Count > 0;
+    public override bool IsClosed => _closed;
+    public override int RecordsAffected => _batch.RecordsAffected;
+    public override int Depth => 0;
+
+    public override object this[int ordinal] => GetValue(ordinal);
+    public override object this[string name] => GetValue(GetOrdinal(name));
+
+    public override bool Read()
+    {
+        if (_closed) throw new InvalidOperationException("阅读器关闭时尝试调用 Read 无效。");
+        var current = Current;
+        if (current == null) return false;
+        _row++;
+        return _row < current.Rows.Count;
+    }
+
+    public override bool NextResult()
+    {
+        _resultIndex++;
+        _row = -1;
+        return Current != null;
+    }
+
+    public override void Close()
+    {
+        if (_closed) return;
+        _closed = true;
+        _closeConnection?.Close();
+    }
+
+    public override string GetName(int ordinal) => Column(ordinal).Name;
+
+    public override int GetOrdinal(string name)
+    {
+        var columns = Current?.Columns ?? throw new IndexOutOfRangeException(name);
+        for (var i = 0; i < columns.Count; i++)
+            if (string.Equals(columns[i].Name, name, StringComparison.OrdinalIgnoreCase)) return i;
+        throw new IndexOutOfRangeException(name);
+    }
+
+    public override Type GetFieldType(int ordinal) => Column(ordinal).ClrType;
+    public override string GetDataTypeName(int ordinal) => Column(ordinal).Type?.Name ?? "sql_variant";
+
+    public override object GetValue(int ordinal)
+    {
+        Column(ordinal);
+        return Row[ordinal];
+    }
+
+    public override int GetValues(object[] values)
+    {
+        var row = Row;
+        var count = Math.Min(values.Length, row.Length);
+        Array.Copy(row, values, count);
+        return count;
+    }
+
+    public override bool IsDBNull(int ordinal) => GetValue(ordinal) is DBNull;
+
+    public override bool GetBoolean(int ordinal) => Cast<bool>(ordinal);
+    public override byte GetByte(int ordinal) => Cast<byte>(ordinal);
+    public override char GetChar(int ordinal) => throw new NotSupportedException("SqlDataReader 不支持 GetChar。");
+    public override DateTime GetDateTime(int ordinal) => Cast<DateTime>(ordinal);
+    public override decimal GetDecimal(int ordinal) => Cast<decimal>(ordinal);
+    public override double GetDouble(int ordinal) => Cast<double>(ordinal);
+    public override float GetFloat(int ordinal) => Cast<float>(ordinal);
+    public override Guid GetGuid(int ordinal) => Cast<Guid>(ordinal);
+    public override short GetInt16(int ordinal) => Cast<short>(ordinal);
+    public override int GetInt32(int ordinal) => Cast<int>(ordinal);
+    public override long GetInt64(int ordinal) => Cast<long>(ordinal);
+    public override string GetString(int ordinal) => Cast<string>(ordinal);
+
+    /// <summary>和 SqlClient 一样严格：列是 varchar 时 GetInt32 报"指定的转换无效"，是 NULL 时报"数据为空"</summary>
+    private T Cast<T>(int ordinal)
+    {
+        var value = GetValue(ordinal);
+        if (value is DBNull) throw new InvalidCastException("数据为空。不能对空值调用此方法或属性。");
+        if (value is T typed) return typed;
+        // 表达式列（如 count(*)）没有声明类型，数字之间可以互相转换
+        if (Column(ordinal).Type == null && value is IConvertible && typeof(T) != typeof(string))
+            return (T)Convert.ChangeType(value, typeof(T), CultureInfo.InvariantCulture);
+        throw new InvalidCastException("指定的转换无效。");
+    }
+
+    public override long GetBytes(int ordinal, long dataOffset, byte[]? buffer, int bufferOffset, int length)
+    {
+        var bytes = Cast<byte[]>(ordinal);
+        if (buffer == null) return bytes.Length;
+        var count = (int)Math.Min(length, bytes.Length - dataOffset);
+        if (count <= 0) return 0;
+        Array.Copy(bytes, dataOffset, buffer, bufferOffset, count);
+        return count;
+    }
+
+    public override long GetChars(int ordinal, long dataOffset, char[]? buffer, int bufferOffset, int length)
+    {
+        var text = Cast<string>(ordinal);
+        if (buffer == null) return text.Length;
+        var count = (int)Math.Min(length, text.Length - dataOffset);
+        if (count <= 0) return 0;
+        text.CopyTo((int)dataOffset, buffer, bufferOffset, count);
+        return count;
+    }
+
+    public override IEnumerator GetEnumerator() => new DbEnumerator(this, closeReader: false);
+
+    /// <summary>列的结构信息：DbDataAdapter 填充、SqlCommandBuilder 生成增删改语句时要用（主键、自增、来自哪张表的哪一列）</summary>
+    public override DataTable GetSchemaTable()
+    {
+        var table = new DataTable("SchemaTable");
+        table.Columns.Add(SchemaTableColumn.ColumnName, typeof(string));
+        table.Columns.Add(SchemaTableColumn.ColumnOrdinal, typeof(int));
+        table.Columns.Add(SchemaTableColumn.ColumnSize, typeof(int));
+        table.Columns.Add(SchemaTableColumn.NumericPrecision, typeof(short));
+        table.Columns.Add(SchemaTableColumn.NumericScale, typeof(short));
+        table.Columns.Add(SchemaTableColumn.IsUnique, typeof(bool));
+        table.Columns.Add(SchemaTableColumn.IsKey, typeof(bool));
+        table.Columns.Add(SchemaTableOptionalColumn.BaseServerName, typeof(string));
+        table.Columns.Add(SchemaTableOptionalColumn.BaseCatalogName, typeof(string));
+        table.Columns.Add(SchemaTableColumn.BaseColumnName, typeof(string));
+        table.Columns.Add(SchemaTableColumn.BaseSchemaName, typeof(string));
+        table.Columns.Add(SchemaTableColumn.BaseTableName, typeof(string));
+        table.Columns.Add(SchemaTableColumn.DataType, typeof(Type));
+        table.Columns.Add(SchemaTableColumn.AllowDBNull, typeof(bool));
+        table.Columns.Add(SchemaTableColumn.ProviderType, typeof(int));
+        table.Columns.Add(SchemaTableColumn.IsAliased, typeof(bool));
+        table.Columns.Add(SchemaTableColumn.IsExpression, typeof(bool));
+        table.Columns.Add("IsIdentity", typeof(bool));
+        table.Columns.Add(SchemaTableOptionalColumn.IsAutoIncrement, typeof(bool));
+        table.Columns.Add(SchemaTableOptionalColumn.IsRowVersion, typeof(bool));
+        table.Columns.Add(SchemaTableOptionalColumn.IsHidden, typeof(bool));
+        table.Columns.Add(SchemaTableColumn.IsLong, typeof(bool));
+        table.Columns.Add(SchemaTableOptionalColumn.IsReadOnly, typeof(bool));
+        table.Columns.Add("DataTypeName", typeof(string));
+
+        var columns = Current?.Columns ?? Array.Empty<ResultColumn>();
+        for (var i = 0; i < columns.Count; i++)
+        {
+            var c = columns[i];
+            var row = table.NewRow();
+            row[SchemaTableColumn.ColumnName] = c.Name;
+            row[SchemaTableColumn.ColumnOrdinal] = i;
+            row[SchemaTableColumn.ColumnSize] = c.Type?.MaxLength ?? (c.Type?.IsMax == true ? int.MaxValue : 0);
+            row[SchemaTableColumn.NumericPrecision] = (short)(c.Type?.Precision ?? 0);
+            row[SchemaTableColumn.NumericScale] = (short)(c.Type?.Scale ?? 0);
+            row[SchemaTableColumn.IsUnique] = c.IsKey;
+            row[SchemaTableColumn.IsKey] = c.IsKey;
+            row[SchemaTableColumn.BaseColumnName] = (object?)c.BaseColumn ?? DBNull.Value;
+            row[SchemaTableColumn.BaseSchemaName] = c.BaseTable != null ? "dbo" : DBNull.Value;
+            row[SchemaTableColumn.BaseTableName] = (object?)c.BaseTable ?? DBNull.Value;
+            row[SchemaTableColumn.DataType] = c.ClrType;
+            row[SchemaTableColumn.AllowDBNull] = c.AllowNull;
+            row[SchemaTableColumn.ProviderType] = 0;
+            row[SchemaTableColumn.IsAliased] = c.BaseColumn != null && !string.Equals(c.BaseColumn, c.Name, StringComparison.OrdinalIgnoreCase);
+            row[SchemaTableColumn.IsExpression] = c.BaseColumn == null;
+            row["IsIdentity"] = c.IsIdentity;
+            row[SchemaTableOptionalColumn.IsAutoIncrement] = c.IsIdentity;
+            row[SchemaTableOptionalColumn.IsRowVersion] = false;
+            row[SchemaTableOptionalColumn.IsHidden] = false;
+            row[SchemaTableColumn.IsLong] = c.Type is { IsMax: true } or { Name: "text" or "ntext" or "image" };
+            row[SchemaTableOptionalColumn.IsReadOnly] = c.IsIdentity || c.BaseColumn == null;
+            row["DataTypeName"] = c.Type?.Name ?? "sql_variant";
+            table.Rows.Add(row);
+        }
+        return table;
+    }
+
+    private ResultColumn Column(int ordinal)
+    {
+        var columns = Current?.Columns;
+        if (columns == null || ordinal < 0 || ordinal >= columns.Count) throw new IndexOutOfRangeException("索引超出了数组界限。");
+        return columns[ordinal];
+    }
+}

runtime/Sim.Data/SqlClient/SqlException.cs

@@ -0,0 +1,60 @@
+using System.Data.Common;
+
+namespace System.Data.SqlClient;
+
+/// <summary>
+/// 数据库报错。Number 和 Message 与中文版 SQL Server 一致（如 208"对象名 'X' 无效。"），
+/// 学生在网上搜报错信息能找到对应的说明。
+/// </summary>
+public sealed class SqlException : DbException
+{
+    internal SqlException(int number, string message, int lineNumber = 1) : base(message, unchecked((int)0x80131904))
+    {
+        Number = number;
+        LineNumber = lineNumber;
+    }
+
+    public int Number { get; }
+    public int LineNumber { get; }
+    public byte Class => 16;
+    public byte State => 1;
+    public string Server => ".";
+    public string Procedure => "";
+
+    /// <summary>在 SqlClient 的公开方法里重新抛出：学生看到的调用栈从 SqlCommand.ExecuteNonQuery 等开始，不含平台内部的实现</summary>
+    internal SqlException Rethrow() => new(Number, Message, LineNumber);
+
+    public override string ToString() => $"{GetType().FullName} (0x80131904): {Message}{(StackTrace != null ? Environment.NewLine + StackTrace : "")}";
+
+    // ---------- 常见报错 ----------
+
+    internal static SqlException Syntax(string near, int line = 1) =>
+        new(102, IsKeyword(near) ? $"关键字 '{near}' 附近有语法错误。" : $"'{near}' 附近有语法错误。", line);
+
+    internal static SqlException InvalidObject(string name) => new(208, $"对象名 '{name}' 无效。");
+    internal static SqlException InvalidColumn(string name) => new(207, $"列名 '{name}' 无效。");
+    internal static SqlException AmbiguousColumn(string name) => new(209, $"列名 '{name}' 不明确。");
+    internal static SqlException ColumnCountMismatch() => new(213, "列名或所提供值的数目与表定义不匹配。");
+    internal static SqlException IdentityInsert(string table) => new(544, $"当 IDENTITY_INSERT 设置为 OFF 时，不能为表 '{table}' 中的标识列插入显式值。");
+    internal static SqlException NullNotAllowed(string column, string table) => new(515, $"不能将值 NULL 插入列 '{column}'，表 '{table}'；列不允许有 Null 值。INSERT 失败。");
+    internal static SqlException DuplicateKey(string table) => new(2627, $"违反了 PRIMARY KEY 约束。不能在对象 'dbo.{table}' 中插入重复键。");
+    internal static SqlException Truncated() => new(8152, "将截断字符串或二进制数据。");
+    internal static SqlException ConvertFailed(string value, string type) => new(245, $"在将 varchar 值 '{value}' 转换成数据类型 {type} 时失败。");
+    internal static SqlException DateConvertFailed() => new(241, "从字符串转换日期和/或时间时，转换失败。");
+    internal static SqlException ObjectExists(string name) => new(2714, $"数据库中已存在名为 '{name}' 的对象。");
+    internal static SqlException DatabaseExists(string name) => new(1801, $"数据库 '{name}' 已存在。请选择其他数据库名称。");
+    internal static SqlException CannotOpenDatabase(string name) => new(4060, $"无法打开登录所请求的数据库 \"{name}\"。登录失败。");
+    internal static SqlException DatabaseNotFound(string name) => new(911, $"数据库 '{name}' 不存在。请确保正确地输入了该名称。");
+    internal static SqlException DatabaseInUse(string name) => new(3702, $"无法删除数据库 \"{name}\"，因为该数据库当前正在使用。");
+    internal static SqlException CannotDropTable(string name) => new(3701, $"无法对 表 '{name}' 执行 删除，因为它不存在，或者您没有所需的权限。");
+    internal static SqlException UnknownFunction(string name) => new(195, $"'{name}' 不是可以识别的 内置函数名称。");
+    internal static SqlException UndeclaredVariable(string name) => new(137, $"必须声明标量变量 \"{name}\"。");
+    internal static SqlException DivideByZero() => new(8134, "遇到以零作除数错误。");
+    internal static SqlException NotSupported(string what) => new(40000, $"平台暂不支持 {what}。");
+
+    private static bool IsKeyword(string word) => word.ToUpperInvariant() is
+        "SELECT" or "FROM" or "WHERE" or "INSERT" or "INTO" or "VALUES" or "UPDATE" or "SET" or "DELETE" or "CREATE" or "TABLE"
+        or "DROP" or "ALTER" or "AND" or "OR" or "NOT" or "NULL" or "ORDER" or "GROUP" or "BY" or "HAVING" or "AS" or "ON"
+        or "JOIN" or "INNER" or "LEFT" or "RIGHT" or "OUTER" or "IS" or "IN" or "LIKE" or "BETWEEN" or "TOP" or "DISTINCT"
+        or "PRIMARY" or "KEY" or "IDENTITY" or "DEFAULT" or "DATABASE" or "USE" or "CASE" or "WHEN" or "THEN" or "ELSE" or "END";
+}

runtime/Sim.Devices/Camera/build-frames.ts

@@ -0,0 +1,51 @@
+// 生成网络摄像机的画面帧：把 scene.svg 渲染成全景图（有人翻墙 / 没有人两种），按云台位置切成 640×480 的 JPEG。
+// 帧文件提交在仓库里，改了 scene.svg 后重新运行：bun runtime/Sim.Devices/Camera/build-frames.ts
+// 需要 rsvg-convert（librsvg）和 magick（ImageMagick）。
+import { mkdir, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+
+/** 与 IPCameraHelper.cs 中的常量一致 */
+const VIEW = { width: 640, height: 480 }
+const STEPS = { x: 7, y: 3 }
+const STRIDE = { x: 200, y: 160 }
+
+const dir = import.meta.dir
+const framesDir = join(dir, 'frames')
+const work = join(tmpdir(), `camera-frames-${process.pid}`)
+
+async function run(cmd: string[]) {
+  const proc = Bun.spawn(cmd, { stderr: 'inherit' })
+  if ((await proc.exited) !== 0) throw new Error(`${cmd[0]} 失败`)
+}
+
+const scene = await Bun.file(join(dir, 'scene.svg')).text()
+const intruder = scene
+  .replace('id="intruder" display="none"', 'id="intruder"')
+  .replace('<path id="beam" ', '<path id="beam" display="none" ')
+  .replace('id="beam-broken" display="none"', 'id="beam-broken"')
+if (intruder === scene) throw new Error('scene.svg 里找不到 #intruder')
+
+await rm(framesDir, { recursive: true, force: true })
+await mkdir(framesDir, { recursive: true })
+await mkdir(work, { recursive: true })
+try {
+  for (const [flag, svg] of [
+    [0, scene],
+    [1, intruder],
+  ] as const) {
+    const svgPath = join(work, `scene-${flag}.svg`)
+    const pngPath = join(work, `scene-${flag}.png`)
+    await Bun.write(svgPath, svg)
+    await run(['rsvg-convert', svgPath, '-o', pngPath])
+    for (let x = 0; x < STEPS.x; x++) {
+      for (let y = 0; y < STEPS.y; y++) {
+        const crop = `${VIEW.width}x${VIEW.height}+${x * STRIDE.x}+${y * STRIDE.y}`
+        await run(['magick', pngPath, '-crop', crop, '+repage', '-strip', '-quality', '80', join(framesDir, `${x}-${y}-${flag}.jpg`)])
+      }
+    }
+  }
+} finally {
+  await rm(work, { recursive: true, force: true })
+}
+console.log(`已生成 ${STEPS.x * STEPS.y * 2} 帧：${framesDir}`)

