feat: 加 prompt-stats 脚本，对比某天前后学生和 AI 对话的情况

轮数分布、层级分布、第 2 轮起的 L1、只粘贴外部代码的比例、“出问题了”“帮我写清楚”
和交作品反思的使用情况。只读。

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

CLAUDE.md

@@ -15,11 +15,11 @@ The backend was rewritten from Django in 2026-10 to cut memory use (~25 MB vs. 1
   - `src/app.ts` — mounts routers under `/api/<prefix>`, CORS, auth middleware, error → `{ detail }` JSON (ninja-compatible; validation errors are 422)
   - `src/db.ts` — schema (`CREATE TABLE IF NOT EXISTS`, same DDL as Django), `all/get/run/tx` helpers using `$name` params, time (`now()`, `iso()`) and UUID (`uuidHex()`, `uuidOut()`) conversions
   - `src/auth.ts` — Django-compatible password hashing; JWT login, no cookies: `POST /account/login` returns a 15-min HS256 `access_token` (sent as `Authorization: Bearer`, signed with `JWT_SECRET`, random per process if unset) and a 14-day opaque `refresh_token` (only its sha256 is stored, in `auth_refresh_token`; `POST /account/refresh` trades it for a new access token, logout / password change / deactivation delete it). An invalid or expired Bearer token is a 401 even on public endpoints so the client knows to refresh. `requireUser/requireAdmin/requireSuper` (401 / 403)
-  - `src/routes/` — `account`, `tasks` (tutorial / challenge / creation), `files` (task assets + image upload), `submission`, `showcase` (mounted under `/submission/showcase`), `review` (mounted under `/submission/review`: teacher class × task wall, students' same-class peer works), `prompt`
-  - Who can read a submission (`canView` in `routes/submission.ts`): staff, the owner, anyone if it's in the showcase, or a same-class student who has submitted the same task. Students' `GET /submission/` only lists their own. Peer works and the random-rating item are anonymous until the viewer rates them (`PUT /:id/score` returns the author). `flag` now only carries `present` (teacher's in-class presentation queue); the old four colors are no longer shown
-  - `src/services/` — `score.ts` (rating weights super×0.5, admin×0.3, normal×0.2, then Bayesian smoothing with C=3 and zones), `gradebook.ts`, `llm.ts` (OpenAI-compatible streaming via fetch; DeepSeek default, ARK for doubao models; chat context is the last 20 messages with older code blocks elided), `classifier.ts` (Bloom-level L1–L6 prompt tagging, runs in background), `cascade.ts` (Django's CASCADE deletes done by hand, plus the shared delete rules: `hasRatingsOrAwards`, `deleteRound`), `pyround.ts` (`pyRound`/`pySum` reproduce Python's `round()` and `sum()` so scores match the old system bit-for-bit)
+  - `src/routes/` — `account`, `tasks` (tutorial / challenge / creation), `files` (task assets + image upload), `submission`, `showcase` (mounted under `/submission/showcase`), `review` (mounted under `/submission/review`: teacher class × task wall — no `classname` means all classes —, students' peer works with `scope=class|all`), `prompt`
+  - Who can read a submission (`canView` in `routes/submission.ts`): staff, the owner, anyone if it's in the showcase, or any student who has submitted the same task (any class). Students' `GET /submission/` only lists their own. Peer works and the random-rating item are anonymous until the viewer rates them (`PUT /:id/score` returns the author). `flag` now only carries `present` (teacher's in-class presentation queue); the old four colors are no longer shown
+  - `src/services/` — `score.ts` (rating weights super×0.5, admin×0.3, normal×0.2, then Bayesian smoothing with C=3 and zones), `gradebook.ts`, `llm.ts` (OpenAI-compatible streaming via fetch; DeepSeek default, ARK for doubao models; chat context is the last 20 messages with code kept only in the newest reply that has code. Chat replies are written as **做了什么 / 我替你定的 / 想一想** — the decisions the AI made for the student and one open question, to prompt the next round; a reply to a plain question has no code and the WebSocket sends `code: null`. For challenges the AI also gets the task brief (`challengeBrief`) as a checklist only (`BRIEF_RULES`): it builds just what the student asked for and asks about one missing requirement in “想一想”; creations get no brief. The “帮我写清楚” coach gets the task brief, recent prompts and the last AI explanation from `guidanceContext` in `services/prompt.ts`, and judges by what the student added beyond the brief, like the classifier), `classifier.ts` (Bloom-level L1–L6 prompt tagging, runs in background; the model sees the task brief and the previous prompt, temperature 0, prompts under 4 chars get no level), `cascade.ts` (Django's CASCADE deletes done by hand, plus the shared delete rules: `hasRatingsOrAwards`, `deleteRound`), `pyround.ts` (`pyRound`/`pySum` reproduce Python's `round()` and `sum()` so scores match the old system bit-for-bit)
   - `src/ws.ts` — `/ws/prompt/<task_id>/?token=<access_token>` (code generation chat; the AI context and the page's chat include `conversation`, `edit` and `manual` messages) and `/ws/guidance/<task_id>/?token=...` (prompt coaching); one message per connection at a time (a message sent while the AI is still replying gets an error, payloads capped at 64 KB); on disconnect the pending user message is deleted and the LLM request aborted
-  - `scripts/` — one-off CLIs: `create-superuser.ts`, `classify-prompts.ts`, `recalculate-scores.ts`
+  - `scripts/` — one-off CLIs: `create-superuser.ts`, `classify-prompts.ts`, `recalculate-scores.ts`, `prompt-stats.ts` (read-only before/after comparison of AI-chat behavior: rounds, levels, external-code share, “出问题了” / reflection usage)
   - Roles: `super`, `admin`, `normal`. Task model is multi-table: `task_task` + one of `task_tutorial` / `task_challenge` / `task_creation` (`task_ptr_id`)
 
 - **`client/`** — Vue 3 + TypeScript SPA built with **Vite**; Bun is the package manager and runtime (no Node/npm)
@@ -30,9 +30,9 @@ The backend was rewritten from Django in 2026-10 to cut memory use (~25 MB vs. 1
   - `src/router.ts` — Vue Router; `meta.auth` needs login, `meta.role` (`staff` = admin+super, `super`) is checked in the guard after `store/session.loadUser()`, `meta.bare` pages render without the top bar
   - `src/theme.ts` — the only place colors are defined: one palette (light + dark values) becomes both `--wp-*` CSS variables and Naive UI `themeOverrides`; use `var(--wp-...)` in styles, never hard-coded colors (iframes stay white: they show students' pages). No `color-mix()` (Chrome 105). `store/theme.ts` holds the mode (auto / light / dark, toggled in the top bar) and sets `data-theme` on `<html>`; `styles/dark-content.css` is generated from the GitHub dark markdown and highlight.js styles (selectors prefixed with `:root[data-theme="dark"]`); CodeMirror uses One Dark highlighting in dark mode
   - `src/icons.ts` — `<Icon icon="lucide:name" />` renders bundled `lucide-vue-next` icons (works offline); register new names in its map. Fonts are bundled too (`@fontsource/jetbrains-mono`)