runtime/Sim.Devices/Camera/scene.svg

@@ -0,0 +1,151 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1840" height="800" viewBox="0 0 1840 800">
+  <!-- 网络摄像机看到的场景：从校园里望向东围墙。摄像机视野 640×480，左右 7 档、上下 3 档（见 build-frames.ts）。
+       #intruder 是翻墙的人，实训台红外对射被遮挡时显示，同时对射光束断开（#beam）。 -->
+  <defs>
+    <linearGradient id="sky" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#7cb9e8"/>
+      <stop offset="1" stop-color="#d4ecfa"/>
+    </linearGradient>
+    <linearGradient id="lawn" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#8cc66d"/>
+      <stop offset="1" stop-color="#6aa84f"/>
+    </linearGradient>
+    <pattern id="bricks" width="60" height="30" patternUnits="userSpaceOnUse">
+      <rect width="60" height="30" fill="#c96f4a"/>
+      <path d="M0 15h60M0 30h60M30 0v15M0 15v15M60 15v15" stroke="#a65638" stroke-width="2"/>
+    </pattern>
+    <g id="tree">
+      <rect x="-7" y="-10" width="14" height="70" fill="#7a5230"/>
+      <circle cx="0" cy="-50" r="48" fill="#4f9a45"/>
+      <circle cx="-30" cy="-25" r="34" fill="#5aa84f"/>
+      <circle cx="30" cy="-25" r="34" fill="#468c3e"/>
+    </g>
+    <g id="pine">
+      <rect x="-6" y="-10" width="12" height="40" fill="#6b4a2b"/>
+      <path d="M0 -130 L45 -10 H-45 Z" fill="#3f7f45"/>
+      <path d="M0 -150 L35 -60 H-35 Z" fill="#4a8f4f"/>
+    </g>
+    <g id="cloud" fill="#ffffff" opacity="0.92">
+      <ellipse cx="0" cy="0" rx="70" ry="26"/>
+      <ellipse cx="-40" cy="8" rx="45" ry="20"/>
+      <ellipse cx="45" cy="6" rx="50" ry="22"/>
+      <ellipse cx="5" cy="-18" rx="40" ry="24"/>
+    </g>
+  </defs>
+
+  <!-- 天空和云 -->
+  <rect width="1840" height="460" fill="url(#sky)"/>
+  <circle cx="1620" cy="110" r="46" fill="#ffe27a"/>
+  <use href="#cloud" x="210" y="110"/>
+  <use href="#cloud" x="760" y="70" transform="scale(1)"/>
+  <use href="#cloud" x="1250" y="150"/>
+  <use href="#cloud" x="1700" y="250"/>
+  <use href="#cloud" x="420" y="260"/>
+
+  <!-- 墙外远处的楼房 -->
+  <g fill="#b9c7d6">
+    <rect x="40" y="250" width="150" height="220"/>
+    <rect x="230" y="300" width="110" height="170"/>
+    <rect x="1450" y="230" width="170" height="240"/>
+    <rect x="1660" y="290" width="130" height="180"/>
+  </g>
+  <g fill="#e6eef6">
+    <rect x="60" y="270" width="24" height="18"/><rect x="104" y="270" width="24" height="18"/><rect x="148" y="270" width="24" height="18"/>
+    <rect x="60" y="310" width="24" height="18"/><rect x="104" y="310" width="24" height="18"/><rect x="148" y="310" width="24" height="18"/>
+    <rect x="60" y="350" width="24" height="18"/><rect x="104" y="350" width="24" height="18"/><rect x="148" y="350" width="24" height="18"/>
+    <rect x="1470" y="250" width="26" height="20"/><rect x="1520" y="250" width="26" height="20"/><rect x="1570" y="250" width="26" height="20"/>
+    <rect x="1470" y="295" width="26" height="20"/><rect x="1520" y="295" width="26" height="20"/><rect x="1570" y="295" width="26" height="20"/>
+    <rect x="1470" y="340" width="26" height="20"/><rect x="1520" y="340" width="26" height="20"/><rect x="1570" y="340" width="26" height="20"/>
+  </g>
+
+  <!-- 墙外的教学楼（对面学校） -->
+  <rect x="560" y="200" width="620" height="270" fill="#f2e3c9"/>
+  <rect x="540" y="185" width="660" height="22" fill="#c98b5a"/>
+  <rect x="820" y="140" width="100" height="50" fill="#f2e3c9"/>
+  <rect x="810" y="130" width="120" height="14" fill="#c98b5a"/>
+  <circle cx="870" cy="166" r="16" fill="#ffffff" stroke="#8a6a4a" stroke-width="3"/>
+  <path d="M870 166 V156 M870 166 H878" stroke="#8a6a4a" stroke-width="3"/>
+  <g fill="#7fa6c8">
+    <rect x="590" y="225" width="50" height="40"/><rect x="670" y="225" width="50" height="40"/><rect x="750" y="225" width="50" height="40"/>
+    <rect x="940" y="225" width="50" height="40"/><rect x="1020" y="225" width="50" height="40"/><rect x="1100" y="225" width="50" height="40"/>
+    <rect x="590" y="295" width="50" height="40"/><rect x="670" y="295" width="50" height="40"/><rect x="750" y="295" width="50" height="40"/>
+    <rect x="940" y="295" width="50" height="40"/><rect x="1020" y="295" width="50" height="40"/><rect x="1100" y="295" width="50" height="40"/>
+    <rect x="590" y="365" width="50" height="40"/><rect x="670" y="365" width="50" height="40"/><rect x="750" y="365" width="50" height="40"/>
+    <rect x="940" y="365" width="50" height="40"/><rect x="1020" y="365" width="50" height="40"/><rect x="1100" y="365" width="50" height="40"/>
+  </g>
+  <rect x="835" y="380" width="70" height="90" fill="#8a6a4a"/>
+
+  <!-- 墙外的树 -->
+  <use href="#pine" x="420" y="470"/>
+  <use href="#pine" x="1300" y="470"/>
+  <use href="#pine" x="1380" y="475"/>
+
+  <!-- 东围墙 -->
+  <rect x="0" y="440" width="1840" height="140" fill="url(#bricks)"/>
+  <rect x="0" y="428" width="1840" height="16" fill="#e8d8c4"/>
+  <g fill="#b5603f">
+    <rect x="0" y="420" width="40" height="160"/>
+    <rect x="460" y="420" width="40" height="160"/>
+    <rect x="920" y="420" width="40" height="160"/>
+    <rect x="1380" y="420" width="40" height="160"/>
+    <rect x="1800" y="420" width="40" height="160"/>
+  </g>
+  <g fill="#e8d8c4">
+    <rect x="-6" y="412" width="52" height="12"/><rect x="454" y="412" width="52" height="12"/>
+    <rect x="914" y="412" width="52" height="12"/><rect x="1374" y="412" width="52" height="12"/>
+    <rect x="1794" y="412" width="52" height="12"/>
+  </g>
+
+  <!-- 墙头的红外对射：两个探头和红色光束 -->
+  <g>
+    <rect x="474" y="384" width="16" height="28" rx="3" fill="#3a3f47"/>
+    <rect x="478" y="390" width="8" height="6" fill="#e04040"/>
+    <rect x="1384" y="384" width="16" height="28" rx="3" fill="#3a3f47"/>
+    <rect x="1388" y="390" width="8" height="6" fill="#e04040"/>
+    <path id="beam" d="M490 393 H1384" stroke="#ff3b3b" stroke-width="2" stroke-dasharray="10 6" opacity="0.8"/>
+    <g id="beam-broken" display="none" stroke="#ff3b3b" stroke-width="2" stroke-dasharray="10 6" opacity="0.8">
+      <path d="M490 393 H880"/>
+    </g>
+  </g>
+
+  <!-- 翻墙的人 -->
+  <g id="intruder" display="none">
+    <!-- 腿：一条跨在墙头，一条垂在墙里侧 -->
+    <path d="M905 430 L870 470 L880 520" stroke="#2f3b55" stroke-width="18" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
+    <path d="M915 430 L955 455 L985 440" stroke="#2f3b55" stroke-width="18" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
+    <ellipse cx="882" cy="526" rx="16" ry="8" fill="#222"/>
+    <!-- 身体 -->
+    <path d="M890 360 Q910 350 930 362 L925 435 H895 Z" fill="#2c2c2c"/>
+    <!-- 手臂撑在墙头 -->
+    <path d="M895 372 L860 410 L870 428" stroke="#2c2c2c" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
+    <path d="M928 372 L955 405 L945 428" stroke="#2c2c2c" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
+    <!-- 头和帽子 -->
+    <circle cx="910" cy="332" r="22" fill="#e9b88f"/>
+    <path d="M887 330 Q910 296 934 330 Z" fill="#1d1d1d"/>
+    <rect x="895" y="328" width="30" height="7" fill="#1d1d1d"/>
+    <!-- 背包 -->
+    <rect x="922" y="372" width="22" height="34" rx="5" fill="#8b3a3a"/>
+  </g>
+
+  <!-- 墙里侧：草地、小路、路灯、树、灌木 -->
+  <rect x="0" y="580" width="1840" height="220" fill="url(#lawn)"/>
+  <path d="M0 640 Q600 610 1000 650 T1840 630 V700 Q1300 720 900 700 T0 720 Z" fill="#d9c9a8"/>
+  <g fill="#3f8a3a">
+    <ellipse cx="120" cy="590" rx="90" ry="30"/>
+    <ellipse cx="700" cy="592" rx="110" ry="28"/>
+    <ellipse cx="1160" cy="590" rx="100" ry="30"/>
+    <ellipse cx="1640" cy="592" rx="120" ry="30"/>
+  </g>
+  <use href="#tree" x="300" y="640"/>
+  <use href="#tree" x="1560" y="650"/>
+  <g>
+    <rect x="1236" y="470" width="10" height="200" fill="#505a66"/>
+    <path d="M1241 476 Q1241 450 1275 450 H1290" stroke="#505a66" stroke-width="8" fill="none"/>
+    <rect x="1280" y="446" width="34" height="12" rx="4" fill="#3d4652"/>
+    <ellipse cx="1297" cy="460" rx="14" ry="4" fill="#fff6c4"/>
+  </g>
+  <g fill="#6aa84f">
+    <circle cx="40" cy="770" r="6"/><circle cx="520" cy="760" r="5"/><circle cx="980" cy="775" r="6"/>
+    <circle cx="1420" cy="765" r="5"/><circle cx="1780" cy="772" r="6"/>
+  </g>
+</svg>

runtime/Sim.Devices/DeviceCtrlLibrary/DeviceCtrlHelper.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using DeviceCtrlLibrary.Model;
 using Sim.Host;
@@ -7,7 +8,8 @@ namespace DeviceCtrlLibrary;
 
 /// <summary>
 /// 教材的设备控制入口：DeviceCtrlHelper.ledHelper.SendLedString(...) 等。
-/// 返回值约定与教材仿真版 dll 保持一致；不同之处是数值来自虚拟实训台，而不是随机数。
+/// 返回值约定与教材仿真版 dll 保持一致；不同之处是数值来自虚拟实训台，而不是随机数，
+/// 并且和真机版一样，设备要在它接的那个串口上打开才有反应（接线见 TrainingBoard）。
 /// </summary>
 public class DeviceCtrlHelper
 {
@@ -17,6 +19,39 @@ public class DeviceCtrlHelper
     public static ADAM4017Helper adam4017Helper = new();
     public static ADAM4150Helper adam4150Helper = new();
     public static ZigBeeHelper zigBeeHelper = new();
+    public static IPCameraHelper ipCameraHelper = new();
+}
+
+/// <summary>
+/// 告诉实训台程序在哪个串口上打开、关闭了设备，以及串口没打开时还在读写设备（网页上据此提示）。
+/// 没变就不发：书上有在定时器里反复 Open 的写法；没打开时的读写每次打开之后最多报一次
+/// </summary>
+internal static class PortReport
+{
+    private static readonly HashSet<string> Unopened = new();
+
+    public static string? Open(string device, string? current, string? portName)
+    {
+        lock (Unopened) Unopened.Remove(device);
+        if (current != portName) SimHost.SendDevice(device, "open", portName ?? "");
+        return portName;
+    }
+
+    public static string? Close(string device, string? current)
+    {
+        if (current is not null) SimHost.SendDevice(device, "close", null);
+        return null;
+    }
+
+    /// <summary>串口没打开（portName 为空）时返回 true，并报告一次</summary>
+    public static bool NotOpen(string device, string? portName)
+    {
+        if (!string.IsNullOrWhiteSpace(portName)) return false;
+        bool first;
+        lock (Unopened) first = Unopened.Add(device);
+        if (first) SimHost.SendDevice(device, "unopened", null);
+        return true;
+    }
 }
 
 public class SerialPortHelper
@@ -47,18 +82,21 @@ public class LEDHelper
     private const string SendFailed = "Error:发送失败";
     private string? _portName;
 
-    public void OpenLedCom(string portName) => _portName = portName;
+    public void OpenLedCom(string portName) => _portName = PortReport.Open("led", _portName, portName);
 
-    /// <summary>成功时原样返回发送的文字，并显示到实训台的 LED 屏上；串口未打开时返回 "Error:发送失败"</summary>
+    /// <summary>
+    /// 成功时原样返回发送的文字，并显示到实训台的 LED 屏上；串口未打开时返回 "Error:发送失败"。
+    /// 打开的串口上没接 LED 屏时和真机一样也原样返回（真机只管发出去、不等回应），只是屏上不显示
+    /// </summary>
     public string SendLedString(string sendString)
     {
-        if (string.IsNullOrWhiteSpace(_portName)) return SendFailed;
+        if (PortReport.NotOpen("led", _portName)) return SendFailed;
-        SimHost.SendDevice("led", "text", sendString);
+        if (TrainingBoard.Reaches("led", _portName)) SimHost.SendDevice("led", "text", sendString);
         return sendString;
     }
 
-    /// <summary>教材 dll 里没有这个方法，但书上项目 2 任务 3 调用了它；保留空方法让书上代码能编译</summary>
+    /// <summary>教材 dll 里没有这个方法，但书上项目 2 任务 3 调用了它；保留它让书上代码能编译</summary>
-    public void Close() => _portName = null;
+    public void Close() => _portName = PortReport.Close("led", _portName);
 }
 
 public class ADAM4017Helper
@@ -69,18 +107,19 @@ public class ADAM4017Helper
     public void Open(string PortName, int Temperature_Port = 0, int Humidity_Port = 1, int Light_Port = 2,
         int AirPressure_Port = 3, int AirQuality_Port = 4, int CO2_Port = 5, int Wind_Port = 6)
     {
-        _portName = PortName;
+        _portName = PortReport.Open("adam4017", _portName, PortName);
         _channels = new[] { Temperature_Port, Humidity_Port, Light_Port, AirPressure_Port, AirQuality_Port, CO2_Port, Wind_Port };
     }
 
     /// <summary>
     /// 读取各通道数值。数值一律是整数字符串（教材项目 7 用 Convert.ToInt16 转换，带小数会出错）；
-    /// 串口未打开时所有属性为 null，与教材仿真版一致。
+    /// 串口未打开时所有属性为 null，与教材仿真版一致；打开的串口上没接 4017+ 时收不到回应，和真机版一样也全是 null。
     /// </summary>
     public ADAM4017ResModel SetData()
     {
+        LegacyThreads.CheckPoint();
         var model = new ADAM4017ResModel();
-        if (string.IsNullOrWhiteSpace(_portName)) return model;
+        if (PortReport.NotOpen("adam4017", _portName) || !TrainingBoard.Reaches("adam4017", _portName)) return model;
         model.temperatureValue = Read(0);
         model.humidityValue = Read(1);
         model.lightValue = Read(2);
@@ -93,7 +132,7 @@ public class ADAM4017Helper
 
     private string Read(int quantity) => TrainingBoard.ReadAnalog(_channels[quantity]).ToString();
 
-    public void Close() => _portName = null;
+    public void Close() => _portName = PortReport.Close("adam4017", _portName);
 }
 
 public class ADAM4150Helper
@@ -103,15 +142,16 @@ public class ADAM4150Helper
 
     public void Open(string PortName, int BodyInfrared_Port = 0, int Fire_Port = 1, int Smoke_Port = 2, int Infrared_Port = 3)
     {
-        _portName = PortName;
+        _portName = PortReport.Open("adam4150", _portName, PortName);
         _channels = new[] { BodyInfrared_Port, Fire_Port, Smoke_Port, Infrared_Port };
     }
 
-    /// <summary>读取人体红外、火焰、烟雾、红外对射；串口未打开时全部为 false</summary>
+    /// <summary>读取人体红外、火焰、烟雾、红外对射；串口未打开、或打开的串口上没接 4150（收不到回应）时全部为 false</summary>
     public ADAM4150ResModel SetData()
     {
+        LegacyThreads.CheckPoint();
         var model = new ADAM4150ResModel();
-        if (string.IsNullOrWhiteSpace(_portName)) return model;
+        if (PortReport.NotOpen("adam4150", _portName) || !TrainingBoard.Reaches("adam4150", _portName)) return model;
         model.bodyInfraredValue = Read(0);
         model.fireValue = Read(1);
         model.smokeValue = Read(2);
@@ -123,31 +163,35 @@ public class ADAM4150Helper
 
     /// <summary>
     /// 控制继电器 DO0–DO4（DO0 报警灯、DO1 照明灯、DO2 路灯、DO3/DO4 插座）。
-    /// 和真实设备一样，串口没有打开时控制无效、返回 false（教材仿真版不检查，这里更贴近实物）。
+    /// 和真实设备一样，串口没有打开时控制无效、返回 false（教材仿真版不检查，这里更贴近实物）；
+    /// 真机版只管发出命令、不等回应，所以打开的串口上没接 4150 时也返回 true，只是继电器不动作。
     /// </summary>
     public bool OnOff(int DO, bool IsOpen)
     {
-        if (DO < 0 || DO > 4 || string.IsNullOrWhiteSpace(_portName)) return false;
+        if (DO < 0 || DO > 4 || PortReport.NotOpen("adam4150", _portName)) return false;
-        SimHost.SendDevice("adam4150", "do", new[] { DO, IsOpen ? 1 : 0 });
+        if (TrainingBoard.Reaches("adam4150", _portName)) SimHost.SendDevice("adam4150", "do", new[] { DO, IsOpen ? 1 : 0 });
         return true;
     }
 
-    public void Close() => _portName = null;
+    public void Close() => _portName = PortReport.Close("adam4150", _portName);
 }
 
 public class ZigBeeHelper
 {
     private string? _portName;
 
-    public void Open(string PortName) => _portName = PortName;
+    public void Open(string PortName) => _portName = PortReport.Open("zigbee", _portName, PortName);
 
-    /// <summary>控制 ZigBee 继电器节点 0、1（教材用节点 1 控制路灯）；串口没有打开时控制无效、返回 false</summary>
+    /// <summary>
+    /// 控制 ZigBee 继电器节点 0、1（教材用节点 1 控制路灯）；串口没有打开时控制无效、返回 false。
+    /// 真机版要等协调器回应，打开的串口上没接协调器时收不到回应，也返回 false
+    /// </summary>
     public bool OnOff(int RelayNum, bool IsOpen)
     {
-        if (RelayNum < 0 || RelayNum > 1 || string.IsNullOrWhiteSpace(_portName)) return false;
+        if (RelayNum < 0 || RelayNum > 1 || PortReport.NotOpen("zigbee", _portName) || !TrainingBoard.Reaches("zigbee", _portName)) return false;
         SimHost.SendDevice("zigbee", "relay", new[] { RelayNum, IsOpen ? 1 : 0 });
         return true;
     }
 
-    public void Close() => _portName = null;
+    public void Close() => _portName = PortReport.Close("zigbee", _portName);
 }

runtime/Sim.Devices/DeviceCtrlLibrary/IPCameraHelper.cs

@@ -0,0 +1,127 @@
+using System;
+using System.Drawing;
+using System.IO;
+using System.Threading;
+using Sim.Host;
+
+namespace DeviceCtrlLibrary;
+
+/// <summary>摄像头每拍到一帧画面时触发（教材 dll 里的委托名就是 CameraImage）</summary>
+public delegate void CameraImage(ImageReadEvenArgs e);
+
+public class ImageEventArgs : EventArgs { }
+
+/// <summary>摄像头画面事件的参数；类名拼写与教材 dll 一致（EvenArgs）</summary>
+public class ImageReadEvenArgs
+{
+    public ImageEventArgs ImageEventArg { get; set; }
+    public Image img { get; set; }
+}
+
+/// <summary>
+/// 网络摄像机。画面是自绘的东围墙场景（Camera/scene.svg 切出的帧）：Pan 方法每次转动一格，
+/// 实训台的红外对射被遮挡时画面里出现翻墙的人。和教材仿真版一样，ImageRead 在后台线程上定时触发。
+/// </summary>
+public class IPCameraHelper
+{
+    // 与 Camera/build-frames.ts 一致：左右 7 档、上下 3 档，开始时在正中
+    private const int StepsX = 7;
+    private const int StepsY = 3;
+    private const int FrameIntervalMs = 250;
+
+    private static readonly string FramesDir = Path.Combine(Path.GetDirectoryName(typeof(IPCameraHelper).Assembly.Location)!, "Camera", "frames");
+    private static readonly Image?[] Frames = new Image?[StepsX * StepsY * 2];
+
+    private readonly object _lock = new();
+    private string? _ip;
+    private Timer? _timer;
+    private int _x = StepsX / 2;
+    private int _y = StepsY / 2;
+    private int _ticking;
+    private bool _errorReported;
+
+    public event CameraImage ImageRead;
+
+    /// <summary>连接摄像机。任何非空的 IP 都能连上（教材用 admin、空密码）</summary>
+    public void Open(string IpAdderss, string Uid, string Pwd) => _ip = IpAdderss;
+
+    /// <summary>开始传送画面；没有 Open 时不传</summary>
+    public void Start()
+    {
+        if (string.IsNullOrWhiteSpace(_ip)) return;
+        lock (_lock)
+        {
+            _timer ??= new Timer(_ => Tick());
+            _timer.Change(0, FrameIntervalMs);
+        }
+        SimHost.SendDevice("camera", "on", true);
+    }
+
+    public void Stop()
+    {
+        lock (_lock) _timer?.Change(Timeout.Infinite, Timeout.Infinite);
+        SimHost.SendDevice("camera", "on", false);
+    }
+
+    public void Close()
+    {
+        Stop();
+        _ip = null;
+    }
+
+    public void PanLeft() => Pan(-1, 0);
+    public void PanRight() => Pan(1, 0);
+    public void PanUp() => Pan(0, -1);
+    public void PanDown() => Pan(0, 1);
+
+    /// <summary>云台转动一格，到头后不再转；没有 Open 时无效</summary>
+    private void Pan(int dx, int dy)
+    {
+        if (string.IsNullOrWhiteSpace(_ip)) return;
+        int x, y;
+        lock (_lock)
+        {
+            _x = Math.Clamp(_x + dx, 0, StepsX - 1);
+            _y = Math.Clamp(_y + dy, 0, StepsY - 1);
+            (x, y) = (_x, _y);
+        }
+        SimHost.SendDevice("camera", "pan", new[] { x, y });
+    }
+
+    private void Tick()
+    {
+        // 上一帧的处理方法还没执行完时跳过这一帧
+        if (Interlocked.Exchange(ref _ticking, 1) == 1) return;
+        try
+        {
+            var handler = ImageRead;
+            if (handler == null) return;
+            int x, y;
+            lock (_lock) (x, y) = (_x, _y);
+            handler(new ImageReadEvenArgs { ImageEventArg = new ImageEventArgs(), img = Frame(x, y, TrainingBoard.ReadDigital(3)) });
+        }
+        catch (Exception ex)
+        {
+            // 教材仿真版用 System.Timers.Timer，处理方法里的异常不会让程序退出；这里报告一次，之后照常传画面
+            if (!_errorReported)
+            {
+                _errorReported = true;
+                SimHost.ReportException(ex);
+            }
+        }
+        finally
+        {
+            Volatile.Write(ref _ticking, 0);
+        }
+    }
+
+    /// <summary>同一位置的画面复用同一个 Image 对象：赋给 PictureBox 的是同一张图时不用重新发送</summary>
+    private static Image Frame(int x, int y, bool intruder)
+    {
+        var index = (y * StepsX + x) * 2 + (intruder ? 1 : 0);
+        lock (Frames)
+        {
+            return Frames[index] ??= Image.FromStream(new MemoryStream(File.ReadAllBytes(Path.Combine(FramesDir, $"{x}-{y}-{(intruder ? 1 : 0)}.jpg"))));
+        }
+    }
+}

runtime/Sim.Devices/DeviceCtrlLibrary/TrainingBoard.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Text.Json.Nodes;
 
 namespace DeviceCtrlLibrary;
@@ -15,6 +16,14 @@ public static class TrainingBoard
     private static int[] _analog = { 25, 60, 500, 101, 60, 600, 3, 0 };
     // ADAM-4150 DI0–DI6（人体红外、火焰、烟雾、红外对射、预留）
     private static bool[] _digital = new bool[7];
+    // 接线：设备 → 串口（教材布局图的接法，随实验而定，见 shared/protocol.ts 的 DEFAULT_WIRING）
+    private static readonly Dictionary<string, string> Wiring = new()
+    {
+        ["adam4017"] = "COM2",
+        ["adam4150"] = "COM3",
+        ["zigbee"] = "COM4",
+        ["led"] = "COM5",
+    };
 
     static TrainingBoard()
     {
@@ -22,18 +31,32 @@ public static class TrainingBoard
         if (!string.IsNullOrEmpty(initial) && JsonNode.Parse(initial) is JsonObject json) Update(json);
     }
 