-  - `components/workbench/Workbench.vue` — shared challenge / creation page: left = brief + AI chat (`PromptPanel`), right = preview / code (`CodeTabs`) + `VersionBar`. Every assistant message with code is a version; hand edits and pasted external-AI code are saved as versions via `POST /prompt/versions` (`source` `edit` / `manual`, stored as a user+assistant pair). Challenges are submitted only when the student clicks “交这一版” (`POST /submission/` with `message_id`), never automatically. Editor code is per task (`composables/useTaskCode.ts`, localStorage `web-code:<user>:<task>`); the tutorial page edits the shared `store/editors.ts` refs but `Workspace.vue` saves them under the same per-task key and `TutorialContent` restores them (example code only the first time)
+  - `components/workbench/Workbench.vue` — shared challenge / creation page: left = brief + AI chat (`PromptPanel`), right = preview / code (`CodeTabs`) + `VersionBar`. Every assistant message with code is a version; hand edits and pasted external-AI code are saved as versions via `POST /prompt/versions` (`source` `edit` / `manual`, stored as a user+assistant pair). Challenges are submitted only when the student clicks “交这一版” (`POST /submission/` with `message_id`), never automatically; `SubmitModal` first asks an optional one-line reflection (最满意的改动和理由), stored in `submission_reflection` (`ON DELETE CASCADE`, returned by `GET /submission/:id` only to staff and the author, shown as “学生说” in `ReviewPanel`). In `PromptPanel`, “出问题了” is a three-field form (做了什么 / 想看到什么 / 实际看到了什么) joined into one prompt; a short vague complaint (“还是不行”) gets a one-time hint offering it. Pasted external-AI prompts need at least 8 characters Editor code is per task (`composables/useTaskCode.ts`, localStorage `web-code:<user>:<task>`); the tutorial page edits the shared `store/editors.ts` refs but `Workspace.vue` saves them under the same per-task key and `TutorialContent` restores them (example code only the first time)
   - `pages/ChallengeHome.vue` — challenge list page; `pages/TaskEditor.vue` (prop `kind`) is the single tutorial / challenge authoring page
-  - `pages/Review.vue` (“批改”, default teaching page) + `components/review/ReviewPanel.vue` (also opened from the gradebook) — keys: J/K next/prev student, 1–5 rate, P present; `components/review/PeersDrawer.vue` is the students' “同学作品”
+  - `pages/Review.vue` (“批改”, default teaching page) + `components/review/ReviewPanel.vue` (also opened from the gradebook) — opens as a large preview (wall hidden, Esc returns; “小面板” switches to a side panel, remembered); keys: J/K previous/next student (by key position), 1–5 rate, P present; “全部班级” groups the wall by class; `components/review/PeersDrawer.vue` is the students' “同学作品” (本班 / 全部班级)
   - `components/layout/AppShell.vue` — top bar for every page; `pages/Dashboard.vue` is the teaching sidebar (“教学”) under `/dashboard`
   - `src/store/` — Reactive state (plain Vue refs, not Vuex/Pinia); `prompt.ts` / `guidance.ts` own the WebSockets
   - `src/pages/`, `src/components/` — user management uses `components/dashboard/UserFormModal.vue` (there is no Django Admin anymore)
@@ -62,6 +62,7 @@ bun run typecheck
 bun scripts/create-superuser.ts <username> <password>
 bun scripts/classify-prompts.ts [--task-id N] [--force] [--dry-run]
 bun scripts/recalculate-scores.ts [--dry-run]
+bun scripts/prompt-stats.ts <split-date> [--from date] [--to date]   # dates in Beijing time
 ```
 Config comes from `server/.env` (see `server/.env.example`); dev DB is `server/data/db.sqlite3`, uploads go to the repo-root `media/`.
 

client/src/api.ts

@@ -17,7 +17,6 @@ import type {
   AwardItemManageOut,
   GradebookOut,
   GradebookQuery,
-  ShowcaseSubmissionLookupOut,
   ShowcaseDetail,
   PromptRound,
   RandomRatingItem,
@@ -265,6 +264,7 @@ export const Submission = {
       prompt?: string
     },
     messageId?: number,
+    reflection?: string,
   ) {
     const { prompt, ...rest } = code
     const data = {
@@ -272,6 +272,7 @@ export const Submission = {
       ...rest,
       prompt: prompt || null,
       message_id: messageId ?? null,
+      reflection: reflection || null,
     }
     const res = await http.post("/submission/", data)
     return res.data
@@ -465,18 +466,20 @@ export const Review = {
   async options(): Promise<ReviewOptions> {
     return (await http.get("/submission/review/options")).data
   },
-  async progress(classname: string): Promise<ReviewProgress> {
+  // classname 不传就是全部班级
+  async progress(classname?: string): Promise<ReviewProgress> {
     return (await http.get("/submission/review/progress", { params: { classname } })).data
   },
-  async classWall(classname: string, taskId: number): Promise<ReviewStudent[]> {
+  async classWall(classname: string | undefined, taskId: number): Promise<ReviewStudent[]> {
     return (
       await http.get("/submission/review/class", {
         params: { classname, task_id: taskId },
       })
     ).data
   },
-  async peers(taskId: number): Promise<PeerWorks> {
-    return (await http.get(`/submission/review/peers/${taskId}`)).data
+  // scope：class 只看本班，all 看所有班
+  async peers(taskId: number, scope: "class" | "all" = "class"): Promise<PeerWorks> {
+    return (await http.get(`/submission/review/peers/${taskId}`, { params: { scope } })).data
   },
 }
 
@@ -517,15 +520,6 @@ export const Showcase = {
     return res.data
   },
 
-  async findSubmissionForAward(
-    submissionId: string,
-  ): Promise<ShowcaseSubmissionLookupOut> {
-    const res = await http.get(
-      `/submission/showcase/manage/submissions/${submissionId}`,
-    )
-    return res.data
-  },
-
   async addAwardItem(
     id: number,
     payload: AwardItemIn,

client/src/components/Login.vue

@@ -2,12 +2,13 @@
   <n-modal
     preset="card"
     title="登录"
-    style="width: 420px"
+    style="width: min(400px, 92vw)"
+    :bordered="false"
     v-model:show="loginModal"
   >
     <n-tabs v-model:value="activeTab" @update:value="onTabChange">
-      <n-tab-pane name="student" tab="学生登录">
-        <n-form>
+      <n-tab-pane name="student" tab="学生">
+        <n-form :show-feedback="false" class="form">
           <n-form-item label="班级">
             <n-select
               v-model:value="selectedClass"
@@ -21,37 +22,25 @@
             <n-select
               v-model:value="selectedUsername"
               :options="nameOptions"
-              placeholder="选择姓名"
+              filterable
+              :placeholder="selectedClass ? '选择或输入姓名' : '先选班级'"
               :loading="namesLoading"
               :disabled="!selectedClass || namesLoading"
+              @update:value="focusPassword"
             />
           </n-form-item>
           <n-form-item label="密码">
             <n-input
+              ref="studentPasswordRef"
               type="password"
+              show-password-on="click"
               v-model:value="studentPassword"
               name="password"
+              placeholder="输入密码，按 Enter 登录"
               @keyup.enter="submitStudent"
             />
           </n-form-item>
-          <n-alert
-            type="error"
-            v-if="classesError"
-            class="message"
-            title="加载班级列表失败，请刷新重试"
-          />
-          <n-alert
-            type="error"
-            v-if="namesError"
-            class="message"
-            title="加载姓名列表失败，请重新选择班级"
-          />
-          <n-alert
-            type="error"
-            v-if="studentError"
-            class="message"
-            :title="studentError"
-          />
+          <div v-if="studentError" class="error">{{ studentError }}</div>
           <n-button
             block
             type="primary"
@@ -61,28 +50,26 @@
           >
             登录
           </n-button>
+          <div class="note">忘了密码找老师重置</div>
         </n-form>
       </n-tab-pane>
 
-      <n-tab-pane name="admin" tab="管理员登录">
-        <n-form>
+      <n-tab-pane name="admin" tab="老师">
+        <n-form :show-feedback="false" class="form">
           <n-form-item label="用户名">
-            <n-input v-model:value="adminName" name="username" />
+            <n-input v-model:value="adminName" name="username" placeholder="用户名" />
           </n-form-item>
           <n-form-item label="密码">
             <n-input
               type="password"
+              show-password-on="click"
               v-model:value="adminPassword"
               name="password"
+              placeholder="输入密码，按 Enter 登录"
               @keyup.enter="submitAdmin"
             />
           </n-form-item>
-          <n-alert
-            type="error"
-            v-if="adminError"
-            class="message"
-            :title="adminError"
-          />
+          <div v-if="adminError" class="error">{{ adminError }}</div>
           <n-button
             block
             type="primary"
@@ -99,14 +86,17 @@
 </template>
 
 <script lang="ts" setup>
-import { ref, computed, onMounted } from "vue"
+import { ref, computed, nextTick, onMounted } from "vue"
 import { Account } from "../api"
 import { loginModal } from "../store/modal"
 import { user } from "../store/user"
 import { router } from "../router"
 
-// Tab state
+// 机房的电脑一节课一个班轮流用：记住班级，不记姓名
+const CLASS_KEY = "login-class"
+
 const activeTab = ref("student")
+const studentPasswordRef = ref<{ focus: () => void } | null>(null)
 
 // Student tab state
 const selectedClass = ref<string | null>(null)
@@ -115,10 +105,8 @@ const studentPassword = ref("")
 const studentLoading = ref(false)
 const studentError = ref("")
 
-// Classes data
 const classes = ref<string[]>([])
 const classesLoading = ref(false)
-const classesError = ref(false)
 const classOptions = computed(() =>
   classes.value.map((c) => ({ label: c, value: c })),
 )
@@ -126,7 +114,6 @@ const classOptions = computed(() =>
 // Names data
 const names = ref<{ name: string; username: string }[]>([])
 const namesLoading = ref(false)
-const namesError = ref(false)
 const nameOptions = computed(() =>
   names.value.map((n) => ({ label: n.name, value: n.username })),
 )
@@ -137,28 +124,31 @@ const adminPassword = ref("")
 const adminLoading = ref(false)
 const adminError = ref("")
 
-// Load classes on mount (cached — not reloaded on tab switch)
+// 班级列表只在打开页面时取一次
 onMounted(async () => {
   classesLoading.value = true
-  classesError.value = false
   try {
     classes.value = await Account.listClasses()
   } catch {
-    classesError.value = true
+    studentError.value = "班级列表没加载出来，请刷新页面重试"
+    return
   } finally {
     classesLoading.value = false
   }
+  let saved: string | null = null
+  try {
+    saved = localStorage.getItem(CLASS_KEY)
+  } catch {}
+  if (saved && classes.value.includes(saved)) {
+    selectedClass.value = saved
+    onClassChange(saved)
+  }
 })
 
+// 换标签页时清掉输入的密码和错误；选好的班级和姓名留着
 function onTabChange() {
-  // Reset student tab state
-  selectedClass.value = null
-  selectedUsername.value = null
   studentPassword.value = ""
   studentError.value = ""
-  namesError.value = false
-  names.value = []
-  // Reset admin tab state
   adminName.value = ""
   adminPassword.value = ""
   adminError.value = ""
@@ -167,17 +157,24 @@ function onTabChange() {
 async function onClassChange(classname: string) {
   selectedUsername.value = null
   names.value = []
-  namesError.value = false
+  studentError.value = ""
+  try {
+    localStorage.setItem(CLASS_KEY, classname)
+  } catch {}
   namesLoading.value = true
   try {
     names.value = await Account.listNamesByClass(classname)
   } catch {
-    namesError.value = true
+    studentError.value = "姓名列表没加载出来，请重新选一次班级"
   } finally {
     namesLoading.value = false
   }
 }
 
+function focusPassword() {
+  nextTick(() => studentPasswordRef.value?.focus())
+}
+
 // 失败次数太多被暂时禁止登录时，显示服务端给的提示
 function loginError(err: any, fallback: string) {
   return err.response?.status === 429 ? err.response.data.detail : fallback
@@ -228,7 +225,24 @@ async function submitAdmin() {
 </script>
 
 <style scoped>
-.message {
-  margin-bottom: 12px;
+.form {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  padding-top: 4px;
+}
+
+.error {
+  padding: 6px 10px;
+  border-radius: 6px;
+  font-size: 13px;
+  color: var(--wp-bad);
+  background: var(--wp-bad-soft);
+}
+
+.note {
+  font-size: 12px;
+  text-align: center;
+  color: var(--wp-faint);
 }
 </style>

client/src/components/ai/GuidancePanel.vue

@@ -2,82 +2,74 @@
   <n-modal
     :show="isOpen"
     preset="card"
-    title="调教提示词"
-    style="width: min(560px, 92vw)"
+    title="帮我把要求写清楚"
+    style="width: min(640px, 92vw)"
     :mask-closable="!streaming"
     @update:show="onModalClose"
   >
-    <div class="guidance-body">
-      <div class="guidance-messages" ref="messagesRef">
+    <p class="intro">
+      AI 会看看你的要求哪里还不够清楚，给你提建议。照着建议改好下面的要求，再让它看看；
+      觉得可以了就点“用这段生成网页”。
+    </p>
+
+    <div ref="messagesRef" class="messages">
+      <div v-for="(msg, i) in messages" :key="msg.id ?? i" :class="['msg', msg.role]">
+        <div class="who">
+          {{ msg.role === "user" ? `你的要求 · 第 ${versionOf(i)} 版` : "AI 的建议" }}
+        </div>
+        <div class="content markdown-body" v-html="renderMarkdown(msg.content)"></div>
+      </div>
+
+      <div v-if="streaming" class="msg assistant">
+        <div class="who">AI 的建议</div>
+        <div v-if="!displayStreamingContent" class="typing">
+          <span></span><span></span><span></span>
+        </div>
         <div
-          v-for="(msg, i) in messages"
-          :key="msg.id ?? i"
-          class="guidance-msg"
-          :class="msg.role"
-        >
-          <div class="msg-role">{{ msg.role === "user" ? "你" : "AI" }}</div>
-          <div class="msg-content" v-html="renderMarkdown(msg.content)"></div>
-        </div>
-
-        <div v-if="streaming" class="guidance-msg assistant">
-          <div class="msg-role">AI</div>
-          <div v-if="!displayStreamingContent" class="typing-indicator">
-            <span></span><span></span><span></span>
-          </div>
-          <div
-            v-else
-            class="msg-content"
-            v-html="renderMarkdown(displayStreamingContent)"
-          ></div>
-        </div>
+          v-else
+          class="content markdown-body"
+          v-html="renderMarkdown(displayStreamingContent)"
+        ></div>
       </div>
+    </div>
 
-      <div v-if="isReady" class="ready-hint">
-        <Icon icon="lucide:check-circle" :width="16" />
-        提示词已优化，可以生成代码了！
-      </div>
+    <div v-if="isReady" class="ready">
+      <Icon icon="lucide:check-circle" :width="16" />
+      AI 觉得要求已经写清楚了，可以生成网页了
+    </div>
 
-      <div class="guidance-input">
-        <n-input
-          v-model:value="draftPrompt"
-          type="textarea"
-          :autosize="{ minRows: 2, maxRows: 5 }"
-          placeholder="修改你的提示词后发送..."