-    /// <summary>平台内部使用：应用服务器推送的 {"analog":[…],"digital":[…]}</summary>
+    /// <summary>平台内部使用：应用服务器推送的 {"analog":[…],"digital":[…],"clock":…,"wiring":{…}}（clock、wiring 不带时表示不变）</summary>
     public static void Update(JsonObject json)
     {
+        if (json.ContainsKey("clock")) Sim.Host.SimClock.Update(json["clock"]);
         lock (Lock)
         {
             if (json["analog"] is JsonArray analog)
                 for (var i = 0; i < analog.Count && i < _analog.Length; i++) _analog[i] = (int?)analog[i] ?? 0;
             if (json["digital"] is JsonArray digital)
                 for (var i = 0; i < digital.Count && i < _digital.Length; i++) _digital[i] = (bool?)digital[i] ?? false;
+            if (json["wiring"] is JsonObject wiring)
+                foreach (var (device, port) in wiring)
+                    if (Wiring.ContainsKey(device) && port is not null) Wiring[device] = (string)port!;
         }
     }
 
+    /// <summary>
+    /// 程序打开的串口上有没有接这台设备。和真机一样，串口打开错了不报错，只是设备收不到命令、也不回应。
+    /// Windows 的串口名不分大小写
+    /// </summary>
+    internal static bool Reaches(string device, string? portName)
+    {
+        if (string.IsNullOrWhiteSpace(portName)) return false;
+        lock (Lock) return Wiring.TryGetValue(device, out var port) && string.Equals(port, portName.Trim(), StringComparison.OrdinalIgnoreCase);
+    }
+
     internal static int ReadAnalog(int channel)
     {
         lock (Lock) return channel >= 0 && channel < _analog.Length ? _analog[channel] : 0;

runtime/Sim.Devices/Sim.Devices.csproj

@@ -6,6 +6,10 @@
     <RootNamespace>DeviceCtrlLibrary</RootNamespace>
     <NoWarn>$(NoWarn);CS1591;CS8618;IDE1006</NoWarn>
   </PropertyGroup>
+  <ItemGroup>
+    <!-- 网络摄像机的画面帧（由 Camera/build-frames.ts 生成），随运行器一起输出 -->
+    <None Include="Camera/frames/*.jpg" CopyToOutputDirectory="PreserveNewest" LinkBase="Camera/frames" />
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="../Sim.WinForms/Sim.WinForms.csproj" />
   </ItemGroup>

runtime/Sim.Runner/ApiPolicy.cs

@@ -0,0 +1,111 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 编译时检查学生代码用到的 API：网络、启动外部程序、反射、调用本机代码等课程用不到、只会带来风险的功能，
+/// 直接给出中文报错。真正的隔离靠运行时沙箱，这里是第二道防线，也让学生看到明确的原因。
+/// </summary>
+internal static class ApiPolicy
+{
+#pragma warning disable RS2008 // 不是分析器，不需要发布跟踪
+    private static readonly DiagnosticDescriptor NotAllowed = new(
+        "SIM001", "平台不允许使用的功能", "平台不允许使用 {0}（{1}）", "Usage", DiagnosticSeverity.Error, isEnabledByDefault: true);
+#pragma warning restore RS2008
+
+    /// <summary>整个命名空间（含子命名空间）都不允许</summary>
+    private static readonly (string Namespace, string Reason)[] DeniedNamespaces =
+    {
+        ("System.Net", "网络访问"),
+        ("System.Reflection", "反射"),
+        ("System.Runtime.Loader", "加载程序集"),
+        ("System.IO.Pipes", "进程间通信"),
+        ("System.IO.MemoryMappedFiles", "进程间通信"),
+    };
+
+    /// <summary>单个类型不允许（所在命名空间的其他类型可以用）</summary>
+    private static readonly Dictionary<string, string> DeniedTypes = new()
+    {
+        ["System.Diagnostics.Process"] = "启动其他程序",
+        ["System.Diagnostics.ProcessStartInfo"] = "启动其他程序",
+        ["System.AppDomain"] = "加载程序集",
+        ["System.Runtime.InteropServices.Marshal"] = "调用本机代码",
+        ["System.Runtime.InteropServices.DllImportAttribute"] = "调用本机代码",
+        ["System.Runtime.InteropServices.LibraryImportAttribute"] = "调用本机代码",
+        ["System.Runtime.InteropServices.NativeLibrary"] = "调用本机代码",
+        ["System.Runtime.InteropServices.NativeMemory"] = "调用本机代码",
+    };
+
+    /// <summary>
+    /// 不允许的类型里单独放行的成员：教材用 AppDomain.CurrentDomain.BaseDirectory 拼出保存照片的路径；
+    /// 类型的名字（GetType().Name、DataColumn.DataType.Name）只是读名字，没有风险
+    /// </summary>
+    private static readonly HashSet<string> AllowedMembers = new()
+    {
+        "System.AppDomain.CurrentDomain",
+        "System.AppDomain.BaseDirectory",
+        "System.Reflection.MemberInfo.Name",
+        "System.Type.FullName",
+    };
+
+    public static IEnumerable<Diagnostic> Check(CSharpCompilation compilation)
+    {
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            foreach (var name in tree.GetRoot().DescendantNodes().OfType<SimpleNameSyntax>())
+            {
+                // A.B.C 只检查最右边的名字，避免同一处报好几次
+                if (name.Parent is QualifiedNameSyntax q && q.Left == name) continue;
+                // var 推断出的类型在初始化表达式里已经检查过
+                if (name is IdentifierNameSyntax { IsVar: true }) continue;
+                // 类型名只是用来限定成员（AppDomain.CurrentDomain、System.AppDomain.CurrentDomain）：检查后面的成员就够了
+                ExpressionSyntax qualifier = name.Parent is MemberAccessExpressionSyntax inner && inner.Name == name ? inner : name;
+                if (qualifier.Parent is MemberAccessExpressionSyntax m && m.Expression == qualifier && model.GetSymbolInfo(name).Symbol is INamespaceOrTypeSymbol) continue;
+
+                var symbol = model.GetSymbolInfo(name).Symbol;
+                if (symbol == null) continue;
+                if (Reason(symbol) is { } reason)
+                {
+                    yield return Diagnostic.Create(NotAllowed, name.GetLocation(), Display(symbol), reason);
+                }
+            }
+        }
+    }
+
+    private static string? Reason(ISymbol symbol)
+    {
+        if (symbol is IDynamicTypeSymbol) return "dynamic 动态调用";
+        // using 指令里的命名空间不算：VS 生成的 AssemblyInfo.cs 会 using System.Runtime.InteropServices
+        if (symbol is INamespaceSymbol) return null;
+        if (symbol is IPropertySymbol && AllowedMembers.Contains($"{symbol.ContainingType.ToDisplayString()}.{symbol.Name}")) return null;
+        var type = symbol as INamedTypeSymbol ?? symbol.ContainingType;
+        // 方法的返回值、参数类型由调用处检查；这里看符号本身属于哪个类型
+        for (var t = type; t != null; t = t.ContainingType)
+        {
+            var fullName = t.OriginalDefinition.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat).Replace("global::", "");
+            if (DeniedTypes.TryGetValue(fullName, out var reason)) return reason;
+        }
+        if (type == null) return null;
+        // AssemblyInfo.cs 里的 [assembly: AssemblyTitle(...)] 等特性可以用
+        if (type.Name.EndsWith("Attribute") && type.ContainingNamespace.ToDisplayString() == "System.Reflection") return null;
+        var ns = type.ContainingNamespace.ToDisplayString();
+        foreach (var (denied, reason) in DeniedNamespaces)
+        {
+            if (ns == denied || ns.StartsWith(denied + ".")) return reason;
+        }
+        return null;
+    }
+
+    private static string Display(ISymbol symbol) => symbol switch
+    {
+        IDynamicTypeSymbol => "dynamic",
+        INamedTypeSymbol type => type.ToDisplayString(),
+        _ => $"{symbol.ContainingType.ToDisplayString()}.{symbol.Name}",
+    };
+}

runtime/Sim.Runner/ClockRewriter.cs

@@ -0,0 +1,69 @@
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 编译前把学生代码里的 DateTime.Now / Today / UtcNow 改写成虚拟时钟 Sim.Host.SimClock（实训台上可以拨时间、调倍速，
+/// 教材项目 7 按 6:45 起床、22:00 熄灯等时刻切换情景模式）。只改写语义上确实是 System.DateTime 这三个属性的地方；
+/// 改写不换行，报错和异常里的行号不变。学生在编辑器里看到的仍是原来的代码。
+/// </summary>
+internal static class ClockRewriter
+{
+    private const string Target = "global::Sim.Host.SimClock";
+
+    public static CSharpCompilation Rewrite(CSharpCompilation compilation)
+    {
+        var result = compilation;
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            var text = tree.GetText().ToString();
+            if (!text.Contains("Now") && !text.Contains("Today")) continue;
+            var rewriter = new Rewriter(compilation.GetSemanticModel(tree));
+            var root = rewriter.Visit(tree.GetRoot());
+            if (!rewriter.Changed) continue;
+            result = result.ReplaceSyntaxTree(tree,
+                CSharpSyntaxTree.ParseText(SourceText.From(root.ToFullString(), Encoding.UTF8), (CSharpParseOptions)tree.Options, tree.FilePath));
+        }
+        return result;
+    }
+
+    private static string? Replacement(ISymbol? symbol) =>
+        symbol is IPropertySymbol { IsStatic: true, Name: "Now" or "Today" or "UtcNow" } property
+        && property.ContainingType.SpecialType == SpecialType.System_DateTime
+            ? $"{Target}.{property.Name}"
+            : null;
+
+    private sealed class Rewriter(SemanticModel model) : CSharpSyntaxRewriter
+    {
+        public bool Changed { get; private set; }
+
+        public override SyntaxNode? VisitMemberAccessExpression(MemberAccessExpressionSyntax node)
+        {
+            // DateTime.Now、System.DateTime.Now
+            if (Replacement(model.GetSymbolInfo(node).Symbol) is { } replacement)
+            {
+                Changed = true;
+                return SyntaxFactory.ParseExpression(replacement).WithTriviaFrom(node);
+            }
+            return base.VisitMemberAccessExpression(node);
+        }
+
+        public override SyntaxNode? VisitIdentifierName(IdentifierNameSyntax node)
+        {
+            // using static System.DateTime; 之后直接写 Now
+            if (node.Parent is not MemberAccessExpressionSyntax access || access.Expression == node)
+            {
+                if (Replacement(model.GetSymbolInfo(node).Symbol) is { } replacement)
+                {
+                    Changed = true;
+                    return SyntaxFactory.ParseExpression(replacement).WithTriviaFrom(node);
+                }
+            }
+            return base.VisitIdentifierName(node);
+        }
+    }
+}

runtime/Sim.Runner/CompileHints.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using Microsoft.CodeAnalysis;
 
 namespace Sim.Runner;
@@ -17,11 +18,38 @@ internal static class CompileHints
             ("CS0103", "Catch") or ("CS0246", "Catch") => "catch 要小写，括号里写异常类型，例如 catch (Exception ex)。",
             ("CS0246", var name) when name.StartsWith("bool") || name.StartsWith("private") || name.StartsWith("public") || name.StartsWith("string") || name.StartsWith("int") =>
                 $"“{name}”像是类型和名字之间少了一个空格。",
+            ("CS0234", var s) when s.Contains("Properties") => "要用 Properties.Resources，先点代码上方的“项目资源”，添加需要的图片或声音。",
+            ("CS0117", var s) when s.Contains("Resources.") => $"项目资源里还没有“{s[(s.LastIndexOf('.') + 1)..]}”：点代码上方的“项目资源”添加（名字要和代码里一致）。",
             ("CS0103", _) => $"找不到“{source}”。检查拼写和大小写（C# 区分大小写），以及控件的 Name 是否和代码里一致。",
             ("CS1002", _) => "C# 每条语句末尾要有英文分号 ;",
             ("CS1056", _) or ("CS1525", _) when source.Length == 1 && source[0] > 127 => "这里出现了中文标点，C# 代码里的符号要用英文半角。",
             ("CS0029", _) => "等号两边的类型不一致。如果要把文本框里的文字变成数字，可以用 int.Parse(...) 或 Convert.ToInt32(...)。",
+            ("CS8026", _) => Vs2012(diagnostic),
             _ => null,
         };
     }
+
+    /// <summary>导出工程时照机房的 VS 2012 只能用 C# 5，新版 C# 的写法（报错里给出功能名）说明怎么改</summary>
+    private static readonly (string Feature, string Fix)[] NewerFeatures =
+    {
+        ("内插字符串", "$\"…{x}…\" 改成 string.Format(\"…{0}…\", x)，或者用 + 把字符串连起来"),
+        ("空传播运算符", "a?.b 改成先判断是否为 null，例如 a != null ? a.b : null"),
+        ("nameof", "nameof(x) 直接写成字符串 \"x\""),
+        ("expression-bodied", "=> 改成大括号，方法写成 { return …; }，属性写成 { get { return …; } }"),
+        ("自动属性初始值", "属性后面的 = 初始值 去掉，改到构造函数里赋值"),
+        ("化出变量", "out var x 改成先声明变量（如 int x;），再写 out x"),
+        ("字典初始值", "[\"键\"] = 值 改成 { \"键\", 值 }"),
+        ("模式匹配", "x is 类型 y 改成先用 as 转换，再判断是否为 null"),
+        ("本地函数", "方法里的方法挪到类里，写成一个 private 方法"),
+        ("default 字面量", "default 写成 default(类型)，例如 default(int)"),
+        ("元组", "改成定义一个类，或者用 out 参数返回多个值"),
+        ("异常筛选器", "catch (…) when (条件) 改成在 catch 里用 if 判断"),
+    };
+
+    private static string Vs2012(Diagnostic diagnostic)
+    {
+        var message = diagnostic.GetMessage(System.Globalization.CultureInfo.GetCultureInfo("zh-Hans"));
+        var fix = NewerFeatures.FirstOrDefault(f => message.Contains(f.Feature)).Fix;
+        return "机房的 VS 2012 只支持 C# 5，不认这种写法" + (fix == null ? "，换成老的写法。" : $"：{fix}。");
+    }
 }

runtime/Sim.Runner/CompileServer.cs

@@ -11,12 +11,16 @@ namespace Sim.Runner;
 /// <summary>
 /// 常驻编译服务：从标准输入读取 {"id":…,"dir":…}，编译该目录下的学生工程，
 /// 成功时把 StudentApp.dll / StudentApp.pdb 写到同一目录，回复 {"id":…,"type":"compiled",…}。
+/// 请求带 "export":{"libs":…,"name":…} 时导出 EXE（见 ExeExporter），写到同一目录的 export.exe；
+/// 带 "export":{"kind":"project",…} 时导出 VS 工程（见 ProjectExporter），写到同一目录的 export.zip。
 /// 编译器常驻，第一次之后的编译不再有加载和预热开销。
 /// </summary>
 internal static class CompileServer
 {
     public const string AssemblyFile = "StudentApp.dll";
     public const string PdbFile = "StudentApp.pdb";
+    public const string ExportFile = "export.exe";
+    public const string ExportProjectFile = "export.zip";
 
     private static readonly JsonSerializerOptions JsonOptions = new() { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping };
 
@@ -36,7 +40,10 @@ internal static class CompileServer
             {
                 var request = JsonNode.Parse(line)!.AsObject();
                 id = request["id"]?.DeepClone();
-                reply = Compile((string?)request["dir"] ?? throw new ArgumentException("缺少 dir"));
+                var dir = (string?)request["dir"] ?? throw new ArgumentException("缺少 dir");
+                reply = request["export"] is JsonObject export
+                    ? Export(dir, (string?)export["kind"] == "project", (string?)export["libs"] ?? "", (string?)export["name"] ?? "")
+                    : Compile(dir);
             }
             catch (Exception ex)
             {
@@ -66,6 +73,38 @@ internal static class CompileServer
         };
     }
 
+    /// <summary>
+    /// 导出 EXE：照教材工程编译成 .NET Framework 程序，嵌入 libs 目录下的教材 dll，成功时写到工程目录的 ExportFile；
+    /// 导出工程（project）：照机房的 VS 2012 检查后打包成 VS 工程，成功时写到 ExportProjectFile。
+    /// name 是程序集名（exe 的名字、工程名），由服务器按工程取好。
+    /// </summary>
+    private static JsonObject Export(string dir, bool project, string libs, string name)
+    {
+        var watch = Stopwatch.StartNew();
+        if (string.IsNullOrWhiteSpace(name)) name = "上位机程序";
+        bool ok;
+        JsonArray diagnostics;
+        if (project)
+        {
+            var result = ProjectExporter.Export(dir, libs, Sim.Host.ProjectResources.Directory, name);
+            if (result.Success) File.WriteAllBytes(Path.Combine(dir, ExportProjectFile), result.Zip);
+            (ok, diagnostics) = (result.Success, result.Diagnostics);
+        }
+        else
+        {
+            var result = ExeExporter.Export(dir, libs, Sim.Host.ProjectResources.Directory, name);
+            if (result.Success) File.WriteAllBytes(Path.Combine(dir, ExportFile), result.Exe);
+            (ok, diagnostics) = (result.Success, result.Diagnostics);
+        }
+        return new JsonObject
+        {
+            ["type"] = "compiled",
+            ["ok"] = ok,
+            ["diagnostics"] = diagnostics,
+            ["ms"] = watch.ElapsedMilliseconds,
+        };
+    }
+
     /// <summary>启动时编译一个小程序，让 Roslyn 完成加载和 JIT，学生第一次点"运行"时就不用等</summary>
     private static void WarmUp()
     {

runtime/Sim.Runner/ConsoleForwarder.cs

@@ -7,6 +7,9 @@ namespace Sim.Runner;
 /// <summary>把学生程序的 Console 输出按行转发给浏览器（标准输出本身留给协议消息使用）</summary>
 internal sealed class ConsoleForwarder : TextWriter
 {
+    /// <summary>一直不换行的输出（如教材的 while (true) Console.Write("A")）攒到这么多字符就先发出去</summary>
+    private const int MaxBuffered = 4096;
+
     private readonly StringBuilder _buffer = new();
 
     public override Encoding Encoding => Encoding.UTF8;
@@ -16,7 +19,7 @@ internal sealed class ConsoleForwarder : TextWriter
         lock (_buffer)
         {
             _buffer.Append(value);
-            if (value == '\n') FlushBuffer();
+            if (value == '\n' || _buffer.Length >= MaxBuffered) FlushBuffer();
         }
     }
 