-          :disabled="streaming"
-          @keydown.enter.exact.prevent="send"
-        />
-        <n-flex justify="space-between" align="center" style="margin-top: 8px">
-          <div>
-            <n-button
-              v-if="streaming"
-              type="error"
-              size="small"
-              @click="stopGuidance"
-            >
-              停止
-            </n-button>
-            <n-button
-              v-else
-              size="small"
-              :disabled="!draftPrompt.trim() || !connected"
-              @click="send"
-            >
-              发送
-            </n-button>
-          </div>
+    <div class="draft">
+      <div class="draft-label">你的要求</div>
+      <n-input
+        v-model:value="draftPrompt"
+        type="textarea"
+        :autosize="{ minRows: 3, maxRows: 6 }"
+        placeholder="按 AI 的建议把要求改得更具体：要什么内容、什么颜色和布局、点了以后会怎样……"
+        :disabled="streaming"
+        @keydown.enter.exact.prevent="send"
+      />
+      <n-flex justify="space-between" align="center" class="draft-actions">
+        <n-flex align="center" :size="8">
+          <n-button v-if="streaming" size="small" @click="stopGuidance">停止</n-button>
           <n-button
-            :type="isReady ? 'primary' : 'default'"
+            v-else
             size="small"
-            :disabled="!draftPrompt.trim()"
-            @click="generate"
+            :disabled="!draftPrompt.trim() || !connected || draftPrompt.trim() === lastSent"
+            @click="send"
           >
-            <template #icon>
-              <Icon icon="lucide:play" :width="14" />
-            </template>
-            生成代码
+            让 AI 再看看
           </n-button>
+          <span class="muted">Enter 发送，Shift + Enter 换行</span>
         </n-flex>
-      </div>
+        <n-button
+          :type="isReady ? 'primary' : 'default'"
+          :disabled="!draftPrompt.trim() || streaming"
+          @click="generate"
+        >
+          <template #icon><Icon icon="lucide:play" :width="14" /></template>
+          用这段生成网页
+        </n-button>
+      </n-flex>
     </div>
   </n-modal>
 </template>
@@ -106,13 +98,23 @@ const emit = defineEmits<{
 const draftPrompt = ref("")
 const messagesRef = ref<HTMLElement>()
 
+// 第几版要求：只数学生发的
+function versionOf(index: number) {
+  return messages.value.slice(0, index + 1).filter((m) => m.role === "user").length
+}
+
+// 没改过就不用再发一遍
+const lastSent = computed(
+  () => [...messages.value].reverse().find((m) => m.role === "user")?.content.trim() ?? "",
+)
+
 const displayStreamingContent = computed(() =>
   streamingContent.value.replace(/^\[READY\]\n?/, "")
 )
 
 function send() {
   const text = draftPrompt.value.trim()
-  if (!text || streaming.value) return
+  if (!text || streaming.value || text === lastSent.value) return
   sendGuidance(text)
 }
 
@@ -141,87 +143,113 @@ watch([() => messages.value.length, streamingContent], () => {
 </script>
 
 <style scoped>
-.guidance-body {
-  display: flex;
-  flex-direction: column;
-  gap: 12px;
+.intro {
+  margin: 0 0 12px;
+  font-size: 13px;
+  line-height: 1.7;
+  color: var(--wp-muted);
 }
 
-.guidance-messages {
-  min-height: 160px;
-  max-height: 360px;
+.messages {
+  min-height: 120px;
+  max-height: 45vh;
   overflow-y: auto;
   display: flex;
   flex-direction: column;
   gap: 12px;
+  padding-right: 4px;
 }
 
-.guidance-msg .msg-role {
-  font-size: 12px;
-  font-weight: bold;
+.who {
   margin-bottom: 4px;
+  font-size: 12px;
+  font-weight: 600;
   color: var(--wp-muted);
 }
 
-.guidance-msg.user .msg-role {
-  color: var(--wp-css);
-}
-
-.guidance-msg.assistant .msg-role {
+.msg.assistant .who {
   color: var(--wp-brand);
 }
 
-.guidance-msg.assistant .msg-content {
-  background: var(--wp-css-soft);
-  border-left: 3px solid var(--wp-css);
+.content {
   padding: 8px 12px;
-  border-radius: 0 6px 6px 0;
+  border-radius: 8px;
   font-size: 14px;
-  line-height: 1.6;
-}
-
-.guidance-msg.user .msg-content {
-  font-size: 14px;
-  line-height: 1.6;
+  line-height: 1.7;
   color: var(--wp-ink);
 }
 
-.msg-content :deep(p) {
-  margin: 0;
+.msg.user .content {
+  border: 1px solid var(--wp-line);
+  background: var(--wp-paper);
 }
 
-.ready-hint {
+.msg.assistant .content {
+  border-left: 3px solid var(--wp-brand);
+  border-radius: 0 8px 8px 0;
+  background: var(--wp-brand-soft);
+}
+
+.content :deep(p) {
+  margin: 0 0 6px;
+}
+
+.content :deep(:last-child) {
+  margin-bottom: 0;
+}
+
+.ready {
   display: flex;
   align-items: center;
   gap: 6px;
-  color: var(--wp-brand);
-  font-size: 13px;
-  font-weight: 500;
+  margin-top: 12px;
   padding: 6px 10px;
-  background: var(--wp-brand-soft);
   border-radius: 6px;
-  border: 1px solid var(--wp-brand-soft);
+  font-size: 13px;
+  color: var(--wp-brand);
+  background: var(--wp-brand-soft);
 }
 
-.typing-indicator {
+.draft {
+  margin-top: 14px;
+  padding-top: 12px;
+  border-top: 1px solid var(--wp-line);
+}
+
+.draft-label {
+  margin-bottom: 6px;
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.draft-actions {
+  margin-top: 8px;
+}
+
+.muted {
+  font-size: 12px;
+  color: var(--wp-faint);
+}
+
+.typing {
   display: flex;
   gap: 5px;
-  padding: 8px 0;
+  padding: 10px 12px;
 }
 
-.typing-indicator span {
+.typing span {
   width: 7px;
   height: 7px;
   border-radius: 50%;
-  background: var(--wp-css);
+  background: var(--wp-brand);
   animation: bounce 1.4s ease-in-out infinite;
 }
 
-.typing-indicator span:nth-child(2) {
+.typing span:nth-child(2) {
   animation-delay: 0.2s;
 }
 
-.typing-indicator span:nth-child(3) {
+.typing span:nth-child(3) {
   animation-delay: 0.4s;
 }
 

client/src/components/ai/PromptHistoryPanel.vue

@@ -1,143 +1,82 @@
 <template>
   <div class="history-panel">
-    <n-flex
-      class="history-toolbar"
-      align="center"
-      justify="space-between"
-      :wrap="false"
-    >
-      <n-text depth="3">共 {{ items.length }} 条历史对话</n-text>
+    <div class="toolbar">
+      <span class="muted">共 {{ items.length }} 轮 · 点一条就把那一版放回编辑器</span>
       <n-tooltip>
         <template #trigger>
-          <n-button
-            quaternary
-            circle
-            size="small"
-            :loading="loading"
-            aria-label="刷新历史对话"
-            @click="load(true)"
-          >
-            <template #icon>
-              <Icon icon="lucide:refresh-cw" />
-            </template>
+          <n-button quaternary size="small" :loading="loading" @click="load(true)">
+            <template #icon><Icon icon="lucide:refresh-cw" /></template>
           </n-button>
         </template>
-        刷新历史对话
+        刷新
       </n-tooltip>
-    </n-flex>
+    </div>
 
-    <n-spin v-if="loading" class="state" />
-    <n-empty
-      v-else-if="!items.length"
-      class="state"
-      description="暂无历史对话"