@@ -26,7 +29,7 @@ internal sealed class ConsoleForwarder : TextWriter
         lock (_buffer)
         {
             _buffer.Append(value);
-            if (value.Contains('\n')) FlushBuffer();
+            if (value.Contains('\n') || _buffer.Length >= MaxBuffered) FlushBuffer();
         }
     }
 

runtime/Sim.Runner/ExeExporter.cs

@@ -0,0 +1,313 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Emit;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 导出 EXE：把学生工程照教材工程的样子（.NET Framework 4.5 窗体应用，引用真机版设备类库）编译成一个 exe，
+/// 在机房的 Windows 上双击就能运行，控制真的实训台。
+/// <list type="bullet">
+/// <item>编译的是学生写的原始代码：平台为仿真做的改写（虚拟时钟、旧线程 API、Windows 路径）和 API 限制都不用，和在 VS 里编译一样。</item>
+/// <item>教材 dll（设备类库、设备控件库、媒体播放器的 Interop）嵌进 exe，启动时由模块初始化器从 exe 里加载，学生的 Program.cs 不用改。</item>
+/// <item>Properties.Resources 的图片、声音嵌进 exe；代码里按文件名用到的素材（如 Resources\ring.mp3）启动时放到 exe 旁边的 Resources 文件夹，和 VS 输出目录一样。</item>
+/// </list>
+/// </summary>
+internal static class ExeExporter
+{
+    public sealed record Result(bool Success, byte[] Exe, JsonArray Diagnostics);
+
+    private const string LibPrefix = "IotSimExport.lib.";
+    private const string FilePrefix = "IotSimExport.file.";
+    private const string MediaPrefix = "IotSimExport.media.";
+
+    /// <summary>
+    /// VS 设计器给媒体播放器存的 OcxState（AxHost.State 的 BinaryFormatter 序列化数据，取自教材项目 7 的 Form1.resx，是控件的默认状态）。
+    /// 平台没有 .resx，导出时给每个 resources.GetObject("…OcxState") 都放这一份。
+    /// </summary>
+    internal const string MediaPlayerOcxState =
+        "AAEAAAD/////AQAAAAAAAAAMAgAAAFdTeXN0ZW0uV2luZG93cy5Gb3JtcywgVmVyc2lvbj00LjAuMC4w" +
+        "LCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODkFAQAAACFTeXN0" +
+        "ZW0uV2luZG93cy5Gb3Jtcy5BeEhvc3QrU3RhdGUBAAAABERhdGEHAgIAAAAJAwAAAA8DAAAAtwAAAAIB" +
+        "AAAAAQAAAAAAAAAAAAAAAKIAAAAAAwAACAAAAAAABQAAAAAAAADwPwMAAAAAAAUAAAAAAAAAAAAIAAIA" +
+        "AAAAAAMAAQAAAAsA//8DAAAAAAALAP//CAACAAAAAAADADIAAAALAAAACAAKAAAAZgB1AGwAbAAAAAsA" +
+        "AAALAAAACwD//wsA//8LAAAACAACAAAAAAAIAAIAAAAAAAgAAgAAAAAACAACAAAAAAALAAAANAYAAOcB" +
+        "AAAL";
+
+    private const string AxHostStateType =
+        "System.Windows.Forms.AxHost+State, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
+
+    /// <summary>平台生成的 Properties/Resources.Designer.cs 从素材库取图片，导出时改成从 exe 里取</summary>
+    private const string PlatformResources = "global::Sim.Host.ProjectResources.";
+    private const string EmbeddedResources = "global::IotSimExport.EmbeddedFiles.";
+
+    private static readonly Regex ResourceFile = new(@"ProjectResources\.(?:Image|Bytes)\(""([^""]+)""\)");
+    internal static readonly Regex OcxStateKey = new(@"GetObject\(""([^""]+\.OcxState)""\)");
+
+    internal static readonly CSharpCompilationOptions Options = new CSharpCompilationOptions(OutputKind.WindowsApplication)
+        .WithPlatform(Platform.AnyCpu32BitPreferred)
+        .WithOptimizationLevel(OptimizationLevel.Release)
+        .WithNullableContextOptions(NullableContextOptions.Disable)
+        .WithAllowUnsafe(false)
+        .WithConcurrentBuild(true);
+
+    /// <summary>.NET Framework 4.5 的引用程序集（构建时复制到 netfx/，见 Sim.Runner.csproj）</summary>
+    internal static readonly Lazy<IReadOnlyList<MetadataReference>> Framework = new(() =>
+        Directory.EnumerateFiles(Path.Combine(AppContext.BaseDirectory, "netfx"), "*.dll")
+            .Select(path => (MetadataReference)MetadataReference.CreateFromFile(path))
+            .ToList());
+
+    /// <summary>libsDir：教材 dll 所在目录；galleryDir：平台素材库</summary>
+    public static Result Export(string projectDir, string libsDir, string galleryDir, string assemblyName)
+    {
+        var libs = TextbookLibs(libsDir, "导出 EXE");
+
+        var sources = StudentCompiler.SourceFiles(projectDir)
+            .Select(path => (Path: Path.GetRelativePath(projectDir, path), Text: File.ReadAllText(path)))
+            .ToList();
+
+        // 平台生成的资源类改成从 exe 里取，用到的素材文件嵌进去
+        var files = new SortedSet<string>(StringComparer.Ordinal);
+        for (var i = 0; i < sources.Count; i++)
+        {
+            if (!sources[i].Text.Contains(PlatformResources)) continue;
+            foreach (Match m in ResourceFile.Matches(sources[i].Text)) files.Add(Path.GetFileName(m.Groups[1].Value));
+            sources[i] = (sources[i].Path, sources[i].Text.Replace(PlatformResources, EmbeddedResources));
+        }
+        // 代码里按文件名用到的素材（如 BaseDirectory + "//Resources//ring.mp3"），在 VS 里是复制到输出目录的 Resources 文件夹
+        var media = ReferencedMedia(galleryDir, sources.Select(s => s.Text));
+
+        var trees = sources
+            .Select(s => CSharpSyntaxTree.ParseText(SourceText.From(s.Text, Encoding.UTF8), StudentCompiler.ParseOptions, path: s.Path))
+            .Append(CSharpSyntaxTree.ParseText(SourceText.From(Bootstrap(media), Encoding.UTF8), StudentCompiler.ParseOptions, path: "IotSimExport.cs"))
+            .ToList();
+        var references = Framework.Value.Concat(libs.Select(p => (MetadataReference)MetadataReference.CreateFromFile(p))).ToList();
+        var compilation = CSharpCompilation.Create(assemblyName, trees, references, Options);
+
+        var resources = new List<ResourceDescription>();
+        foreach (var lib in libs)
+        {
+            var path = lib;
+            resources.Add(new ResourceDescription(LibPrefix + Path.GetFileName(path), () => File.OpenRead(path), isPublic: false));
+        }
+        foreach (var file in files)
+        {
+            var path = Path.Combine(galleryDir, file);
+            if (File.Exists(path)) resources.Add(new ResourceDescription(FilePrefix + file, () => File.OpenRead(path), isPublic: false));
+        }
+        foreach (var file in media)
+        {
+            var path = Path.Combine(galleryDir, file);
+            resources.Add(new ResourceDescription(MediaPrefix + file, () => File.OpenRead(path), isPublic: false));
+        }
+        resources.AddRange(ControlResources(compilation, sources.SelectMany(s => OcxStateKey.Matches(s.Text).Select(m => m.Groups[1].Value)).ToHashSet()));
+
+        using var pe = new MemoryStream();
+        using var win32 = compilation.CreateDefaultWin32Resources(versionResource: true, noManifest: false, manifestContents: null, iconInIcoFormat: null);
+        var emit = compilation.Emit(pe, win32Resources: win32, manifestResources: resources,
+            options: new EmitOptions(debugInformationFormat: DebugInformationFormat.Embedded));
+
+        var diagnostics = new JsonArray();
+        // 和平台运行时一样按编译器给出的顺序：语法错误在前，真正的出错原因一般是第一条
+        foreach (var diagnostic in emit.Diagnostics.Where(d => d.Severity == DiagnosticSeverity.Error))
+        {
+            diagnostics.Add(StudentCompiler.ToJson(diagnostic));
+        }
+        return new Result(emit.Success, pe.ToArray(), diagnostics);
+    }
+
+    /// <summary>代码里按文件名用到的素材库文件（如 BaseDirectory + "//Resources//ring.mp3"），按文件名排序</summary>
+    internal static List<string> ReferencedMedia(string galleryDir, IEnumerable<string> texts)
+    {
+        if (!Directory.Exists(galleryDir)) return new List<string>();
+        var all = texts.ToList();
+        return Directory.GetFiles(galleryDir)
+            .Select(Path.GetFileName)
+            .OfType<string>()
+            .Where(name => !name.Contains(".2x.") && name != "index.json")
+            .Where(name => all.Any(text => text.Contains(name + "\"")))
+            .OrderBy(name => name, StringComparer.Ordinal)
+            .ToList();
+    }
+
+    /// <summary>
+    /// 教材 dll 的路径；没放时说明原因（what："导出 EXE"或"导出工程"）。目录或文件读不了时
+    /// （服务器上拷进去的文件权限是 600，容器里的平台用户读不到）也说明原因，不把英文的系统报错直接给学生看。
+    /// </summary>
+    internal static string[] TextbookLibs(string libsDir, string what)
+    {
+        var libs = ReadableLibs(libsDir, what);
+        if (!libs.Any(p => Path.GetFileName(p) == "DeviceCtrlLibrary.dll"))
+            throw new InvalidOperationException($"服务器上没有放教材的设备类库（真机版 DeviceCtrlLibrary.dll 等），不能{what}，请联系老师");
+        return libs;
+    }
+
+    private static string[] ReadableLibs(string libsDir, string what)
+    {
+        if (!Directory.Exists(libsDir)) return Array.Empty<string>();
+        string? current = null;
+        try
+        {
+            var libs = Directory.GetFiles(libsDir, "*.dll").OrderBy(p => p, StringComparer.Ordinal).ToArray();
+            foreach (var lib in libs)
+            {
+                current = lib;
+                using var _ = File.OpenRead(lib);
+            }
+            return libs;
+        }
+        catch (UnauthorizedAccessException)
+        {
+            var item = current == null ? "目录" : Path.GetFileName(current);
+            throw new InvalidOperationException(
+                $"服务器上的教材设备类库读不了（{item} 的权限不够），不能{what}，请联系老师（服务器上执行 chmod 755 textbook-libs 和 chmod 644 textbook-libs/*.dll）");
+        }
+    }
+
+    /// <summary>
+    /// 每个窗体、控件类的 .resources：VS 生成的 Designer.cs 用 ComponentResourceManager 读窗体的 .resx，
+    /// 平台没有 .resx。媒体播放器的 OcxState 放默认状态，其他取到 null（和运行时一样）。
+    /// </summary>
+    private static List<ResourceDescription> ControlResources(CSharpCompilation compilation, HashSet<string> ocxKeys)
+    {
+        var stream = new MemoryStream();
+        using (var writer = new System.Resources.ResourceWriter(stream))
+        {
+            var state = Convert.FromBase64String(MediaPlayerOcxState);
+            foreach (var key in ocxKeys.OrderBy(k => k, StringComparer.Ordinal)) writer.AddResourceData(key, AxHostStateType, state);
+            writer.Generate();
+        }
+        var data = stream.ToArray();
+
+        var control = compilation.GetTypeByMetadataName("System.Windows.Forms.Control");
+        var resources = new List<ResourceDescription>();
+        if (control == null) return resources;
+        var names = new HashSet<string>();
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            foreach (var declaration in tree.GetRoot().DescendantNodes().OfType<ClassDeclarationSyntax>())
+            {
+                if (model.GetDeclaredSymbol(declaration) is not { } type) continue;
+                var derives = false;
+                for (var t = type.BaseType; t != null && !derives; t = t.BaseType) derives = SymbolEqualityComparer.Default.Equals(t, control);
+                var name = type.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat).Replace("global::", "") + ".resources";
+                if (derives && names.Add(name)) resources.Add(new ResourceDescription(name, () => new MemoryStream(data), isPublic: true));
+            }
+        }
+        return resources;
+    }
+
+    /// <summary>
+    /// 加进 exe 的启动代码：模块初始化器在 Main 之前运行（.NET Framework 也支持），
+    /// 注册 AssemblyResolve，用到教材 dll 时从 exe 里加载；把代码里用到的素材文件放到 exe 旁边。
+    /// </summary>
+    private static string Bootstrap(IReadOnlyList<string> media) => $$"""
+        [assembly: global::System.Runtime.Versioning.TargetFramework(".NETFramework,Version=v4.5", FrameworkDisplayName = ".NET Framework 4.5")]
+
+        namespace System.Runtime.CompilerServices
+        {
+            [global::System.AttributeUsage(global::System.AttributeTargets.Method, Inherited = false)]
+            internal sealed class ModuleInitializerAttribute : global::System.Attribute { }
+        }
+
+        /// <summary>
+        /// 书上项目 2 任务 3 调用 DeviceCtrlHelper.ledHelper.Close()，教材的类库里没有这个方法（LED 屏每次发送才用串口，不占着），
+        /// 平台补上了它；导出时也补一个，书上的代码照样能编译。放在全局命名空间，不用 using 就能找到；类库自己有 Close 时用类库的。
+        /// </summary>
+        internal static class IotSimExportLedCompat
+        {
+            internal static void Close(this global::DeviceCtrlLibrary.LEDHelper helper) { }
+        }
+
+        namespace IotSimExport
+        {
+            using System;
+            using System.Collections.Generic;
+            using System.IO;
+            using System.Reflection;
+
+            internal static class Bootstrap
+            {
+                private static readonly Dictionary<string, Assembly> Loaded = new Dictionary<string, Assembly>(StringComparer.OrdinalIgnoreCase);
+
+                [global::System.Runtime.CompilerServices.ModuleInitializer]
+                internal static void Init()
+                {
+                    AppDomain.CurrentDomain.AssemblyResolve += Resolve;
+                    ExtractMedia();
+                }
+
+                private static Assembly Resolve(object sender, ResolveEventArgs args)
+                {
+                    var name = new AssemblyName(args.Name).Name;
+                    lock (Loaded)
+                    {
+                        Assembly assembly;
+                        if (Loaded.TryGetValue(name, out assembly)) return assembly;
+                        var bytes = EmbeddedFiles.Read("{{LibPrefix}}" + name + ".dll");
+                        if (bytes == null) return null;
+                        assembly = Assembly.Load(bytes);
+                        Loaded[name] = assembly;
+                        return assembly;
+                    }
+                }
+
+                private static readonly string[] Media = { {{string.Join(", ", media.Select(m => SymbolDisplay.FormatLiteral(m, true)))}} };
+
+                private static void ExtractMedia()
+                {
+                    foreach (var file in Media)
+                    {
+                        try
+                        {
+                            var dir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Resources");
+                            var path = Path.Combine(dir, file);
+                            if (File.Exists(path)) continue;
+                            Directory.CreateDirectory(dir);
+                            File.WriteAllBytes(path, EmbeddedFiles.Read("{{MediaPrefix}}" + file));
+                        }
+                        catch (Exception)
+                        {
+                            // 文件夹不能写（如放在只读的 U 盘上）时不影响程序运行，只是用不到这个文件
+                        }
+                    }
+                }
+            }
+
+            internal static class EmbeddedFiles
+            {
+                internal static byte[] Read(string name)
+                {
+                    using (var stream = typeof(EmbeddedFiles).Assembly.GetManifestResourceStream(name))
+                    {
+                        if (stream == null) return null;
+                        var bytes = new byte[stream.Length];
+                        var read = 0;
+                        while (read < bytes.Length) read += stream.Read(bytes, read, bytes.Length - read);
+                        return bytes;
+                    }
+                }
+
+                internal static global::System.Drawing.Bitmap Image(string file)
+                {
+                    return new global::System.Drawing.Bitmap(new MemoryStream(Bytes(file)));
+                }
+
+                internal static byte[] Bytes(string file)
+                {
+                    return Read("{{FilePrefix}}" + Path.GetFileName(file));
+                }
+            }
+        }
+        """;
+}