-    />
-    <n-scrollbar v-else class="history-scrollbar">
-      <n-flex vertical :size="12" class="history-list">
-        <n-card
-          v-for="(item, index) in items"
+    <n-spin v-if="loading && !items.length" class="state" />
+    <n-empty v-else-if="!items.length" class="state" description="还没有和 AI 对话过" />
+    <n-scrollbar v-else class="scroll">
+      <ol class="list">
+        <li
+          v-for="item in newestFirst"
           :key="item.assistant_message_id"
-          class="history-card"
-          :class="{
-            'is-selected':
-              selectedAssistantMessageId === item.assistant_message_id,
-          }"
-          size="small"
-          :bordered="true"
-          hoverable
-          :embedded="selectedAssistantMessageId === item.assistant_message_id"
-          :content-style="{ padding: 0 }"
+          :class="['item', { on: selectedAssistantMessageId === item.assistant_message_id }]"
           @click="selectItem(item)"
         >
-          <n-flex
-            class="history-main"
-            align="center"
-            justify="space-between"
-            :wrap="false"
-          >
-            <n-flex align="center" :wrap="false" :size="6">
-              <n-tag
-                round
-                size="small"
-                :bordered="false"
-                :type="
-                  selectedAssistantMessageId === item.assistant_message_id
-                    ? 'success'
-                    : 'default'
-                "
-              >
-                #{{ index + 1 }}
-              </n-tag>
-              <n-tag
-                size="small"
-                :type="item.source === 'edit' ? 'warning' : item.source === 'manual' ? 'info' : 'success'"
-              >
-                {{ sourceLabel(item.source) }}
-              </n-tag>
-            </n-flex>
-            <n-flex align="center" :wrap="false" :size="4">
-              <n-tag
-                v-if="selectedAssistantMessageId === item.assistant_message_id"
-                size="small"
-                type="success"
-                :bordered="false"
-              >
-                正在预览
-              </n-tag>
-              <n-text depth="3">
-                {{ parseTime(item.created, "YYYY-MM-DD HH:mm") }}
-              </n-text>
-              <n-tooltip placement="top">
-                <template #trigger>
-                  <n-button
-                    quaternary
-                    circle
-                    size="small"
-                    :loading="deletingId === item.assistant_message_id"
-                    :disabled="deletingId !== null"
-                    @click="deleteItem(item, $event)"
-                  >
-                    <template #icon>
-                      <Icon icon="lucide:trash-2" />
-                    </template>
-                  </n-button>
-                </template>
-                删除这条历史对话
-              </n-tooltip>
-            </n-flex>
-          </n-flex>
-          <div
-            class="prompt-markdown markdown-body"
-            v-html="renderMarkdown(item.prompt)"
-          />
-          <div class="thumbnail" aria-label="页面缩略图">
+          <div class="head">
+            <span class="num">{{ item.index }}</span>
+            <span :class="['src', `src-${item.source || 'conversation'}`]">
+              {{ sourceLabel(item.source) }}
+            </span>
+            <span v-if="item.prompt_level" class="level">{{ levelLabel(item.prompt_level) }}</span>
+            <span v-if="item.submission_id" class="submitted">交过</span>
+            <span class="time">{{ parseTime(item.created, "MM-DD HH:mm") }}</span>
+            <n-popconfirm @positive-click="deleteItem(item)">
+              <template #trigger>
+                <n-button
+                  quaternary
+                  size="tiny"
+                  class="del"
+                  :loading="deletingId === item.assistant_message_id"
+                  :disabled="deletingId !== null"
+                  @click.stop
+                >
+                  <template #icon><Icon icon="lucide:trash-2" :width="14" /></template>
+                </n-button>
+              </template>
+              <template v-if="item.submission_id">
+                这一版交过，删掉这轮对话后交的那一份也会一起删掉（有人评过分的删不了）。
+              </template>
+              <template v-else>删掉这一轮对话和它生成的网页？</template>
+            </n-popconfirm>
+          </div>
+          <div class="q markdown-body" v-html="renderMarkdown(item.prompt)"></div>
+          <div class="thumb">
             <iframe
               v-if="item.hasPage"
               title="页面缩略图"
               loading="lazy"
-              sandbox="allow-scripts"
-              referrerpolicy="no-referrer"
+              :sandbox="PREVIEW_SANDBOX"
               tabindex="-1"
               :srcdoc="item.previewDoc"
-            />
-            <n-empty v-else size="small" description="未生成页面" />
+            ></iframe>
+            <span v-else class="muted">这一轮没有生成网页</span>
           </div>
-        </n-card>
-      </n-flex>
+        </li>
+      </ol>
     </n-scrollbar>
   </div>
 </template>
 
 <script setup lang="ts">
-import { onMounted, ref, watch } from "vue"
+import { computed, onMounted, ref, watch } from "vue"
 import { Icon } from "../../icons"
 import { useMessage } from "naive-ui"
 import { renderMarkdown } from "../../utils/markdown"
-import { sourceLabel } from "../../utils/helper"
+import { levelLabel, sourceLabel } from "../../utils/helper"
 import { Prompt } from "../../api"
 import type { PromptHistoryItem } from "../../utils/type"
 import { parseTime } from "../../utils/helper"
-import { buildPreviewDocument } from "../../utils/previewDocument"
+import { buildPreviewDocument, PREVIEW_SANDBOX } from "../../utils/previewDocument"
 
 const props = defineProps<{
   taskId: number
@@ -152,6 +91,8 @@ const emit = defineEmits<{
 }>()
 
 type HistoryViewItem = PromptHistoryItem & {
+  // 按时间先后的序号（从 1 开始）
+  index: number
   hasPage: boolean
   previewDoc: string
 }
@@ -165,12 +106,16 @@ let pendingRefresh = false
 
 const naiveMessage = useMessage()
 
-function toViewItem(item: PromptHistoryItem): HistoryViewItem {
+// 最新的放最上面，序号还是按时间先后
+const newestFirst = computed(() => [...items.value].reverse())
+
+function toViewItem(item: PromptHistoryItem, i: number): HistoryViewItem {
   const html = item.code_html ?? ""
   const css = item.code_css ?? ""
   const js = item.code_js ?? ""
   return {
     ...item,
+    index: i + 1,
     hasPage: !!(html.trim() || css.trim() || js.trim()),
     previewDoc: buildPreviewDocument({
       html,
@@ -181,15 +126,14 @@ function toViewItem(item: PromptHistoryItem): HistoryViewItem {
   }
 }
 
-async function deleteItem(item: HistoryViewItem, e: Event) {
-  e.stopPropagation()
+async function deleteItem(item: HistoryViewItem) {
   if (deletingId.value !== null) return
   deletingId.value = item.assistant_message_id
   try {
     await Prompt.deleteMessagePair(item.assistant_message_id)
-    items.value = items.value.filter(
-      (i) => i.assistant_message_id !== item.assistant_message_id,
-    )
+    items.value = items.value
+      .filter((i) => i.assistant_message_id !== item.assistant_message_id)
+      .map((i, idx) => ({ ...i, index: idx + 1 }))
     if (selectedAssistantMessageId.value === item.assistant_message_id) {
       selectedAssistantMessageId.value = null
     }
@@ -225,7 +169,7 @@ async function load(force = true) {
   try {
     const taskChanged = loadedTaskId !== props.taskId
     const data = await Prompt.listHistory(props.taskId)
-    items.value = data.map(toViewItem)
+    items.value = data.map((item, i) => toViewItem(item, i))
     if (
       taskChanged ||
       !items.value.some(
@@ -280,100 +224,164 @@ onMounted(() => {
   overflow: hidden;
 }
 
-.history-toolbar {
+.toolbar {
   height: 42px;
-  padding: 0 12px;
-  border-bottom: 1px solid var(--n-border-color, var(--wp-line));
-  flex-shrink: 0;
+  flex: none;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 8px 0 14px;
+  border-bottom: 1px solid var(--wp-line);
+}
+
+.muted {
+  font-size: 12px;
+  color: var(--wp-muted);
 }
 
 .state {
   margin: auto;
 }
 
-.history-scrollbar {
+.scroll {
   flex: 1;
   min-height: 0;
 }
 
-.history-list {
-  padding: 12px;
-}
-
-.history-card {
-  cursor: pointer;
-  overflow: hidden;
-}
-
-
-.history-card.is-selected {
-  --n-color: var(--wp-brand-soft);
-  box-shadow: 0 10px 24px rgba(13, 122, 82, 0.14);
-}
-
-.history-card.is-selected .history-main {
-  background: var(--wp-brand-soft);
-}
-
-.history-main {
-  padding: 10px 12px;
-  transition: background-color 0.18s ease;
-}
-
-.prompt-markdown {
+.list {
   margin: 0;
-  padding: 0 12px 12px;
-  color: var(--wp-ink);
-  font-size: 14px;
-  line-height: 1.6;
-  word-break: break-word;
-  background: transparent;
+  padding: 12px;
+  list-style: none;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
 }
 
-.prompt-markdown :deep(p),
-.prompt-markdown :deep(ul),
-.prompt-markdown :deep(ol),
-.prompt-markdown :deep(blockquote),
-.prompt-markdown :deep(pre) {
-  margin-top: 0;
-  margin-bottom: 6px;
+.item {
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  overflow: hidden;
+  background: var(--wp-surface);
+  cursor: pointer;
 }
 
-.prompt-markdown :deep(:last-child) {
-  margin-bottom: 0;
+.item:hover {
+  border-color: var(--wp-faint);
 }
 
-.prompt-markdown :deep(pre) {
-  padding: 8px;
-  overflow-x: auto;
+.item.on {
+  border-color: var(--wp-brand);
+}
+
+.head {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 8px 6px 4px 10px;
   font-size: 12px;
 }
 
-.prompt-markdown :deep(code) {
-  white-space: pre-wrap;
-  word-break: break-word;
+.num {
+  min-width: 18px;
+  font: 600 12px var(--wp-font-mono);
+  color: var(--wp-muted);
 }
 
-.thumbnail {
-  height: 160px;
-  border-top: 1px solid var(--n-border-color, var(--wp-line));
+.src,
+.level,
+.submitted {
+  padding: 0 6px;
+  border-radius: 4px;
+  line-height: 18px;
+  white-space: nowrap;
+}
+
+.src {
+  color: var(--wp-css);
+  background: var(--wp-css-soft);
+}
+
+.src-edit {
+  color: var(--wp-js);
+  background: var(--wp-js-soft);
+}
+
+.src-manual {
+  color: var(--wp-html);
+  background: var(--wp-html-soft);
+}
+
+.level {
+  color: var(--wp-ink);
   background: var(--wp-paper);
-  overflow: hidden;
-  display: flex;
-  align-items: center;
-  justify-content: center;
+  border: 1px solid var(--wp-line);
 }
 
-.history-card.is-selected .thumbnail {
-  border-top-color: var(--wp-brand-soft);
+.submitted {
+  color: var(--wp-brand);
   background: var(--wp-brand-soft);
 }
 
-.thumbnail iframe {
-  width: 100%;
-  height: 100%;
+.time {
+  margin-left: auto;
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-muted);
+}
+
+.del {
+  color: var(--wp-faint);
+}
+
+.q {
+  max-height: 66px;
+  overflow: hidden;
+  padding: 0 10px 8px;
+  background: transparent;
+  color: var(--wp-ink);
+  font-size: 13px;
+  line-height: 1.6;
+  word-break: break-word;
+  -webkit-mask-image: linear-gradient(#000 60%, transparent);
+  mask-image: linear-gradient(#000 60%, transparent);
+}
+
+.q :deep(p),
+.q :deep(ul),
+.q :deep(ol),
+.q :deep(pre),
+.q :deep(blockquote) {
+  margin: 0 0 4px;
+}
+
+.q :deep(pre) {
+  padding: 6px 8px;
+  font-size: 12px;
+}
+
+.q :deep(code) {
+  white-space: pre-wrap;
+}
+
+.thumb {
+  position: relative;
+  height: 140px;
+  display: grid;
+  place-items: center;
+  border-top: 1px solid var(--wp-line);
+  background: var(--wp-paper);
+  overflow: hidden;
+}
+
+/* 按 2 倍大小渲染再缩小 */
+.thumb iframe {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 200%;
+  height: 200%;
   border: 0;
-  background: var(--wp-surface);
+  transform: scale(0.5);
+  transform-origin: 0 0;
   pointer-events: none;
 }
 </style>

client/src/components/ai/PromptPanel.vue

@@ -52,77 +52,130 @@
       <!-- Streaming indicator -->
       <div v-if="streaming" class="message assistant">
         <div class="message-role">AI</div>
-        <div v-if="!streamingContent" class="typing-indicator">
-          <span></span><span></span><span></span>
-        </div>
-        <div
-          v-else
-          class="message-content"
-          v-html="renderMarkdown(streamingContent)"
-        ></div>
-        <div class="streaming-hint">AI 正在生成中…</div>
+        <template v-if="!streamingContent">
+          <div class="typing-indicator">
+            <span></span><span></span><span></span>
+          </div>
+          <div class="streaming-hint">
+            AI 正在构思… 已 {{ elapsedText }}<template v-if="elapsed >= 20">，复杂的网页要想一两分钟</template>
+          </div>
+        </template>
+        <template v-else>
+          <div
+            v-if="streamParts.prose"
+            class="message-content"
+            v-html="renderMarkdown(streamParts.prose)"
+          ></div>
+          <div v-if="streamParts.lines >= 0" class="code-progress">
+            <Icon icon="lucide:sparkles" :width="14" />
+            正在写网页… 已写 {{ streamParts.lines }} 行
+          </div>
+          <div v-else class="streaming-hint">AI 正在回复…</div>
+        </template>
       </div>
       <RatingCard v-if="rating" :active="streaming" />
     </div>
     <GuidancePanel @generate="onGuidanceGenerate" />
     <div class="input-area">
-      <n-flex
-        class="prompt-input-row"
-        align="flex-start"
-        :wrap="false"
-        :size="8"
-      >
-        <n-input
-          v-model:value="input"
-          type="textarea"
-          :autosize="{ minRows: 1, maxRows: 4 }"
-          placeholder="描述你想要的网页效果..."