runtime/Sim.Runner/LanguageServer.cs

@@ -0,0 +1,340 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.Encodings.Web;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Completion;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Host.Mef;
+using Microsoft.CodeAnalysis.QuickInfo;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 常驻语言服务：给浏览器里的代码编辑器提供代码补全、悬停提示、参数提示和边写边检查的编译错误。
+/// 和 VS 的 IntelliSense 用同一套 Roslyn 引擎。从标准输入读取 {"id":…,"type":…,"session":…,"files":[…],"file":…,"line":…,"column":…}，
+/// 回复 {"id":…,…}。请求并行处理（同一个会话内按顺序），学生在不同标签页里互不等待。
+/// 每个浏览器标签页一个会话，保存一份工程；请求带上全部文件，只更新有变化的文件，Roslyn 能复用没变的部分。
+/// 和编译服务分开成两个进程：编译不会被补全请求拖慢，反之亦然。
+/// </summary>
+internal static class LanguageServer
+{
+    private static readonly JsonSerializerOptions JsonOptions = new() { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping };
+    private static readonly object OutputLock = new();
+    private static readonly ConcurrentDictionary<string, Session> Sessions = new();
+    private const int MaxSessions = 300;
+    private const int MaxCompletionItems = 2000;
+
+    public static int Run()
+    {
+        using var input = new StreamReader(Console.OpenStandardInput(), new UTF8Encoding(false));
+        var output = new StreamWriter(Console.OpenStandardOutput(), new UTF8Encoding(false)) { AutoFlush = true };
+
+        WarmUp();
+        Write(output, new JsonObject { ["type"] = "ready" });
+
+        while (input.ReadLine() is { } line)
+        {
+            _ = Task.Run(() => HandleAsync(line, output));
+        }
+        return 0;
+    }
+
+    private static void Write(StreamWriter output, JsonObject message)
+    {
+        var text = message.ToJsonString(JsonOptions);
+        lock (OutputLock) output.WriteLine(text);
+    }
+
+    private static async Task HandleAsync(string line, StreamWriter output)
+    {
+        JsonNode? id = null;
+        JsonObject reply;
+        try
+        {
+            var request = JsonNode.Parse(line)!.AsObject();
+            id = request["id"]?.DeepClone();
+            reply = await DispatchAsync(request);
+        }
+        catch (Exception ex)
+        {
+            reply = new JsonObject { ["type"] = "error", ["message"] = ex.Message };
+        }
+        reply["id"] = id;
+        Write(output, reply);
+    }
+
+    private static async Task<JsonObject> DispatchAsync(JsonObject request)
+    {
+        var session = GetSession((string?)request["session"] ?? "default");
+        await session.Lock.WaitAsync();
+        try
+        {
+            session.LastUsed = DateTime.UtcNow;
+            if (request["files"] is JsonArray files) session.Update(files);
+            var type = (string?)request["type"];
+            if (type == "diagnostics") return await DiagnosticsAsync(session);
+            if (type == "completionDetail") return await CompletionDetailAsync(session, (int?)request["index"] ?? -1);
+
+            var document = session.Document((string?)request["file"] ?? "");
+            if (document == null) return new JsonObject { ["type"] = "empty" };
+            var text = await document.GetTextAsync();
+            var line = Math.Clamp(((int?)request["line"] ?? 1) - 1, 0, text.Lines.Count - 1);
+            var column = Math.Clamp(((int?)request["column"] ?? 1) - 1, 0, text.Lines[line].End - text.Lines[line].Start);
+            var position = text.Lines.GetPosition(new LinePosition(line, column));
+            return type switch
+            {
+                "complete" => await CompleteAsync(session, document, text, position),
+                "hover" => await HoverAsync(document, text, position),
+                "signature" => await SignatureAsync(document, position),
+                _ => new JsonObject { ["type"] = "error", ["message"] = $"不认识的请求 {type}" },
+            };
+        }
+        finally
+        {
+            session.Lock.Release();
+        }
+    }
+
+    private static Session GetSession(string id)
+    {
+        if (Sessions.TryGetValue(id, out var existing)) return existing;
+        // 会话太多时丢掉最久没用的（浏览器关了也不会通知这里）
+        if (Sessions.Count >= MaxSessions)
+        {
+            foreach (var old in Sessions.OrderBy(s => s.Value.LastUsed).Take(Sessions.Count - MaxSessions + 1)) Sessions.TryRemove(old.Key, out _);
+        }
+        return Sessions.GetOrAdd(id, _ => new Session());
+    }
+
+    // ---------- 代码补全 ----------
+
+    private static async Task<JsonObject> CompleteAsync(Session session, Document document, SourceText text, int position)
+    {
+        var service = CompletionService.GetService(document)!;
+        var list = await service.GetCompletionsAsync(document, position);
+        session.LastCompletion = (document, list);
+        var items = new JsonArray();
+        foreach (var item in list.ItemsList.Take(MaxCompletionItems))
+        {
+            items.Add(new JsonObject
+            {
+                ["label"] = item.DisplayTextPrefix + item.DisplayText + item.DisplayTextSuffix,
+                ["insert"] = item.DisplayText,
+                ["filter"] = item.FilterText,
+                ["sort"] = item.SortText,
+                ["kind"] = item.Tags.FirstOrDefault() ?? "",
+                ["detail"] = item.InlineDescription,
+            });
+        }
+        return new JsonObject { ["type"] = "completions", ["range"] = Range(text, list.Span), ["items"] = items };
+    }
+
+    /// <summary>补全列表里选中某一项时，取它的说明（签名和文档）</summary>
+    private static async Task<JsonObject> CompletionDetailAsync(Session session, int index)
+    {
+        if (session.LastCompletion is not var (document, list) || index < 0 || index >= list.ItemsList.Count)
+        {
+            return new JsonObject { ["type"] = "detail", ["text"] = null };
+        }
+        var description = await CompletionService.GetService(document)!.GetDescriptionAsync(document, list.ItemsList[index]);
+        return new JsonObject { ["type"] = "detail", ["text"] = WithoutNullable(description?.Text) };
+    }
+
+    // ---------- 悬停提示 ----------
+
+    private static async Task<JsonObject> HoverAsync(Document document, SourceText text, int position)
+    {
+        var info = await QuickInfoService.GetService(document)!.GetQuickInfoAsync(document, position);
+        if (info == null) return new JsonObject { ["type"] = "hover", ["text"] = null };
+        var sections = info.Sections.Select(s => s.Text).Where(t => !string.IsNullOrWhiteSpace(t));
+        return new JsonObject { ["type"] = "hover", ["text"] = WithoutNullable(string.Join("\n\n", sections)), ["range"] = Range(text, info.Span) };
+    }
+
+    // ---------- 参数提示 ----------
+
+    /// <summary>不显示可空注解：仿真类库开启了可空检查，学生代码没有开，VS 里看到的也是 string 而不是 string?</summary>
+    private static readonly SymbolDisplayFormat TypeFormat = SymbolDisplayFormat.MinimallyQualifiedFormat
+        .RemoveMiscellaneousOptions(SymbolDisplayMiscellaneousOptions.IncludeNullableReferenceTypeModifier);
+
+    /// <summary>Roslyn 生成的说明文字里去掉可空注解（如 string? → string）</summary>
+    private static string? WithoutNullable(string? text) =>
+        text == null ? null : Regex.Replace(text, @"(?<=[\w>\]])\?(?=[\s,)\]>]|$)", "");
+
+    /// <summary>光标在方法调用或 new 的括号里时，列出各个重载，标出正在填的是第几个参数</summary>
+    private static async Task<JsonObject> SignatureAsync(Document document, int position)
+    {
+        var empty = new JsonObject { ["type"] = "signature", ["signatures"] = new JsonArray() };
+        var root = await document.GetSyntaxRootAsync();
+        var model = await document.GetSemanticModelAsync();
+        if (root == null || model == null) return empty;
+
+        var argumentList = root.FindToken(Math.Max(position - 1, 0)).Parent?
+            .AncestorsAndSelf()
+            .OfType<ArgumentListSyntax>()
+            .FirstOrDefault(a => position > a.OpenParenToken.SpanStart && (a.CloseParenToken.IsMissing || position <= a.CloseParenToken.SpanStart));
+        if (argumentList == null) return empty;
+
+        IEnumerable<IMethodSymbol> methods;
+        ISymbol? chosen;
+        switch (argumentList.Parent)
+        {
+            case InvocationExpressionSyntax invocation:
+                methods = model.GetMemberGroup(invocation.Expression).OfType<IMethodSymbol>();
+                chosen = model.GetSymbolInfo(invocation).Symbol;
+                break;
+            case BaseObjectCreationExpressionSyntax creation when model.GetTypeInfo(creation).Type is INamedTypeSymbol type:
+                methods = type.InstanceConstructors.Where(c => c.DeclaredAccessibility == Accessibility.Public);
+                chosen = model.GetSymbolInfo(creation).Symbol;
+                break;
+            default:
+                return empty;
+        }
+
+        var activeParameter = argumentList.Arguments.GetSeparators().Count(comma => comma.SpanStart < position);
+        var signatures = new JsonArray();
+        var list = methods.ToList();
+        foreach (var method in list)
+        {
+            var label = new StringBuilder(method.MethodKind == MethodKind.Constructor ? method.ContainingType.Name : method.Name).Append('(');
+            var parameters = new JsonArray();
+            foreach (var p in method.Parameters)
+            {
+                if (p.Ordinal > 0) label.Append(", ");
+                var start = label.Length;
+                label.Append(p.Type.ToDisplayString(TypeFormat)).Append(' ').Append(p.Name);
+                parameters.Add(new JsonArray(start, label.Length));
+            }
+            label.Append(')');
+            if (method.MethodKind != MethodKind.Constructor) label.Insert(0, method.ReturnType.ToDisplayString(TypeFormat) + " ");
+            // 返回类型插在前面，参数位置要跟着后移
+            var offset = method.MethodKind != MethodKind.Constructor ? method.ReturnType.ToDisplayString(TypeFormat).Length + 1 : 0;
+            foreach (var range in parameters.OfType<JsonArray>())
+            {
+                range[0] = (int)range[0]! + offset;
+                range[1] = (int)range[1]! + offset;
+            }
+            signatures.Add(new JsonObject { ["label"] = label.ToString(), ["parameters"] = parameters });
+        }
+        // 已经能确定是哪个重载时选它，否则选参数够多的第一个
+        var active = list.FindIndex(m => SymbolEqualityComparer.Default.Equals(m, chosen));
+        if (active < 0) active = Math.Max(list.FindIndex(m => m.Parameters.Length > activeParameter), 0);
+        return new JsonObject { ["type"] = "signature", ["signatures"] = signatures, ["activeSignature"] = active, ["activeParameter"] = activeParameter };
+    }
+
+    // ---------- 边写边检查 ----------
+
+    /// <summary>整个工程的编译错误和警告（不生成程序集），提示和真正编译时一样</summary>
+    private static async Task<JsonObject> DiagnosticsAsync(Session session)
+    {
+        var project = session.Workspace.CurrentSolution.GetProject(session.ProjectId)!;
+        var compilation = (CSharpCompilation)(await project.GetCompilationAsync())!;
+        var diagnostics = new JsonArray();
+        foreach (var diagnostic in compilation.GetDiagnostics()
+                     .Concat(ApiPolicy.Check(compilation))
+                     .Where(d => d.Severity is DiagnosticSeverity.Error or DiagnosticSeverity.Warning && d.Location.IsInSource)
+                     .Where(d => !LegacyThreadRewriter.IsSupportedObsoleteWarning(d))
+                     .OrderBy(d => d.Severity == DiagnosticSeverity.Error ? 0 : 1))
+        {
+            diagnostics.Add(StudentCompiler.ToJson(diagnostic));
+        }
+        return new JsonObject { ["type"] = "diagnostics", ["diagnostics"] = diagnostics };
+    }
+
+    private static JsonObject Range(SourceText text, TextSpan span)
+    {
+        var lines = text.Lines.GetLinePositionSpan(span);
+        return new JsonObject
+        {
+            ["startLine"] = lines.Start.Line + 1,
+            ["startColumn"] = lines.Start.Character + 1,
+            ["endLine"] = lines.End.Line + 1,
+            ["endColumn"] = lines.End.Character + 1,
+        };
+    }
+
+    /// <summary>启动时做一遍补全和检查，让 MEF 组合和 JIT 提前完成，学生第一次按"."时不用等几秒</summary>
+    private static void WarmUp()
+    {
+        var session = new Session();
+        session.Update(new JsonArray(new JsonObject
+        {
+            ["path"] = "Program.cs",
+            ["content"] = "using System.Windows.Forms; static class P { static void Main() { var f = new Form(); f.Text = \"预热\"; MessageBox.Show(\"\"); } }",
+        }));
+        var document = session.Document("Program.cs")!;
+        var text = document.GetTextAsync().Result;
+        var position = text.ToString().IndexOf("f.Text", StringComparison.Ordinal) + 2;
+        CompleteAsync(session, document, text, position).Wait();
+        HoverAsync(document, text, position).Wait();
+        SignatureAsync(document, text.ToString().IndexOf("Show(", StringComparison.Ordinal) + 5).Wait();
+        DiagnosticsAsync(session).Wait();
+    }
+
+    /// <summary>一个浏览器标签页的工程</summary>
+    private sealed class Session
+    {
+        public readonly AdhocWorkspace Workspace = new(MefHostServices.DefaultHost);
+        public readonly ProjectId ProjectId = ProjectId.CreateNewId();
+        public readonly SemaphoreSlim Lock = new(1, 1);
+        public DateTime LastUsed = DateTime.UtcNow;
+        /// <summary>最近一次补全的结果，选中某项时据此取说明</summary>
+        public (Document, CompletionList)? LastCompletion;
+        private readonly Dictionary<string, (DocumentId Id, string Content)> documents = new();
+
+        public Session()
+        {
+            Workspace.AddProject(ProjectInfo.Create(
+                ProjectId, VersionStamp.Create(), "StudentApp", "StudentApp", LanguageNames.CSharp,
+                compilationOptions: StudentCompiler.CompilationOptions,
+                parseOptions: StudentCompiler.ParseOptions,
+                metadataReferences: StudentCompiler.References.Value));
+        }
+
+        /// <summary>同步浏览器里的文件：只更新有变化的，删掉已经没有的</summary>
+        public void Update(JsonArray files)
+        {
+            var solution = Workspace.CurrentSolution;
+            var seen = new HashSet<string>();
+            foreach (var file in files.OfType<JsonObject>())
+            {
+                var path = (string?)file["path"];
+                var content = (string?)file["content"] ?? "";
+                if (path == null || !path.EndsWith(".cs", StringComparison.Ordinal)) continue;
+                seen.Add(path);
+                if (documents.TryGetValue(path, out var doc))
+                {
+                    if (doc.Content == content) continue;
+                    solution = solution.WithDocumentText(doc.Id, SourceText.From(content));
+                    documents[path] = (doc.Id, content);
+                }
+                else
+                {
+                    var id = DocumentId.CreateNewId(ProjectId);
+                    solution = solution.AddDocument(id, path, SourceText.From(content), filePath: path);
+                    documents[path] = (id, content);
+                }
+            }
+            foreach (var path in documents.Keys.Where(p => !seen.Contains(p)).ToList())
+            {
+                solution = solution.RemoveDocument(documents[path].Id);
+                documents.Remove(path);
+            }
+            Workspace.TryApplyChanges(solution);
+        }
+
+        public Document? Document(string path) =>
+            documents.TryGetValue(path, out var doc) ? Workspace.CurrentSolution.GetDocument(doc.Id) : null;
+    }
+}

runtime/Sim.Runner/LegacyThreadRewriter.cs

@@ -0,0 +1,121 @@
+using System.Text;
+using System.Text.RegularExpressions;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 编译前改写学生代码里的旧版线程 API，让教材项目 5 的 Suspend / Resume / Abort 能在新版 .NET 上运行：
+/// <code>
+/// new Thread(GetData)          → new Thread(LegacyThreads.Wrap(new ThreadStart(GetData)))
+/// thd.Suspend() / Resume() / Abort()  → LegacyThreads.Suspend(thd) …
+/// thd.ThreadState              → LegacyThreads.GetThreadState(thd)
+/// Thread.Sleep(2000)           → LegacyThreads.Sleep(2000)
+/// </code>
+/// 只改写语义上确实是 System.Threading.Thread 成员的调用；改写不换行，报错和异常堆栈里的行号不变。
+/// 学生在编辑器里看到的仍是原来的代码。
+/// </summary>
+internal static class LegacyThreadRewriter
+{
+    private const string Target = "global::Sim.Host.LegacyThreads";
+
+    /// <summary>改写整个编译；没有需要改写的地方时原样返回</summary>
+    public static CSharpCompilation Rewrite(CSharpCompilation compilation)
+    {
+        var result = compilation;
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            // 用到线程的文件一定会出现 Thread 这个词，其他文件不用做语义分析
+            if (!tree.GetText().ToString().Contains("Thread")) continue;
+            var rewriter = new Rewriter(compilation.GetSemanticModel(tree));
+            var root = rewriter.Visit(tree.GetRoot());
+            if (!rewriter.Changed) continue;
+            var text = SourceText.From(root.ToFullString(), Encoding.UTF8);
+            result = result.ReplaceSyntaxTree(tree, CSharpSyntaxTree.ParseText(text, (CSharpParseOptions)tree.Options, tree.FilePath));
+        }
+        return result;
+    }
+
+    /// <summary>平台支持的过时线程 API 不再提示"已过时"（边写边检查时用）</summary>
+    public static bool IsSupportedObsoleteWarning(Diagnostic diagnostic)
+    {
+        if (diagnostic.Id is not ("CS0618" or "SYSLIB0006")) return false;
+        // 警告标在整个调用上，如 thd.Suspend()
+        var source = diagnostic.Location.SourceTree?.GetText().ToString(diagnostic.Location.SourceSpan) ?? "";
+        return Regex.IsMatch(source, @"\b(Suspend|Resume|Abort)\b");
+    }
+
+    private static bool IsThread(ITypeSymbol? type) =>
+        type is { Name: "Thread", ContainingNamespace: { Name: "Threading", ContainingNamespace: { Name: "System", ContainingNamespace.IsGlobalNamespace: true } } };
+
+    private sealed class Rewriter(SemanticModel model) : CSharpSyntaxRewriter
+    {
+        public bool Changed { get; private set; }
+
+        public override SyntaxNode? VisitInvocationExpression(InvocationExpressionSyntax node)
+        {
+            var method = model.GetSymbolInfo(node).Symbol as IMethodSymbol;
+            var visited = (InvocationExpressionSyntax)base.VisitInvocationExpression(node)!;
+            if (method == null || !IsThread(method.ContainingType)) return visited;
+
+            switch (method.Name)
+            {
+                case "Suspend" or "Resume" or "Abort" when !method.IsStatic && visited.Expression is MemberAccessExpressionSyntax access:
+                    // thd.Abort(x) → LegacyThreads.Abort(thd, x)
+                    var arguments = visited.ArgumentList.Arguments.Insert(0, SyntaxFactory.Argument(access.Expression.WithoutTrivia()));
+                    Changed = true;
+                    return SyntaxFactory.InvocationExpression(Member(method.Name), SyntaxFactory.ArgumentList(arguments))
+                        .WithTriviaFrom(visited);
+                case "Sleep" when method.IsStatic:
+                    Changed = true;
+                    return visited.WithExpression(Member("Sleep").WithTriviaFrom(visited.Expression));
+                default:
+                    return visited;
+            }
+        }
+
+        public override SyntaxNode? VisitMemberAccessExpression(MemberAccessExpressionSyntax node)
+        {
+            var symbol = model.GetSymbolInfo(node).Symbol;
+            var visited = (MemberAccessExpressionSyntax)base.VisitMemberAccessExpression(node)!;
+            if (symbol is not IPropertySymbol { Name: "ThreadState", IsStatic: false } property || !IsThread(property.ContainingType)) return visited;
+            Changed = true;
+            return SyntaxFactory.InvocationExpression(
+                    Member("GetThreadState"),
+                    SyntaxFactory.ArgumentList(SyntaxFactory.SingletonSeparatedList(SyntaxFactory.Argument(visited.Expression.WithoutTrivia()))))
+                .WithTriviaFrom(visited);
+        }
+
+        public override SyntaxNode? VisitObjectCreationExpression(ObjectCreationExpressionSyntax node) =>
+            WrapThreadStart(node, base.VisitObjectCreationExpression(node));
+
+        public override SyntaxNode? VisitImplicitObjectCreationExpression(ImplicitObjectCreationExpressionSyntax node) =>
+            WrapThreadStart(node, base.VisitImplicitObjectCreationExpression(node));
+
+        /// <summary>new Thread(start) 的第一个参数包一层 LegacyThreads.Wrap，线程被 Abort 时安静地结束</summary>
+        private SyntaxNode? WrapThreadStart(BaseObjectCreationExpressionSyntax original, SyntaxNode? visitedNode)
+        {
+            if (visitedNode is not BaseObjectCreationExpressionSyntax visited
+                || model.GetSymbolInfo(original).Symbol is not IMethodSymbol { MethodKind: MethodKind.Constructor } constructor
+                || !IsThread(constructor.ContainingType)
+                || constructor.Parameters.Length == 0
+                || visited.ArgumentList is not { Arguments.Count: > 0 } argumentList)
+            {
+                return visitedNode;
+            }
+            var first = argumentList.Arguments[0];
+            if (first.Expression.IsKind(SyntaxKind.NullLiteralExpression)) return visited;
+            var delegateType = constructor.Parameters[0].Type.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat);
+            // new ThreadStart(方法名或 lambda)：明确委托类型，Wrap 的重载就不会有歧义
+            var wrapped = SyntaxFactory.ParseExpression($"{Target}.Wrap(new {delegateType}({first.Expression.WithoutTrivia().ToFullString()}))");
+            Changed = true;
+            return visited.WithArgumentList(argumentList.WithArguments(
+                argumentList.Arguments.Replace(first, first.WithExpression(wrapped.WithTriviaFrom(first.Expression)))));
+        }
+
+        private static ExpressionSyntax Member(string name) => SyntaxFactory.ParseExpression($"{Target}.{name}");
+    }
+}

runtime/Sim.Runner/PathRewriter.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Operations;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 编译前把传给 System.IO（File、Directory、Path、FileStream、StreamWriter 等）和 Image / Bitmap 读写文件方法的路径参数
+/// 包上 Sim.Host.WindowsPaths.Fix(...)：教材按 Windows 写 AppDomain.CurrentDomain.BaseDirectory + "Camera\\"，
+/// 在 Linux 上反斜杠要换成斜杠。只包语义上确实是这些方法里名字带 path / file / dir 的字符串参数；
+/// 改写不换行，报错和异常里的行号不变。学生在编辑器里看到的仍是原来的代码。
+/// </summary>
+internal static class PathRewriter
+{
+    private const string Fix = "global::Sim.Host.WindowsPaths.Fix";
+
+    public static CSharpCompilation Rewrite(CSharpCompilation compilation)
+    {
+        var result = compilation;
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            var root = tree.GetRoot();
+            var targets = root.DescendantNodes()
+                .Where(n => n is InvocationExpressionSyntax or BaseObjectCreationExpressionSyntax)
+                .SelectMany(n => PathArguments(model.GetOperation(n)))
+                .ToHashSet();
+            if (targets.Count == 0) continue;
+            var rewritten = root.ReplaceNodes(targets, (_, node) =>
+                SyntaxFactory.ParseExpression($"{Fix}({node.WithoutTrivia().ToFullString()})").WithTriviaFrom(node));
+            result = result.ReplaceSyntaxTree(tree,
+                CSharpSyntaxTree.ParseText(SourceText.From(rewritten.ToFullString(), Encoding.UTF8), (CSharpParseOptions)tree.Options, tree.FilePath));
+        }
+        return result;
+    }
+
+    /// <summary>调用里要包起来的路径参数（只取学生直接写的表达式；不含反斜杠的字符串常量不用包）</summary>
+    private static IEnumerable<ExpressionSyntax> PathArguments(IOperation? operation)
+    {
+        var (method, arguments) = operation switch
+        {
+            IInvocationOperation invocation => (invocation.TargetMethod, invocation.Arguments),
+            IObjectCreationOperation creation when creation.Constructor != null => (creation.Constructor, creation.Arguments),
+            _ => (null, default),
+        };
+        if (method == null || !HandlesFiles(method.ContainingType)) yield break;
+        foreach (var argument in arguments)
+        {
+            if (argument.Parameter is not { } parameter || !IsPathName(parameter.Name)) continue;
+            var values = argument.ArgumentKind == ArgumentKind.ParamArray && argument.Value is IArrayCreationOperation { Initializer: { } init }
+                ? init.ElementValues
+                : [argument.Value];
+            foreach (var value in values)
+            {
+                if (value.IsImplicit || value.Type?.SpecialType != SpecialType.System_String) continue;
+                if (value.ConstantValue is { HasValue: true, Value: string constant } && !constant.Contains('\\')) continue;
+                if (value.Syntax is ExpressionSyntax expression) yield return expression;
+            }
+        }
+    }
+
+    private static bool HandlesFiles(INamedTypeSymbol type)
+    {
+        var ns = type.ContainingNamespace?.ToDisplayString();
+        return ns == "System.IO" || (ns == "System.Drawing" && type.Name is "Image" or "Bitmap");
+    }
+
+    private static bool IsPathName(string name) =>
+        name.Contains("path", StringComparison.OrdinalIgnoreCase)
+        || name.Contains("file", StringComparison.OrdinalIgnoreCase)
+        || name.Contains("dir", StringComparison.OrdinalIgnoreCase);
+}

runtime/Sim.Runner/Program.cs

@@ -2,20 +2,24 @@ using System;
 using System.IO;
 using Sim.Runner;
 