-          :disabled="streaming"
-          style="flex: 1; min-width: 0"
-          @keydown.enter.exact.prevent="send"
-        />
-        <n-tooltip>
-          <template #trigger>
-            <n-button
-              secondary
-              :disabled="!input.trim() || !connected || !currentTaskId || streaming"
-              style="flex-shrink: 0"
-              @click="startGuidance"
-            >
-              <template #icon>
-                <Icon icon="lucide:lightbulb" :width="16" />
-              </template>
-              帮我写清楚
-            </n-button>
-          </template>
-          AI 教练会问你几个问题，帮你把想要的效果描述清楚
-        </n-tooltip>
-      </n-flex>
-      <n-flex justify="flex-end" align="center" style="margin-top: 8px">
-        <n-select
-          v-model:value="selectedModel"
-          :options="modelOptions"
-          style="width: 150px"
-          :disabled="streaming"
-        />
-        <n-button v-if="streaming" type="error" @click="stopPrompt">
-          停止
-        </n-button>
-        <n-button
-          v-else
-          type="primary"
-          :disabled="!input.trim() || !connected"
-          @click="send"
+      <!-- 只说“不行”“没反应”时提醒一下，可以直接发 -->
+      <div v-if="vagueHint" class="vague-hint">
+        <span>说清楚哪里不对，AI 更容易一次修好</span>
+        <n-flex :size="4" :wrap="false">
+          <n-button size="tiny" type="primary" secondary @click="openProblem">说清楚</n-button>
+          <n-button size="tiny" quaternary @click="sendAnyway">直接发</n-button>
+        </n-flex>
+      </div>
+      <div v-if="problemOpen" class="problem">
+        <div class="problem-title">出问题了？说清楚这三件事</div>
+        <label>我做了什么</label>
+        <n-input v-model:value="problem.did" placeholder="比如：点了「开始」按钮" />
+        <label>想看到什么</label>
+        <n-input v-model:value="problem.want" placeholder="比如：倒计时开始走" />
+        <label>实际看到了什么</label>
+        <n-input v-model:value="problem.saw" placeholder="比如：数字一直停在 60 不动" />
+        <n-flex justify="end" :size="8" style="margin-top: 10px">
+          <n-button @click="problemOpen = false">取消</n-button>
+          <n-button
+            type="primary"
+            :disabled="!problem.did.trim() || !problem.saw.trim() || !connected || streaming"
+            @click="sendProblem"
+          >
+            发给 AI
+          </n-button>
+        </n-flex>
+      </div>
+      <template v-else>
+        <n-flex
+          class="prompt-input-row"
+          align="flex-start"
+          :wrap="false"
+          :size="8"
         >
-          发送
-        </n-button>
-      </n-flex>
+          <n-input
+            v-model:value="input"
+            type="textarea"
+            :autosize="{ minRows: 1, maxRows: 4 }"
+            placeholder="用你自己的话说说想做成什么样…"
+            :disabled="streaming"
+            style="flex: 1; min-width: 0"
+            @keydown.enter.exact.prevent="send"
+          />
+          <n-tooltip>
+            <template #trigger>
+              <n-button
+                secondary
+                :disabled="!input.trim() || !connected || !currentTaskId || streaming"
+                style="flex-shrink: 0"
+                @click="startGuidance"
+              >
+                <template #icon>
+                  <Icon icon="lucide:lightbulb" :width="16" />
+                </template>
+                帮我写清楚
+              </n-button>
+            </template>
+            AI 教练会问你几个问题，帮你把想要的效果描述清楚
+          </n-tooltip>
+        </n-flex>
+        <n-flex justify="space-between" align="center" style="margin-top: 8px">
+          <n-tooltip>
+            <template #trigger>
+              <n-button quaternary :disabled="!hasVersion || streaming" @click="openProblem">
+                <template #icon>
+                  <Icon icon="lucide:bug" :width="16" />
+                </template>
+                出问题了
+              </n-button>
+            </template>
+            网页哪里不对？说清楚做了什么、想看到什么、实际看到了什么
+          </n-tooltip>
+          <n-flex align="center" :size="8">
+            <n-select
+              v-model:value="selectedModel"
+              :options="modelOptions"
+              style="width: 150px"
+              :disabled="streaming"
+            />
+            <n-button v-if="streaming" type="error" @click="stopPrompt">
+              停止
+            </n-button>
+            <n-button
+              v-else
+              type="primary"
+              :disabled="!input.trim() || !connected"
+              @click="send"
+            >
+              发送
+            </n-button>
+          </n-flex>
+        </n-flex>
+      </template>
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, watch, nextTick, computed } from "vue"
+import { ref, reactive, watch, nextTick, computed, onUnmounted } from "vue"
 import { useStorage } from "@vueuse/core"
 import { useMessage } from "naive-ui"
 import { Icon } from "../../icons"
@@ -133,6 +186,7 @@ import {
   messages,
   streaming,
   streamingContent,
+  streamStartedAt,
   connected,
   sendPrompt,
   stopPrompt,
@@ -221,6 +275,46 @@ async function deletePair(assistantMsgId: number) {
 async function send() {
   const text = input.value.trim()
   if (!text || streaming.value) return
+  // 只说“不行”“没反应”，AI 只能瞎猜；提醒一次，学生选“直接发”以后这次就不再拦
+  if (!skipVagueCheck && hasVersion.value && [...text].length <= 15 && VAGUE.test(text)) {
+    vagueHint.value = true
+    return
+  }
+  input.value = ""
+  await props.beforeSend?.()
+  sendPrompt(text, selectedModel.value)
+}
+
+// “出问题了”：做了什么、想看到什么、实际看到了什么，拼成一句发给 AI
+const VAGUE =
+  /不行|不对|没反应|没用|没效果|用不了|不能用|不能玩|动不了|进不去|打不开|没显示|不显示|显示不出|bug|出错|报错|错了|坏了|白屏|空白|有问题/i
+const vagueHint = ref(false)
+let skipVagueCheck = false
+const problemOpen = ref(false)
+const problem = reactive({ did: "", want: "", saw: "" })
+
+watch(input, () => (vagueHint.value = false))
+
+const hasVersion = computed(() => messages.value.some((m) => m.role === "assistant" && hasCode(m)))
+
+function openProblem() {
+  vagueHint.value = false
+  problemOpen.value = true
+}
+
+function sendAnyway() {
+  skipVagueCheck = true
+  vagueHint.value = false
+  send()
+}
+
+async function sendProblem() {
+  const part = (s: string) => s.trim().replace(/[。，,.！!；;]+$/, "")
+  const did = part(problem.did).replace(/^我/, "")
+  const want = part(problem.want)
+  const text = `我${did}，${want ? `想看到${want}，` : ""}但实际${part(problem.saw)}。`
+  Object.assign(problem, { did: "", want: "", saw: "" })
+  problemOpen.value = false
   input.value = ""
   await props.beforeSend?.()
   sendPrompt(text, selectedModel.value)
@@ -238,10 +332,47 @@ async function onGuidanceGenerate(finalPrompt: string) {
   sendPrompt(finalPrompt, selectedModel.value)
 }
 
-function renderContent(msg: { role: string; content: string }): string {
-  return renderMarkdown(msg.content)
+// 学生只关心成品：AI 回复里的代码块不在对话里展开（右边“代码”里能看），只说写了多少行。
+// 按 ``` 切开，奇数段是代码；段数是偶数说明最后一个代码块还没写完
+function splitCode(text: string) {
+  const parts = text.split("```")
+  const prose = parts.filter((_, i) => i % 2 === 0).join("\n\n").trim()
+  const code = parts.filter((_, i) => i % 2 === 1)
+  const lines = code.reduce((n, c) => n + c.split("\n").length - 1, 0)
+  return { prose, lines: code.length ? lines : -1 }
 }
 
+const streamParts = computed(() => splitCode(streamingContent.value))
+
+function renderContent(msg: { role: string; content: string }): string {