-// 两种模式，都通过标准输入输出与 Bun 服务器交换 JSON 消息（每行一条）：
+// 三种模式，都通过标准输入输出与 Bun 服务器交换 JSON 消息（每行一条）：
 //   dotnet Sim.Runner.dll compile-server   常驻编译服务，全服务器共用一个，编译学生工程并把程序集写回工程目录
+//   dotnet Sim.Runner.dll language-server  常驻语言服务，全服务器共用一个：代码补全、悬停提示、参数提示、边写边检查
+//   dotnet Sim.Runner.dll sql-server       常驻 SQL 服务：数据库页面的查询、对象资源管理器，评分前准备实验数据库
 //   dotnet Sim.Runner.dll run <工程目录>    运行已编译的学生程序，每次运行一个进程
 // 运行模式不加载 Roslyn，单个学生程序的内存占用因此小得多。
 
 return args switch
 {
     ["compile-server"] => CompileServer.Run(),
+    ["language-server"] => LanguageServer.Run(),
+    ["sql-server"] => SqlService.Run(),
     ["run", var dir] when Directory.Exists(dir) => StudentProgramHost.Run(dir),
     _ => Usage(),
 };
 
 static int Usage()
 {
-    Console.Error.WriteLine("用法：Sim.Runner compile-server | Sim.Runner run <工程目录>");
+    Console.Error.WriteLine("用法：Sim.Runner compile-server | Sim.Runner language-server | Sim.Runner sql-server | Sim.Runner run <工程目录>");
     return 2;
 }

runtime/Sim.Runner/ProjectExporter.cs

@@ -0,0 +1,625 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 导出 VS 工程：把学生工程打包成教材那样的 VS 2012 窗体应用工程（zip），在机房电脑上用 VS 打开接着改、按 F5 运行。
+/// <list type="bullet">
+/// <item>先照机房的环境检查：C# 5（VS 2012 的编译器）、.NET Framework 4.5、真机版设备类库，有错误就不导出。</item>
+/// <item>平台生成的 Properties/Resources.Designer.cs 从素材库取图，导出时换成 VS 生成的写法和 Resources.resx，图片放在 Resources 文件夹；
+/// 代码里按文件名用到的素材（如 ring.mp3）设成复制到输出目录，运行时在 bin\Debug\Resources 下，和教材一样。</item>
+/// <item>教材 dll 放在工程的 lib 文件夹，用到的才加引用（和教材工程一样只引用设备类库、控件库），编译时 VS 把它们和依赖复制到 bin\Debug。</item>
+/// <item>文本文件用带 BOM 的 UTF-8 和 CRLF 换行（VS 2012 打开不带 BOM 的文件会把中文当成 GBK）。</item>
+/// </list>
+/// </summary>
+internal static class ProjectExporter
+{
+    public sealed record Result(bool Success, byte[] Zip, JsonArray Diagnostics);
+
+    /// <summary>VS 2012 的编译器支持到 C# 5</summary>
+    internal static readonly CSharpParseOptions Vs2012 = new(LanguageVersion.CSharp5);
+
+    private const string PlatformResourcesFile = "Properties/Resources.Designer.cs";
+    private const string LedCompatFile = "LedHelperCompat.cs";
+    private const string LedCompatClass = "LedHelperCompat";
+
+    private static readonly Regex ResourceMember = new(
+        @"internal static (System\.Drawing\.Bitmap|byte\[\]) ([\p{L}\p{N}_]+) \{\s*get \{ return global::Sim\.Host\.ProjectResources\.(?:Image|Bytes)\(""([^""]+)""\); \}");
+    private static readonly Regex ResourcesNamespace = new(@"namespace\s+([\p{L}\p{N}_.]+)\.Properties\b");
+    private static readonly Regex FirstNamespace = new(@"^\s*namespace\s+([\p{L}\p{N}_.]+)", RegexOptions.Multiline);
+
+    /// <summary>VS 2012 窗体应用模板默认的引用（教材工程都有这些）</summary>
+    private static readonly string[] DefaultReferences =
+    {
+        "System", "System.Core", "System.Xml.Linq", "System.Data.DataSetExtensions", "Microsoft.CSharp",
+        "System.Data", "System.Deployment", "System.Drawing", "System.Windows.Forms", "System.Xml",
+    };
+
+    private const string BitmapType = "System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a";
+    private const string BytesType = "System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
+
+    private sealed record ResourceItem(string Name, bool Image, string File);
+
+    private sealed record Source(string Path, string Text);
+
+    /// <summary>libsDir：教材 dll 所在目录；galleryDir：平台素材库；name：工程名（也是程序集名、文件夹名）</summary>
+    public static Result Export(string projectDir, string libsDir, string galleryDir, string name)
+    {
+        var libs = ExeExporter.TextbookLibs(libsDir, "导出工程");
+        var sources = StudentCompiler.SourceFiles(projectDir)
+            .Select(path => new Source(Path.GetRelativePath(projectDir, path).Replace('\\', '/'), File.ReadAllText(path)))
+            .ToList();
+
+        var platformResources = sources.FirstOrDefault(s => s.Path == PlatformResourcesFile)?.Text;
+        var items = platformResources == null
+            ? new List<ResourceItem>()
+            : ResourceMember.Matches(platformResources)
+                .Select(m => new ResourceItem(m.Groups[2].Value, m.Groups[1].Value != "byte[]", Path.GetFileName(m.Groups[3].Value)))
+                .ToList();
+        var rootNamespace = RootNamespace(sources, platformResources, name);
+        sources.RemoveAll(s => s.Path == PlatformResourcesFile);
+
+        // VS 模板里有、平台上没有的文件（Properties 文件夹由平台管理，学生建不了同名文件）
+        var generated = new List<Source>
+        {
+            new("Properties/AssemblyInfo.cs", AssemblyInfo(name)),
+            new("Properties/Resources.Designer.cs", ResourcesDesigner(rootNamespace, items)),
+            new("Properties/Settings.Designer.cs", SettingsDesigner(rootNamespace)),
+        };
+        var compat = new Source(LedCompatFile, LedCompat);
+
+        // 照机房的环境编译一遍：C# 5、.NET Framework 4.5、真机版设备类库
+        var trees = sources.Concat(generated).Append(compat)
+            .Select(s => CSharpSyntaxTree.ParseText(SourceText.From(s.Text, Encoding.UTF8), Vs2012, path: s.Path))
+            .ToList();
+        var libReferences = libs.ToDictionary(p => (MetadataReference)MetadataReference.CreateFromFile(p), p => p);
+        var compilation = CSharpCompilation.Create(name, trees, ExeExporter.Framework.Value.Concat(libReferences.Keys), ExeExporter.Options);
+        using (var pe = new MemoryStream())
+        {
+            var emit = compilation.Emit(pe);
+            var diagnostics = new JsonArray();
+            foreach (var diagnostic in emit.Diagnostics.Where(d => d.Severity == DiagnosticSeverity.Error))
+            {
+                diagnostics.Add(StudentCompiler.ToJson(diagnostic));
+            }
+            if (!emit.Success) return new Result(false, Array.Empty<byte>(), diagnostics);
+        }
+
+        var studentTrees = trees.Take(sources.Count).ToList();
+        var code = sources.Concat(generated).ToList();
+        if (UsesLedCompat(compilation, studentTrees))
+        {
+            code.Add(compat);
+            studentTrees.Add(trees[^1]);
+        }
+        else
+        {
+            compilation = compilation.RemoveSyntaxTrees(trees[^1]);
+        }
+
+        // 引用：和教材工程一样，教材 dll 只引用代码里直接用到的（其他的作为依赖由 VS 复制到输出目录），
+        // 框架引用在 VS 模板默认的之外加上用到的（如图表控件）。只带这些引用编译不过时（用到的类型的基类在别的 dll 里等）引用全部教材 dll
+        var direct = DirectlyUsedAssemblies(compilation, studentTrees);
+        var frameworkReferences = DefaultReferences
+            .Concat(ExeExporter.Framework.Value.OfType<PortableExecutableReference>()
+                .Select(r => Path.GetFileNameWithoutExtension(r.FilePath)).OfType<string>()
+                .Where(n => direct.Contains(n) && n != "mscorlib" && !DefaultReferences.Contains(n))
+                .OrderBy(n => n, StringComparer.Ordinal))
+            .ToList();
+        var textbookReferences = libs.Where(p => direct.Contains(Path.GetFileNameWithoutExtension(p))).ToList();
+        var reduced = compilation.WithReferences(ExeExporter.Framework.Value.Concat(libReferences.Where(r => textbookReferences.Contains(r.Value)).Select(r => r.Key)));
+        if (reduced.GetDiagnostics().Any(d => d.Severity == DiagnosticSeverity.Error)) textbookReferences = libs.ToList();
+        textbookReferences = textbookReferences.Select(p => Path.GetFileName(p)).ToList();
+
+        var forms = Forms(compilation, sources, studentTrees);
+        var media = ExeExporter.ReferencedMedia(galleryDir, sources.Select(s => s.Text));
+        var images = items.Select(i => i.File).Where(f => File.Exists(Path.Combine(galleryDir, f))).Distinct().ToList();
+
+        var zip = new ZipWriter(DateTime.UtcNow.AddHours(8));
+        var root = $"{name}/";
+        var dir = $"{name}/{name}/";
+        zip.Add(root + name + ".sln", Text(Solution(name)));
+        zip.Add(dir + name + ".csproj", Text(Project(name, rootNamespace, code, forms, frameworkReferences, textbookReferences, images, media)));
+        zip.Add(dir + "App.config", Text(AppConfig));
+        zip.Add(dir + "Properties/Settings.settings", Text(SettingsFile));
+        zip.Add(dir + "Properties/Resources.resx", Text(Resx(items.Select(ResourceEntry))));
+        foreach (var source in code) zip.Add(dir + source.Path, Text(source.Text));
+        foreach (var form in forms.Where(f => f.Resx))
+        {
+            zip.Add(dir + Path.ChangeExtension(form.Path, ".resx"), Text(Resx(form.OcxKeys.Select(OcxEntry))));
+        }
+        foreach (var file in images.Union(media).OrderBy(f => f, StringComparer.Ordinal))
+        {
+            zip.Add(dir + "Resources/" + file, File.ReadAllBytes(Path.Combine(galleryDir, file)));
+        }
+        foreach (var lib in libs) zip.Add(dir + "lib/" + Path.GetFileName(lib), File.ReadAllBytes(lib));
+        return new Result(true, zip.Finish(), new JsonArray());
+    }
+
+    /// <summary>工程的默认命名空间：平台的资源类所在的命名空间，否则取 Program.cs（再其次其他文件）里的第一个命名空间</summary>
+    private static string RootNamespace(List<Source> sources, string? platformResources, string name)
+    {
+        if (platformResources != null && ResourcesNamespace.Match(platformResources) is { Success: true } r) return r.Groups[1].Value;
+        foreach (var source in sources.OrderBy(s => s.Path == "Program.cs" ? 0 : 1).ThenBy(s => s.Path, StringComparer.Ordinal))
+        {
+            var m = FirstNamespace.Match(source.Text);
+            if (m.Success) return m.Groups[1].Value;
+        }
+        return name;
+    }
+
+    /// <summary>代码里直接用到的类型、成员所在的程序集（程序集名）</summary>
+    private static HashSet<string> DirectlyUsedAssemblies(CSharpCompilation compilation, List<SyntaxTree> trees)
+    {
+        var names = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        void Add(ISymbol? symbol)
+        {
+            while (symbol is IArrayTypeSymbol array) symbol = array.ElementType;
+            if (symbol?.ContainingAssembly is { } assembly) names.Add(assembly.Identity.Name);
+            if (symbol is INamedTypeSymbol { IsGenericType: true } generic)
+            {
+                foreach (var argument in generic.TypeArguments) Add(argument);
+            }
+        }
+        foreach (var tree in trees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            foreach (var node in tree.GetRoot().DescendantNodes())
+            {
+                Add(model.GetSymbolInfo(node).Symbol);
+                Add(model.GetTypeInfo(node).Type);
+            }
+        }
+        return names;
+    }
+
+    /// <summary>学生代码是否用到了补上的 ledHelper.Close()（教材类库里没有）</summary>
+    private static bool UsesLedCompat(CSharpCompilation compilation, List<SyntaxTree> trees)
+    {
+        foreach (var tree in trees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            foreach (var invocation in tree.GetRoot().DescendantNodes().OfType<InvocationExpressionSyntax>())
+            {
+                if (model.GetSymbolInfo(invocation).Symbol is IMethodSymbol { ReducedFrom.ContainingType.Name: LedCompatClass }) return true;
+            }
+        }
+        return false;
+    }
+
+    /// <summary>窗体、用户控件：VS 里显示成可以打开设计器的文件，Designer.cs 和 .resx 挂在它下面</summary>
+    private sealed record Form(string Path, string SubType, bool Resx, List<string> OcxKeys);
+
+    private static List<Form> Forms(CSharpCompilation compilation, List<Source> sources, List<SyntaxTree> trees)
+    {
+        var form = compilation.GetTypeByMetadataName("System.Windows.Forms.Form");
+        var userControl = compilation.GetTypeByMetadataName("System.Windows.Forms.UserControl");
+        var result = new List<Form>();
+        for (var i = 0; i < sources.Count; i++)
+        {
+            var path = sources[i].Path;
+            if (path.EndsWith(".Designer.cs")) continue;
+            var designer = sources.FirstOrDefault(s => s.Path == path[..^3] + ".Designer.cs");
+            var model = compilation.GetSemanticModel(trees[i]);
+            var type = trees[i].GetRoot().DescendantNodes().OfType<ClassDeclarationSyntax>()
+                .Select(c => model.GetDeclaredSymbol(c)).FirstOrDefault(t => t != null);
+            string? subType = null;
+            for (var t = type?.BaseType; t != null && subType == null; t = t.BaseType)
+            {
+                if (SymbolEqualityComparer.Default.Equals(t, form)) subType = "Form";
+                else if (SymbolEqualityComparer.Default.Equals(t, userControl)) subType = "UserControl";
+            }
+            if (subType == null) continue;
+            var keys = designer == null
+                ? new List<string>()
+                : ExeExporter.OcxStateKey.Matches(designer.Text).Select(m => m.Groups[1].Value).Distinct().OrderBy(k => k, StringComparer.Ordinal).ToList();
+            result.Add(new Form(path, subType, designer != null, keys));
+        }
+        return result;
+    }
+
+    private static string Project(string name, string rootNamespace, List<Source> code, List<Form> forms,
+        List<string> frameworkReferences, List<string> textbookReferences, List<string> images, List<string> media)
+    {
+        static string Win(string path) => path.Replace('/', '\\');
+        static string X(string text) => SecurityElement.Escape(text);
+
+        var s = new StringBuilder();
+        s.Append($"""
+            <?xml version="1.0" encoding="utf-8"?>
+            <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+              <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+              <PropertyGroup>
+                <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+                <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+                <ProjectGuid>{ProjectGuid(name)}</ProjectGuid>
+                <OutputType>WinExe</OutputType>
+                <AppDesignerFolder>Properties</AppDesignerFolder>
+                <RootNamespace>{X(rootNamespace)}</RootNamespace>
+                <AssemblyName>{X(name)}</AssemblyName>
+                <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+                <FileAlignment>512</FileAlignment>
+              </PropertyGroup>
+              <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+                <PlatformTarget>AnyCPU</PlatformTarget>
+                <DebugSymbols>true</DebugSymbols>
+                <DebugType>full</DebugType>
+                <Optimize>false</Optimize>
+                <OutputPath>bin\Debug\</OutputPath>
+                <DefineConstants>DEBUG;TRACE</DefineConstants>
+                <ErrorReport>prompt</ErrorReport>
+                <WarningLevel>4</WarningLevel>
+              </PropertyGroup>
+              <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+                <PlatformTarget>AnyCPU</PlatformTarget>
+                <DebugType>pdbonly</DebugType>
+                <Optimize>true</Optimize>
+                <OutputPath>bin\Release\</OutputPath>
+                <DefineConstants>TRACE</DefineConstants>
+                <ErrorReport>prompt</ErrorReport>
+                <WarningLevel>4</WarningLevel>
+              </PropertyGroup>
+              <ItemGroup>
+
+            """);
+        foreach (var lib in textbookReferences)
+        {
+            s.Append($"""
+                    <Reference Include="{X(Path.GetFileNameWithoutExtension(lib))}">
+                      <HintPath>lib\{X(lib)}</HintPath>
+                    </Reference>
+
+                """);
+        }
+        foreach (var reference in frameworkReferences) s.Append($"    <Reference Include=\"{reference}\" />\n");
+        s.Append("  </ItemGroup>\n  <ItemGroup>\n");
+
+        var formPaths = forms.ToDictionary(f => f.Path);
+        // 和 VS 一样 Form1.cs 在 Form1.Designer.cs 前面
+        static string Order(string path) => path.EndsWith(".Designer.cs") ? path[..^12] + ".cs\u0001" : path;
+        foreach (var source in code.Where(c => !c.Path.StartsWith("Properties/")).OrderBy(c => Order(c.Path), StringComparer.Ordinal))
+        {
+            var path = source.Path;
+            if (formPaths.TryGetValue(path, out var form))
+            {
+                s.Append($"    <Compile Include=\"{X(Win(path))}\">\n      <SubType>{form.SubType}</SubType>\n    </Compile>\n");
+            }
+            else if (path.EndsWith(".Designer.cs") && formPaths.ContainsKey(path[..^12] + ".cs"))
+            {
+                s.Append($"    <Compile Include=\"{X(Win(path))}\">\n      <DependentUpon>{X(Path.GetFileName(path[..^12] + ".cs"))}</DependentUpon>\n    </Compile>\n");
+            }
+            else
+            {
+                s.Append($"    <Compile Include=\"{X(Win(path))}\" />\n");
+            }
+        }
+        s.Append("    <Compile Include=\"Properties\\AssemblyInfo.cs\" />\n");
+        foreach (var form in forms.Where(f => f.Resx).OrderBy(f => f.Path, StringComparer.Ordinal))
+        {
+            s.Append($"    <EmbeddedResource Include=\"{X(Win(Path.ChangeExtension(form.Path, ".resx")))}\">\n      <DependentUpon>{X(Path.GetFileName(form.Path))}</DependentUpon>\n    </EmbeddedResource>\n");
+        }
+        s.Append("""
+                <EmbeddedResource Include="Properties\Resources.resx">
+                  <Generator>ResXFileCodeGenerator</Generator>
+                  <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+                  <SubType>Designer</SubType>
+                </EmbeddedResource>
+                <Compile Include="Properties\Resources.Designer.cs">
+                  <AutoGen>True</AutoGen>
+                  <DependentUpon>Resources.resx</DependentUpon>
+                  <DesignTime>True</DesignTime>
+                </Compile>
+                <None Include="Properties\Settings.settings">
+                  <Generator>SettingsSingleFileGenerator</Generator>
+                  <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+                </None>
+                <Compile Include="Properties\Settings.Designer.cs">
+                  <AutoGen>True</AutoGen>
+                  <DependentUpon>Settings.settings</DependentUpon>
+                  <DesignTimeSharedInput>True</DesignTimeSharedInput>
+                </Compile>
+              </ItemGroup>
+              <ItemGroup>
+                <None Include="App.config" />
+              </ItemGroup>
+
+            """);
+        var files = images.Union(media).OrderBy(f => f, StringComparer.Ordinal).ToList();
+        if (files.Count > 0)
+        {
+            s.Append("  <ItemGroup>\n");
+            foreach (var file in files)
+            {
+                // 代码里按文件名用的素材复制到 bin\Debug\Resources（和教材工程的输出目录一样）；Properties.Resources 的图片编译进程序
+                s.Append(media.Contains(file)
+                    ? $"    <Content Include=\"Resources\\{X(file)}\">\n      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>\n    </Content>\n"
+                    : $"    <None Include=\"Resources\\{X(file)}\" />\n");
+            }
+            s.Append("  </ItemGroup>\n");
+        }
+        s.Append("""
+              <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+            </Project>
+            """);
+        return s.ToString();
+    }
+
+    private static string Solution(string name) => $$"""
+
+        Microsoft Visual Studio Solution File, Format Version 12.00
+        # Visual Studio 2012
+        Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "{{name}}", "{{name}}\{{name}}.csproj", "{{ProjectGuid(name)}}"
+        EndProject
+        Global
+        	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+        		Debug|Any CPU = Debug|Any CPU
+        		Release|Any CPU = Release|Any CPU
+        	EndGlobalSection
+        	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+        		{{ProjectGuid(name)}}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+        		{{ProjectGuid(name)}}.Debug|Any CPU.Build.0 = Debug|Any CPU
+        		{{ProjectGuid(name)}}.Release|Any CPU.ActiveCfg = Release|Any CPU
+        		{{ProjectGuid(name)}}.Release|Any CPU.Build.0 = Release|Any CPU
+        	EndGlobalSection
+        	GlobalSection(SolutionProperties) = preSolution
+        		HideSolutionNode = FALSE
+        	EndGlobalSection
+        EndGlobal
+
+        """;
+
+    /// <summary>同一个工程名每次导出的 GUID 相同（重新导出后覆盖旧的，VS 认成同一个工程）</summary>
+    private static string ProjectGuid(string name) => "{" + NameGuid("project:" + name).ToString().ToUpperInvariant() + "}";
+
+    private static Guid NameGuid(string text) => new(MD5.HashData(Encoding.UTF8.GetBytes(text)));
+
+    private static string AssemblyInfo(string name) => $$"""
+        using System.Reflection;
+        using System.Runtime.CompilerServices;
+        using System.Runtime.InteropServices;
+
+        // 有关程序集的常规信息通过以下
+        // 特性集控制。更改这些特性值可修改
+        // 与程序集关联的信息。
+        [assembly: AssemblyTitle({{SymbolDisplay.FormatLiteral(name, true)}})]
+        [assembly: AssemblyDescription("")]
+        [assembly: AssemblyConfiguration("")]
+        [assembly: AssemblyCompany("")]
+        [assembly: AssemblyProduct({{SymbolDisplay.FormatLiteral(name, true)}})]
+        [assembly: AssemblyCopyright("Copyright ©  {{DateTime.UtcNow.AddHours(8).Year}}")]
+        [assembly: AssemblyTrademark("")]
+        [assembly: AssemblyCulture("")]
+
+        // 将 ComVisible 设置为 false 使此程序集中的类型
+        // 对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型，
+        // 则将该类型上的 ComVisible 特性设置为 true。
+        [assembly: ComVisible(false)]
+
+        // 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
+        [assembly: Guid("{{NameGuid("assembly:" + name)}}")]
+
+        // 程序集的版本信息由下面四个值组成:
+        //
+        //      主版本
+        //      次版本
+        //      生成号
+        //      修订号
+        //
+        // 可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值，
+        // 方法是按如下所示使用“*”:
+        // [assembly: AssemblyVersion("1.0.*")]
+        [assembly: AssemblyVersion("1.0.0.0")]
+        [assembly: AssemblyFileVersion("1.0.0.0")]
+
+        """;
+
+    /// <summary>和 VS 2012 的 ResXFileCodeGenerator 生成的一样（中文版 VS 的注释）</summary>
+    private static string ResourcesDesigner(string ns, List<ResourceItem> items)
+    {
+        var members = string.Concat(items.Select(item =>
+        {
+            var type = item.Image ? "System.Drawing.Bitmap" : "byte[]";
+            var what = item.Image ? "System.Drawing.Bitmap" : "System.Byte[]";
+            return $$"""
+
+                        /// <summary>
+                        ///   查找 {{what}} 类型的本地化资源。
+                        /// </summary>
+                        internal static {{type}} {{item.Name}} {
+                            get {
+                                object obj = ResourceManager.GetObject("{{item.Name}}", resourceCulture);
+                                return (({{type}})(obj));
+                            }
+                        }
+
+                """;
+        }));
+        return $$"""
+            //------------------------------------------------------------------------------
+            // <auto-generated>
+            //     此代码由工具生成。
+            //     运行时版本:4.0.30319.42000
+            //
+            //     对此文件的更改可能会导致不正确的行为，并且如果
+            //     重新生成代码，这些更改将会丢失。
+            // </auto-generated>
+            //------------------------------------------------------------------------------
+
+            namespace {{ns}}.Properties {
+                using System;
+
+
+                /// <summary>
+                ///   一个强类型的资源类，用于查找本地化的字符串等。
+                /// </summary>
+                // 此类是由 StronglyTypedResourceBuilder
+                // 类通过类似于 ResGen 或 Visual Studio 的工具自动生成的。
+                // 若要添加或移除成员，请编辑 .ResX 文件，然后重新运行 ResGen
+                // (以 /str 作为命令选项)，或重新生成 VS 项目。
+                [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+                [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+                [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+                internal class Resources {
+
+                    private static global::System.Resources.ResourceManager resourceMan;
+
+                    private static global::System.Globalization.CultureInfo resourceCulture;
+
+                    [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+                    internal Resources() {
+                    }
+
+                    /// <summary>
+                    ///   返回此类使用的缓存的 ResourceManager 实例。
+                    /// </summary>
+                    [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+                    internal static global::System.Resources.ResourceManager ResourceManager {
+                        get {
+                            if (object.ReferenceEquals(resourceMan, null)) {
+                                global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("{{ns}}.Properties.Resources", typeof(Resources).Assembly);
+                                resourceMan = temp;
+                            }
+                            return resourceMan;
+                        }
+                    }
+
+                    /// <summary>
+                    ///   使用此强类型资源类，为所有资源查找
+                    ///   重写当前线程的 CurrentUICulture 属性。
+                    /// </summary>
+                    [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+                    internal static global::System.Globalization.CultureInfo Culture {
+                        get {
+                            return resourceCulture;
+                        }
+                        set {
+                            resourceCulture = value;
+                        }
+                    }
+            {{members}}    }
+            }
+
+            """;
+    }
+
+    private static string SettingsDesigner(string ns) => $$"""
+        //------------------------------------------------------------------------------
+        // <auto-generated>
+        //     This code was generated by a tool.
+        //     Runtime Version:4.0.30319.42000
+        //
+        //     Changes to this file may cause incorrect behavior and will be lost if
+        //     the code is regenerated.
+        // </auto-generated>
+        //------------------------------------------------------------------------------
+
+        namespace {{ns}}.Properties
+        {
+
+
+            [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+            [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+            internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+            {
+
+                private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+                public static Settings Default
+                {
+                    get
+                    {
+                        return defaultInstance;
+                    }
+                }
+            }
+        }
+
+        """;
+
+    private const string SettingsFile = """
+        <?xml version='1.0' encoding='utf-8'?>
+        <SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)">
+          <Profiles>
+            <Profile Name="(Default)" />
+          </Profiles>
+          <Settings />
+        </SettingsFile>
+        """;
+
+    private const string AppConfig = """
+        <?xml version="1.0" encoding="utf-8" ?>
+        <configuration>
+            <startup>
+                <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
+            </startup>
+        </configuration>
+        """;
+
+    /// <summary>
+    /// 书上项目 2 任务 3 调用 DeviceCtrlHelper.ledHelper.Close()，教材的类库里没有这个方法（LED 屏每次发送才用串口，不占着），
+    /// 平台补上了它。用到时导出工程里也带上这个文件，书上的代码照样能编译。
+    /// </summary>
+    private const string LedCompat = """
+        // 教材的设备类库里 LEDHelper 没有 Close 方法（LED 屏每次发送时才打开串口，发完就关），
+        // 书上的代码调用了 ledHelper.Close()，这里补一个什么都不做的方法，让代码能编译。
+        internal static class LedHelperCompat
+        {
+            internal static void Close(this global::DeviceCtrlLibrary.LEDHelper helper)
+            {
+            }
+        }
+
+        """;
+
+    private static readonly Lazy<string> ResxHeader = new(() =>
+    {
+        using var stream = typeof(ProjectExporter).Assembly.GetManifestResourceStream("ResxHeader.xml")!;
+        using var reader = new StreamReader(stream, Encoding.UTF8);
+        return reader.ReadToEnd().TrimEnd('\n');
+    });
+
+    private static string Resx(IEnumerable<string> entries)
+    {
+        var list = entries.ToList();
+        var s = new StringBuilder(ResxHeader.Value).Append('\n');
+        if (list.Any(e => e.Contains("ResXFileRef")))
+        {
+            s.Append("  <assembly alias=\"System.Windows.Forms\" name=\"System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\" />\n");
+        }
+        foreach (var entry in list) s.Append(entry);
+        return s.Append("</root>").ToString();
+    }
+
+    private static string ResourceEntry(ResourceItem item) =>
+        $"  <data name=\"{SecurityElement.Escape(item.Name)}\" type=\"System.Resources.ResXFileRef, System.Windows.Forms\">\n" +
+        $"    <value>..\\Resources\\{SecurityElement.Escape(item.File)};{(item.Image ? BitmapType : BytesType)}</value>\n" +
+        "  </data>\n";
+
+    /// <summary>媒体播放器的 OcxState：教材 Form1.resx 里的默认状态，和 VS 一样每行 80 个字符</summary>
+    private static string OcxEntry(string key)
+    {
+        var data = ExeExporter.MediaPlayerOcxState;
+        var lines = Enumerable.Range(0, (data.Length + 79) / 80).Select(i => "        " + data.Substring(i * 80, Math.Min(80, data.Length - i * 80)));
+        return $"  <data name=\"{SecurityElement.Escape(key)}\" mimetype=\"application/x-microsoft.net.object.binary.base64\">\n" +
+               "    <value>\n" + string.Join("\n", lines) + "\n</value>\n  </data>\n";
+    }
+
+    /// <summary>文本文件：带 BOM 的 UTF-8，CRLF 换行</summary>
+    private static byte[] Text(string text)
+    {
+        var crlf = text.Replace("\r\n", "\n").Replace("\n", "\r\n");
+        return Encoding.UTF8.GetPreamble().Concat(Encoding.UTF8.GetBytes(crlf)).ToArray();
+    }
+}

runtime/Sim.Runner/ProjectTemplate/ResxHeader.xml

@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>

runtime/Sim.Runner/Sim.Runner.csproj

@@ -11,9 +11,30 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" />
+    <!-- 语言服务（代码补全、悬停提示）：和 VS 的 IntelliSense 用同一套引擎；只有 language-server 模式会加载 -->
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" Version="4.14.0" />
+  </ItemGroup>
+  <!-- 导出 EXE：照教材工程（.NET Framework 4.5）编译学生代码，要用 4.5 的引用程序集（只供编译，不含实现）。
+       只复制教材工程引用的那些（VS 窗体应用模板默认的引用加图表控件），放到输出目录的 netfx/ -->
+  <ItemGroup>
+    <PackageDownload Include="Microsoft.NETFramework.ReferenceAssemblies.net45" Version="[1.0.3]" />
+  </ItemGroup>
+  <Target Name="CopyNetFxReferences" AfterTargets="Build">
+    <PropertyGroup>
+      <NetFxDir>$(NuGetPackageRoot)microsoft.netframework.referenceassemblies.net45/1.0.3/build/.NETFramework/v4.5/</NetFxDir>
+    </PropertyGroup>
+    <ItemGroup>
+      <NetFxReference Include="$(NetFxDir)mscorlib.dll;$(NetFxDir)System.dll;$(NetFxDir)System.Core.dll;$(NetFxDir)System.Data.dll;$(NetFxDir)System.Data.DataSetExtensions.dll;$(NetFxDir)System.Deployment.dll;$(NetFxDir)System.Drawing.dll;$(NetFxDir)System.Net.Http.dll;$(NetFxDir)System.Windows.Forms.dll;$(NetFxDir)System.Windows.Forms.DataVisualization.dll;$(NetFxDir)System.Xml.dll;$(NetFxDir)System.Xml.Linq.dll;$(NetFxDir)Microsoft.CSharp.dll" />
+    </ItemGroup>
+    <Copy SourceFiles="@(NetFxReference)" DestinationFiles="@(NetFxReference->'$(OutDir)netfx/%(RecursiveDir)%(Filename)%(Extension)')" SkipUnchangedFiles="true" />
+  </Target>
+  <!-- 导出 VS 工程：.resx 文件开头的标准内容（VS 生成的架构说明和 resheader） -->
+  <ItemGroup>
+    <EmbeddedResource Include="ProjectTemplate/ResxHeader.xml" LogicalName="ResxHeader.xml" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="../Sim.WinForms/Sim.WinForms.csproj" />
     <ProjectReference Include="../Sim.Devices/Sim.Devices.csproj" />
+    <ProjectReference Include="../Sim.Data/Sim.Data.csproj" />
   </ItemGroup>
 </Project>

runtime/Sim.Runner/SqlService.cs

@@ -0,0 +1,174 @@
+using System;
+using System.Collections.Generic;
+using System.Data.SqlClient;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.Encodings.Web;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
+using System.Threading;
+using System.Threading.Tasks;
+using Sim.Data.Engine;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 常驻 SQL 服务：数据库页面（代替 SSMS）的查询、对象资源管理器，以及评分前按实验预置脚本准备数据库。
+/// 请求里的目录由服务器给出（学生自己的数据库目录或评分用的临时目录），学生的 SQL 经转写后只能操作这个目录里的库。
+/// 每行一个请求 {"id":…,"type":"exec"|"script"|"explorer",…}，回复带同样的 id；请求可以并发处理。
+/// </summary>
+internal static class SqlService
+{
+    private static readonly JsonSerializerOptions JsonOptions = new() { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping };
+    private static readonly TimeSpan TimeLimit = TimeSpan.FromSeconds(5);
+    /// <summary>查询窗口最多显示的行数</summary>
+    private const int MaxRows = 1000;
+
+    public static int Run()
+    {
+        // 日期等按中文 Windows 上 SSMS 的样子显示
+        CultureInfo.DefaultThreadCurrentCulture = CultureInfo.GetCultureInfo("zh-CN");
+        using var input = new StreamReader(Console.OpenStandardInput(), new UTF8Encoding(false));
+        var output = new StreamWriter(Console.OpenStandardOutput(), new UTF8Encoding(false)) { AutoFlush = true };
+        var writeLock = new object();
+        using var slots = new SemaphoreSlim(4);
+
+        output.WriteLine(new JsonObject { ["type"] = "ready" }.ToJsonString(JsonOptions));
+        while (input.ReadLine() is { } line)
+        {
+            slots.Wait();
+            Task.Run(() =>
+            {
+                JsonObject reply;
+                JsonNode? id = null;
+                try
+                {
+                    var request = JsonNode.Parse(line)!.AsObject();
+                    id = request["id"]?.DeepClone();
+                    reply = Handle(request);
+                }
+                catch (SqlException ex)
+                {
+                    reply = Error(ex);
+                }
+                catch (Exception ex)
+                {
+                    reply = new JsonObject { ["type"] = "error", ["number"] = 0, ["message"] = ex.Message, ["line"] = 1 };
+                }
+                finally
+                {
+                    slots.Release();
+                }
+                reply["id"] = id;
+                lock (writeLock) output.WriteLine(reply.ToJsonString(JsonOptions));
+            });
+        }
+        return 0;
+    }
+
+    private static JsonObject Handle(JsonObject request)
+    {
+        var dir = (string?)request["dir"] ?? throw new ArgumentException("缺少 dir");
+        var store = new DatabaseStore(dir);
+        return (string?)request["type"] switch
+        {
+            "exec" => Exec(store, (string?)request["database"] ?? DatabaseStore.Master, (string?)request["sql"] ?? ""),
+            "script" => Script(store, (string?)request["sql"] ?? ""),
+            "explorer" => Explorer(store),
+            var type => throw new ArgumentException($"不认识的请求 {type}"),
+        };
+    }
+
+    /// <summary>查询窗口执行一批语句：返回各个结果集（最多 1000 行）、受影响的行数，以及执行后的当前库（USE 可能切换了）</summary>
+    private static JsonObject Exec(DatabaseStore store, string database, string sql)
+    {
+        var started = Environment.TickCount64;
+        using var session = new Session(store, database, TimeLimit);
+        var batch = session.Execute(sql, name => (false, null));
+        var results = new JsonArray();
+        foreach (var result in batch.Results)
+        {
+            var columns = new JsonArray();
+            foreach (var column in result.Columns) columns.Add(new JsonObject { ["name"] = column.Name, ["type"] = column.Type?.ToString() });
+            var rows = new JsonArray();
+            foreach (var row in result.Rows.Take(MaxRows))
+            {
+                var cells = new JsonArray();
+                for (var i = 0; i < row.Length; i++) cells.Add(Display(row[i], result.Columns[i].Type?.IsDate == true));
+                rows.Add(cells);
+            }
+            results.Add(new JsonObject { ["columns"] = columns, ["rows"] = rows, ["total"] = result.Rows.Count });
+        }
+        return new JsonObject
+        {
+            ["type"] = "result",
+            ["database"] = session.Database,
+            ["results"] = results,
+            ["affected"] = batch.RecordsAffected,
+            ["ms"] = Environment.TickCount64 - started,
+        };
+    }
+
+    /// <summary>执行一个脚本（多批语句，用单独一行的 GO 分隔），从 master 开始，USE 对后面的批次有效</summary>
+    private static JsonObject Script(DatabaseStore store, string sql)
+    {
+        var batches = Regex.Split(sql, @"^\s*GO\s*$", RegexOptions.Multiline | RegexOptions.IgnoreCase).Where(b => !string.IsNullOrWhiteSpace(b));
+        using var session = new Session(store, DatabaseStore.Master, TimeSpan.FromSeconds(30));
+        foreach (var batch in batches) session.Execute(batch, name => (false, null));
+        return new JsonObject { ["type"] = "done" };
+    }
+
+    /// <summary>对象资源管理器：所有库、库里的表、表的列</summary>
+    private static JsonObject Explorer(DatabaseStore store)
+    {
+        var databases = new JsonArray();
+        foreach (var name in store.List())
+        {
+            var tables = new JsonArray();
+            using (var connection = store.Open(name))
+            {
+                foreach (var table in DatabaseStore.ListTables(connection))
+                {
+                    var info = DatabaseStore.GetTable(connection, table);
+                    var columns = new JsonArray();
+                    foreach (var column in info?.Columns ?? Array.Empty<ColumnInfo>())
+                    {
+                        columns.Add(new JsonObject
+                        {
+                            ["name"] = column.Name,
+                            ["type"] = column.Type.ToString(),
+                            ["nullable"] = column.Nullable,
+                            ["identity"] = column.Identity,
+                            ["primaryKey"] = column.PrimaryKey,
+                        });
+                    }
+                    tables.Add(new JsonObject { ["name"] = table, ["columns"] = columns });
+                }
+            }
+            databases.Add(new JsonObject { ["name"] = name, ["tables"] = tables });
+        }
+        return new JsonObject { ["type"] = "explorer", ["databases"] = databases };
+    }
+
+    /// <summary>结果网格里显示的样子，和 SSMS 一致：日期 2024-01-16 09:05:03.000，bit 显示 1 / 0，二进制显示 0x…</summary>
+    private static JsonNode? Display(object value, bool dateOnly) => value switch
+    {
+        DBNull => null,
+        DateTime d when dateOnly => d.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture),
+        DateTime d => d.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.InvariantCulture),
+        bool b => b ? 1 : 0,
+        byte[] bytes => "0x" + Convert.ToHexString(bytes.AsSpan(0, Math.Min(bytes.Length, 32))) + (bytes.Length > 32 ? "…" : ""),
+        int i => i,
+        long l => l,
+        double x => x,
+        decimal m => m,
+        IFormattable f => f.ToString(null, CultureInfo.InvariantCulture),
+        _ => value.ToString(),
+    };
+
+    private static JsonObject Error(SqlException ex) =>
+        new() { ["type"] = "error", ["number"] = ex.Number, ["message"] = ex.Message, ["line"] = ex.LineNumber };
+}

runtime/Sim.Runner/StudentCompiler.cs

@@ -27,46 +27,83 @@ internal static class StudentCompiler
         "System.Drawing.dll",
     };
 
-    private static readonly string[] SimAssemblies = { "Sim.WinForms.dll", "Sim.Devices.dll" };
+    private static readonly string[] SimAssemblies = { "Sim.WinForms.dll", "Sim.Devices.dll", "Sim.Data.dll" };
 
     public sealed record Result(bool Success, byte[] Assembly, byte[] Pdb, JsonArray Diagnostics);
 
+    /// <summary>编译和语言服务（代码补全等）共用同一套选项</summary>
+    internal static readonly CSharpParseOptions ParseOptions = new(LanguageVersion.Latest);
+
+    internal static readonly CSharpCompilationOptions CompilationOptions = new CSharpCompilationOptions(OutputKind.WindowsApplication)
+        .WithOptimizationLevel(OptimizationLevel.Debug)
+        .WithNullableContextOptions(NullableContextOptions.Disable)
+        .WithAllowUnsafe(false)
+        .WithConcurrentBuild(true);
+
     public static Result Compile(string projectDir)
     {
-        var parseOptions = new CSharpParseOptions(LanguageVersion.Latest);
+        var parseOptions = ParseOptions;
-        var trees = Directory.EnumerateFiles(projectDir, "*.cs", SearchOption.AllDirectories)
+        var trees = SourceFiles(projectDir)
-            .Where(path => !IsBuildOutput(projectDir, path))
-            .OrderBy(path => path, StringComparer.Ordinal)
             .Select(path => CSharpSyntaxTree.ParseText(
                 SourceText.From(File.ReadAllText(path), Encoding.UTF8),
                 parseOptions,
                 path: Path.GetRelativePath(projectDir, path)))
             .ToList();
 
-        var options = new CSharpCompilationOptions(OutputKind.WindowsApplication)
+        var compilation = CSharpCompilation.Create("StudentApp", trees, References.Value, CompilationOptions);
-            .WithOptimizationLevel(OptimizationLevel.Debug)
-            .WithNullableContextOptions(NullableContextOptions.Disable)
-            .WithAllowUnsafe(false)
-            .WithConcurrentBuild(true);
-
-        var compilation = CSharpCompilation.Create("StudentApp", trees, References.Value, options);
 
         using var peStream = new MemoryStream();
         using var pdbStream = new MemoryStream();
-        var emit = compilation.Emit(peStream, pdbStream,
+        // 编译改写后的代码（旧版线程 API 换成平台实现，DateTime.Now 换成虚拟时钟），API 检查仍针对学生写的原始代码
-            options: new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb));
+        var emit = PathRewriter.Rewrite(ClockRewriter.Rewrite(LegacyThreadRewriter.Rewrite(compilation))).Emit(peStream, pdbStream,
+            options: new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb),
+            manifestResources: EmptyControlResources(compilation));
+        var denied = ApiPolicy.Check(compilation).ToList();
 
         var diagnostics = new JsonArray();
-        foreach (var diagnostic in emit.Diagnostics
+        foreach (var diagnostic in emit.Diagnostics.Concat(denied)
                      .Where(d => d.Severity is DiagnosticSeverity.Error or DiagnosticSeverity.Warning)
                      .OrderBy(d => d.Severity == DiagnosticSeverity.Error ? 0 : 1))
         {
             diagnostics.Add(ToJson(diagnostic));
         }
-        return new Result(emit.Success, peStream.ToArray(), pdbStream.ToArray(), diagnostics);
+        return new Result(emit.Success && denied.Count == 0, peStream.ToArray(), pdbStream.ToArray(), diagnostics);
     }
 
-    private static JsonObject ToJson(Diagnostic diagnostic)
+    private static readonly Lazy<byte[]> EmptyResources = new(() =>
+    {
+        var stream = new MemoryStream();
+        using (var writer = new System.Resources.ResourceWriter(stream)) writer.Generate();
+        return stream.ToArray();
+    });
+
+    /// <summary>
+    /// 给学生工程里的每个窗体、控件类嵌一份空的 .resources：VS 生成的 Designer.cs 会用
+    /// ComponentResourceManager(typeof(窗体)).GetObject("…OcxState") 读窗体的 .resx（如 Windows Media Player 控件），
+    /// 平台没有 .resx，有了空资源时取到 null，而不是报"找不到资源"。
+    /// </summary>
+    private static List<ResourceDescription> EmptyControlResources(CSharpCompilation compilation)
+    {
+        var control = compilation.GetTypeByMetadataName("System.Windows.Forms.Control");
+        var resources = new List<ResourceDescription>();
+        if (control == null) return resources;
+        var names = new HashSet<string>();
+        foreach (var tree in compilation.SyntaxTrees)
+        {
+            var model = compilation.GetSemanticModel(tree);
+            foreach (var declaration in tree.GetRoot().DescendantNodes().OfType<Microsoft.CodeAnalysis.CSharp.Syntax.ClassDeclarationSyntax>())
+            {
+                if (model.GetDeclaredSymbol(declaration) is not { } type) continue;
+                var derives = false;
+                for (var t = type.BaseType; t != null && !derives; t = t.BaseType) derives = SymbolEqualityComparer.Default.Equals(t, control);
+                var name = type.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat).Replace("global::", "") + ".resources";
+                if (derives && names.Add(name)) resources.Add(new ResourceDescription(name, () => new MemoryStream(EmptyResources.Value), isPublic: true));
+            }
+        }
+        return resources;
+    }
+
+    internal static JsonObject ToJson(Diagnostic diagnostic)
     {
         var span = diagnostic.Location.GetMappedLineSpan();
         var message = diagnostic.GetMessage(Chinese);
@@ -84,6 +121,12 @@ internal static class StudentCompiler
         return json;
     }
 
+    /// <summary>学生工程里的源文件（不含 bin、obj 下的），按路径排序</summary>
+    internal static IEnumerable<string> SourceFiles(string projectDir) =>
+        Directory.EnumerateFiles(projectDir, "*.cs", SearchOption.AllDirectories)
+            .Where(path => !IsBuildOutput(projectDir, path))
+            .OrderBy(path => path, StringComparer.Ordinal);
+
     private static bool IsBuildOutput(string projectDir, string path)
     {
         var relative = Path.GetRelativePath(projectDir, path).Replace('\\', '/');
@@ -91,7 +134,7 @@ internal static class StudentCompiler
     }
 
     /// <summary>学生代码可引用的程序集：.NET 框架（去掉冲突的门面）+ 仿真库</summary>
-    private static readonly Lazy<IReadOnlyList<MetadataReference>> References = new(() =>
+    internal static readonly Lazy<IReadOnlyList<MetadataReference>> References = new(() =>
     {
         var frameworkDir = Path.GetDirectoryName(typeof(object).Assembly.Location)!;
         var framework = Directory.EnumerateFiles(frameworkDir, "*.dll")

runtime/Sim.Runner/StudentProgramHost.cs

@@ -27,13 +27,22 @@ internal static class StudentProgramHost
         Console.SetOut(console);
         Console.SetIn(TextReader.Null); // 标准输入用于协议，学生的 Console.ReadLine 读不到内容
 
-        // 和中文 Windows 一致：DateTime.ToString() 等按 zh-CN 格式输出
+        // 和中文 Windows 一致：DateTime.ToString() 等按 zh-CN 格式输出。
-        var zhCN = CultureInfo.GetCultureInfo("zh-CN");
+        // Linux 上的区域数据把时间写成 09:05:03，中文 Windows 是 9:05:03（书上的截图也是）；长日期后面多了星期（2024年1月16日星期二），
+        // 中文 Windows 的长日期不带星期（日期选择框的长日期格式窄，带上星期会被截掉）。这里都改成 Windows 的写法
+        var zhCN = (CultureInfo)CultureInfo.GetCultureInfo("zh-CN").Clone();
+        zhCN.DateTimeFormat.LongTimePattern = "H:mm:ss";
+        zhCN.DateTimeFormat.ShortTimePattern = "H:mm";
+        zhCN.DateTimeFormat.LongDatePattern = "yyyy'年'M'月'd'日'";
+        zhCN.DateTimeFormat.FullDateTimePattern = "yyyy'年'M'月'd'日' H:mm:ss";
+        zhCN = CultureInfo.ReadOnly(zhCN);
         CultureInfo.DefaultThreadCurrentCulture = zhCN;
         CultureInfo.DefaultThreadCurrentUICulture = zhCN;
         CultureInfo.CurrentCulture = zhCN;
         CultureInfo.CurrentUICulture = zhCN;
 
+        UseWritableBaseDirectory(dir);
+
         var assembly = AssemblyLoadContext.Default.LoadFromStream(
             new MemoryStream(File.ReadAllBytes(Path.Combine(dir, CompileServer.AssemblyFile))),
             new MemoryStream(File.ReadAllBytes(Path.Combine(dir, CompileServer.PdbFile))));
@@ -81,6 +90,31 @@ internal static class StudentProgramHost
         return 0;
     }
 
+    /// <summary>
+    /// 学生程序的"程序所在目录"：和在 VS 里按 F5 一样是工程下的 bin/Debug/，也是当前目录，可以写文件
+    /// （教材把摄像头照片存到 AppDomain.CurrentDomain.BaseDirectory + "Camera/"）。
+    /// 沙箱里工程目录只读，改用沙箱自己的临时目录；两种情况下文件都在程序结束后清掉。
+    /// </summary>
+    private static void UseWritableBaseDirectory(string projectDir)
+    {
+        string baseDir;
+        try
+        {
+            baseDir = Directory.CreateDirectory(Path.Combine(projectDir, "bin", "Debug")).FullName;
+        }
+        catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
+        {
+            baseDir = Directory.CreateDirectory(Path.Combine(Path.GetTempPath(), "StudentApp", "bin", "Debug")).FullName;
+        }
+        baseDir = Path.TrimEndingDirectorySeparator(baseDir) + Path.DirectorySeparatorChar;
+        // 程序目录下的 Resources 文件夹指向素材库：教材用 BaseDirectory + "//Resources//ring.mp3" 播放铃声
+        var resources = Path.Combine(baseDir, "Resources");
+        if (!Path.Exists(resources)) Directory.CreateSymbolicLink(resources, ProjectResources.Directory);
+        AppContext.SetData("APP_CONTEXT_BASE_DIRECTORY", baseDir);
+        Directory.SetCurrentDirectory(baseDir);
+        SimHost.AppBaseDirectory = baseDir;
+    }
+
     /// <summary>读取浏览器发来的操作，排队到界面线程执行</summary>
     private static void ReadActions()
     {

runtime/Sim.Runner/ZipWriter.cs

@@ -0,0 +1,155 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Text;
+
+namespace Sim.Runner;
+
+/// <summary>
+/// 写 zip 文件。文件名照中文 Windows 的习惯用 GBK 编码（资源管理器自带的解压、老版本的压缩软件都按 GBK 读，
+/// 用 UTF-8 时 Windows 7 等会显示乱码），另附 Info-ZIP 的 Unicode 文件名扩展字段（0x7075），
+/// 7-Zip、Linux 的 unzip 等认这个字段的软件在别的语言的系统上也能显示正确。
+/// GBK 表示不了的文件名改用 UTF-8 并设置 UTF-8 标志位。
+/// </summary>
+internal sealed class ZipWriter
+{
+    private static readonly Encoding Gbk;
+    private static readonly uint[] CrcTable = new uint[256];
+
+    static ZipWriter()
+    {
+        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+        Gbk = Encoding.GetEncoding(936, EncoderFallback.ExceptionFallback, DecoderFallback.ExceptionFallback);
+        for (uint n = 0; n < 256; n++)
+        {
+            var c = n;
+            for (var k = 0; k < 8; k++) c = (c & 1) != 0 ? 0xEDB88320 ^ (c >> 1) : c >> 1;
+            CrcTable[n] = c;
+        }
+    }
+
+    private sealed record Entry(byte[] Name, byte[] Extra, ushort Flags, ushort Method, uint Crc, uint CompressedSize, uint Size, uint Offset);
+
+    private readonly MemoryStream output = new();
+    private readonly List<Entry> entries = new();
+    private readonly ushort dosTime;
+    private readonly ushort dosDate;
+
+    /// <param name="time">文件的修改时间（机房电脑上解压后看到的时间）</param>
+    public ZipWriter(DateTime time)
+    {
+        dosTime = (ushort)((time.Hour << 11) | (time.Minute << 5) | (time.Second / 2));
+        dosDate = (ushort)(((time.Year - 1980) << 9) | (time.Month << 5) | time.Day);
+    }
+
+    /// <summary>添加文件，path 用 / 分隔</summary>
+    public void Add(string path, byte[] data)
+    {
+        byte[] name;
+        byte[] extra = Array.Empty<byte>();
+        ushort flags = 0;
+        try
+        {
+            name = Gbk.GetBytes(path);
+            var utf8 = Encoding.UTF8.GetBytes(path);
+            if (utf8.Length != name.Length || !utf8.AsSpan().SequenceEqual(name))
+            {
+                // Unicode Path Extra Field：版本 1、GBK 文件名的 CRC、UTF-8 文件名
+                extra = new byte[4 + 1 + 4 + utf8.Length];
+                BitConverter.TryWriteBytes(extra.AsSpan(0), (ushort)0x7075);
+                BitConverter.TryWriteBytes(extra.AsSpan(2), (ushort)(1 + 4 + utf8.Length));
+                extra[4] = 1;
+                BitConverter.TryWriteBytes(extra.AsSpan(5), Crc32(name));
+                utf8.CopyTo(extra, 9);
+            }
+        }
+        catch (EncoderFallbackException)
+        {
+            name = Encoding.UTF8.GetBytes(path);
+            flags = 1 << 11;
+        }
+
+        var crc = Crc32(data);
+        var compressed = Deflate(data);
+        var method = (ushort)8;
+        if (compressed.Length >= data.Length)
+        {
+            compressed = data;
+            method = 0;
+        }
+
+        var entry = new Entry(name, extra, flags, method, crc, (uint)compressed.Length, (uint)data.Length, (uint)output.Position);
+        entries.Add(entry);
+        using var w = new BinaryWriter(output, Encoding.UTF8, leaveOpen: true);
+        w.Write(0x04034b50u);
+        w.Write((ushort)20);
+        w.Write(entry.Flags);
+        w.Write(entry.Method);
+        w.Write(dosTime);
+        w.Write(dosDate);
+        w.Write(entry.Crc);
+        w.Write(entry.CompressedSize);
+        w.Write(entry.Size);
+        w.Write((ushort)entry.Name.Length);
+        w.Write((ushort)entry.Extra.Length);
+        w.Write(entry.Name);
+        w.Write(entry.Extra);
+        w.Write(compressed);
+    }
+
+    /// <summary>写中央目录，返回整个 zip</summary>
+    public byte[] Finish()
+    {
+        var start = (uint)output.Position;
+        using (var w = new BinaryWriter(output, Encoding.UTF8, leaveOpen: true))
+        {
+            foreach (var e in entries)
+            {
+                w.Write(0x02014b50u);
+                w.Write((ushort)20); // 由 MS-DOS 兼容的系统生成：解压时不设置 Unix 权限
+                w.Write((ushort)20);
+                w.Write(e.Flags);
+                w.Write(e.Method);
+                w.Write(dosTime);
+                w.Write(dosDate);
+                w.Write(e.Crc);
+                w.Write(e.CompressedSize);
+                w.Write(e.Size);
+                w.Write((ushort)e.Name.Length);
+                w.Write((ushort)e.Extra.Length);
+                w.Write((ushort)0); // 注释长度
+                w.Write((ushort)0); // 磁盘号
+                w.Write((ushort)0); // 内部属性
+                w.Write(0u);        // 外部属性
+                w.Write(e.Offset);
+                w.Write(e.Name);
+                w.Write(e.Extra);
+            }
+            var size = (uint)output.Position - start;
+            w.Write(0x06054b50u);
+            w.Write((ushort)0);
+            w.Write((ushort)0);
+            w.Write((ushort)entries.Count);
+            w.Write((ushort)entries.Count);
+            w.Write(size);
+            w.Write(start);
+            w.Write((ushort)0);
+        }
+        return output.ToArray();
+    }
+
+    private static byte[] Deflate(byte[] data)
+    {
+        using var stream = new MemoryStream();
+        using (var deflate = new DeflateStream(stream, CompressionLevel.Optimal, leaveOpen: true)) deflate.Write(data);
+        return stream.ToArray();
+    }
+
+    private static uint Crc32(byte[] data)
+    {
+        var c = 0xFFFFFFFFu;
+        foreach (var b in data) c = CrcTable[(c ^ b) & 0xFF] ^ (c >> 8);
+        return c ^ 0xFFFFFFFFu;
+    }
+}

runtime/Sim.WinForms/Drawing/Graphics.cs

@@ -0,0 +1,14 @@
+namespace System.Drawing;
+
+/// <summary>
+/// 绘图面。平台的控件由浏览器绘制，学生程序不能自己画（没有 DrawLine 等方法）；
+/// 只为让 VS 生成的空 Paint 事件处理程序（panel1_Paint）能编译。
+/// </summary>
+public sealed class Graphics : IDisposable
+{
+    private Graphics()
+    {
+    }
+
+    public void Dispose() => GC.SuppressFinalize(this);
+}

runtime/Sim.WinForms/Drawing/Image.cs

@@ -0,0 +1,105 @@
+using System.ComponentModel;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using Sim.Host;
+
+namespace System.Drawing;
+
+/// <summary>
+/// 图片。System.Drawing 在 Linux 上不受支持，这里只保存图片文件的原始数据（JPEG、PNG、GIF、BMP）和尺寸：
+/// 能显示在 PictureBox 上、保存成文件、从文件或流读回，不能逐像素绘制。
+/// </summary>
+public abstract class Image : IDisposable, ICloneable
+{
+    private string? _simKey;
+
+    private protected Image(byte[] data)
+    {
+        Data = data;
+        (RawFormat, Width, Height) = ReadHeader(data) ?? throw new ArgumentException("参数无效：不是 JPEG、PNG、GIF 或 BMP 格式的图片。");
+    }
+
+    internal byte[] Data { get; }
+
+    public int Width { get; }
+    public int Height { get; }
+    public Size Size => new(Width, Height);
+    public ImageFormat RawFormat { get; }
+    public object? Tag { get; set; }
+
+    /// <summary>平台内部使用：图片内容的哈希，浏览器按它缓存图片，同一张图只传一次</summary>
+    [EditorBrowsable(EditorBrowsableState.Never)]
+    public string SimKey => _simKey ??= Convert.ToHexString(SHA1.HashData(Data)).ToLowerInvariant();
+
+    internal string MimeType => RawFormat.MimeType;
+
+    public static Image FromFile(string filename) => new Bitmap(filename);
+
+    public static Image FromStream(Stream stream) => new Bitmap(stream);
+
+    public void Save(string filename) => Save(filename, RawFormat);
+
+    /// <summary>按原格式写出图片数据（不做格式转换）。目录不存在时和 GDI+ 一样报"一般性错误"</summary>
+    public void Save(string filename, ImageFormat format)
+    {
+        try
+        {
+            File.WriteAllBytes(filename, Data);
+        }
+        catch (DirectoryNotFoundException)
+        {
+            throw new ExternalException("GDI+ 中发生一般性错误。（保存图片的文件夹不存在，先用 Directory.CreateDirectory 创建）");
+        }
+        SimHost.ImageSaved(Path.GetFullPath(filename), this);
+    }
+
+    public void Save(Stream stream, ImageFormat format) => stream.Write(Data, 0, Data.Length);
+
+    public object Clone() => new Bitmap(this);
+
+    public void Dispose() => GC.SuppressFinalize(this);
+
+    private static (ImageFormat, int, int)? ReadHeader(byte[] d)
+    {
+        if (d.Length >= 24 && d[0] == 0x89 && d[1] == 'P' && d[2] == 'N' && d[3] == 'G')
+            return (ImageFormat.Png, BigEndian(d, 16), BigEndian(d, 20));
+        if (d.Length >= 10 && d[0] == 'G' && d[1] == 'I' && d[2] == 'F')
+            return (ImageFormat.Gif, d[6] | d[7] << 8, d[8] | d[9] << 8);
+        if (d.Length >= 26 && d[0] == 'B' && d[1] == 'M')
+            return (ImageFormat.Bmp, BitConverter.ToInt32(d, 18), Math.Abs(BitConverter.ToInt32(d, 22)));
+        if (d.Length >= 4 && d[0] == 0xFF && d[1] == 0xD8)
+        {
+            // 依次跳过各段，找到记录尺寸的 SOF 段
+            var i = 2;
+            while (i + 9 < d.Length && d[i] == 0xFF)
+            {
+                var marker = d[i + 1];
+                var length = d[i + 2] << 8 | d[i + 3];
+                if (marker is >= 0xC0 and <= 0xCF and not 0xC4 and not 0xC8 and not 0xCC)
+                    return (ImageFormat.Jpeg, d[i + 7] << 8 | d[i + 8], d[i + 5] << 8 | d[i + 6]);
+                i += 2 + length;
+            }
+        }
+        return null;
+    }
+
+    private static int BigEndian(byte[] d, int offset) => d[offset] << 24 | d[offset + 1] << 16 | d[offset + 2] << 8 | d[offset + 3];
+}
+
+public sealed class Bitmap : Image
+{
+    public Bitmap(string filename) : base(File.ReadAllBytes(filename)) { }
+
+    public Bitmap(Stream stream) : base(ReadAll(stream)) { }
+
+    public Bitmap(Image original) : base(original.Data) { }
+
+    private static byte[] ReadAll(Stream stream)
+    {
+        using var buffer = new MemoryStream();
+        stream.CopyTo(buffer);
+        return buffer.ToArray();
+    }
+}