+  if (msg.role !== "assistant") return renderMarkdown(msg.content)
+  const { prose, lines } = splitCode(msg.content)
+  const note = lines >= 0 ? `<p class="code-note">网页代码 ${lines} 行，在右边“代码”里看</p>` : ""
+  return renderMarkdown(prose) + note
+}
+
+// 等 AI 的计时：每秒刷新一次
+const now = ref(Date.now())
+let ticker: ReturnType<typeof setInterval> | undefined
+watch(
+  streaming,
+  (on) => {
+    clearInterval(ticker)
+    now.value = Date.now()
+    if (on) ticker = setInterval(() => (now.value = Date.now()), 1000)
+  },
+  { immediate: true },
+)
+onUnmounted(() => clearInterval(ticker))
+
+const elapsed = computed(() =>
+  streamStartedAt.value ? Math.max(0, Math.floor((now.value - streamStartedAt.value) / 1000)) : 0,
+)
+const elapsedText = computed(() => {
+  const s = elapsed.value
+  return s < 60 ? `${s} 秒` : `${Math.floor(s / 60)} 分 ${s % 60} 秒`
+})
+
 watch([() => messages.value.length, streamingContent], () => {
   nextTick(() => {
     if (messagesRef.value) {
@@ -377,6 +508,20 @@ watch([() => messages.value.length, streamingContent], () => {
   }
 }
 
+.code-progress {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-top: 6px;
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
+.message-content :deep(.code-note) {
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
 .streaming-hint {
   font-size: 11px;
   color: var(--wp-faint);
@@ -384,6 +529,31 @@ watch([() => messages.value.length, streamingContent], () => {
   animation: pulse 1.5s ease-in-out infinite;
 }
 
+.vague-hint {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  margin-bottom: 8px;
+  padding: 6px 10px;
+  border-radius: 6px;
+  background: var(--wp-brand-soft);
+  font-size: 13px;
+}
+
+.problem-title {
+  margin-bottom: 4px;
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.problem label {
+  display: block;
+  margin: 8px 0 4px;
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
 .input-area {
   flex-shrink: 0;
   padding: 12px;

client/src/components/editor/Preview.vue

@@ -2,9 +2,6 @@
   <n-flex align="center" justify="space-between" class="title">
     <div>
       <slot name="title"><n-text class="titleText">预览</n-text></slot>
-      <n-text v-if="!!submission.id" depth="3">
-        ({{ submission.view_count || 0 }})
-      </n-text>
     </div>
     <n-flex>
       <n-tooltip>
@@ -19,26 +16,6 @@
       </n-tooltip>
       <n-button quaternary @click="download" :disabled="!showDL">下载</n-button>
       <n-button quaternary @click="open">全屏</n-button>
-      <n-button quaternary v-if="props.clearable" @click="clear">清空</n-button>
-      <n-button
-        quaternary
-        v-if="props.showCodeButton"
-        @click="emits('showCode')"
-      >
-        代码
-      </n-button>
-      <n-button quaternary v-if="props.submissionId" @click="copyLink">
-        链接
-      </n-button>
-      <n-flex v-if="!!submission.id" align="center">
-        <n-button quaternary @click="emits('showCode')">代码</n-button>
-        <n-popover v-if="submission.my_score === 0">
-          <template #trigger>
-            <n-button secondary type="primary">打分</n-button>
-          </template>
-          <n-rate :size="30" @update:value="updateScore" />
-        </n-popover>
-      </n-flex>
     </n-flex>
   </n-flex>
   <div class="iframe-wrapper" :style="iframeWrapperStyle">
@@ -46,6 +23,7 @@
       ref="frame"
       class="iframe"
       :sandbox="PREVIEW_SANDBOX"
+      :key="frameKey"
       :srcdoc="previewContent"
     ></iframe>
   </div>
@@ -53,12 +31,7 @@
 <script lang="ts" setup>
 import { watchDebounced } from "@vueuse/core"
 import { computed, onMounted, onUnmounted, ref, useTemplateRef } from "vue"
-import { useRouter } from "vue-router"
-import { Submission } from "../../api"
-import { submission } from "../../store/submission"
-import { useMessage } from "naive-ui"
 import { Icon } from "../../icons"
-import copy from "copy-text-to-clipboard"
 import {
   buildPreviewDocument,
   PREVIEW_SANDBOX,
@@ -74,15 +47,11 @@ interface Props {
   css: string
   js: string
   assetBaseUrl?: string
-  submissionId?: string
-  showCodeButton?: boolean
-  clearable?: boolean
   // 自己的编辑器传当前任务 id：代码里的 localStorage 按“用户 + 任务”存下来，刷新后还在
   storageTaskId?: number
 }
 
 const props = defineProps<Props>()
-const emits = defineEmits(["afterScore", "showCode", "clear"])
 
 type Layout = "desktop" | "mobile" | "tablet"
 const layouts: Layout[] = ["desktop", "mobile", "tablet"]
@@ -120,9 +89,6 @@ function cycleLayout() {
   layoutIndex.value = (layoutIndex.value + 1) % layouts.length
 }
 
-const message = useMessage()
-const router = useRouter()
-
 const showDL = computed(() => props.html || props.css || props.js)
 const previewContent = ref("")
 
@@ -141,8 +107,12 @@ function getContent(forDownload = false) {
   })
 }
 
+// 每次内容变了换一个新的 iframe：在同一个 iframe 里改 srcdoc 会进浏览器历史，
+// 按“后退”就成了在预览里倒退，而不是离开页面
+const frameKey = ref(0)
 function preview() {
   previewContent.value = getContent()
+  frameKey.value++
 }
 
 function download() {
@@ -157,48 +127,21 @@ function download() {
 }
 
 function open() {
-  if (props.submissionId) {
-    const data = router.resolve({
-      name: "submission",
-      params: { id: props.submissionId },
-    })
-    window.open(data.href, "_blank")
-  } else {
-    const newTab = window.open("about:blank", "_blank")
-    if (!newTab) return
-    // 新标签页和本站同源，代码要放进带 sandbox 的 iframe 里跑
-    const doc = newTab.document
-    doc.open()
-    doc.write(
-      `<!DOCTYPE html><title>预览</title><style>html,body,iframe{margin:0;width:100%;height:100%;border:0;display:block}</style><iframe sandbox="${PREVIEW_SANDBOX}"></iframe>`,
-    )
-    doc.close()
-    const tabFrame = doc.querySelector("iframe")!
-    // 全屏页里的写入也存到同一个地方
-    listenPreviewStorage(newTab, () => tabFrame, storageScope)
-    tabFrame.srcdoc = getContent()
-  }
+  const newTab = window.open("about:blank", "_blank")
+  if (!newTab) return
+  // 新标签页和本站同源，代码要放进带 sandbox 的 iframe 里跑
+  const doc = newTab.document
+  doc.open()
+  doc.write(
+    `<!DOCTYPE html><title>预览</title><style>html,body,iframe{margin:0;width:100%;height:100%;border:0;display:block}</style><iframe sandbox="${PREVIEW_SANDBOX}"></iframe>`,
+  )
+  doc.close()
+  const tabFrame = doc.querySelector("iframe")!
+  // 全屏页里的写入也存到同一个地方
+  listenPreviewStorage(newTab, () => tabFrame, storageScope)
+  tabFrame.srcdoc = getContent()
 }
 
-function clear() {
-  emits("clear")
-}
-
-function copyLink() {
-  copy(`${document.location.origin}/submission/${props.submissionId}`)
-  message.success("该提交的链接已复制")
-}
-
-async function updateScore(score: number) {
-  try {
-    const res = await Submission.updateScore(submission.value.id, score)
-    message.success(res.message)
-    submission.value.my_score = score
-    emits("afterScore")
-  } catch (err: any) {
-    message.error(err.response.data.detail)
-  }
-}
 
 watchDebounced(
   () => [props.html, props.css, props.js, props.assetBaseUrl],

client/src/components/layout/AppShell.vue

@@ -121,11 +121,7 @@ const userMenu = [
 
 async function clickUserMenu(key: string) {
   if (key === "submissions") {
-    router.push({
-      name: "submissions",
-      params: { page: 1 },
-      query: { username: user.username },
-    })
+    router.push({ name: "submissions" })
   } else if (key === "logout") {
     await logout()
     // 留在需要登录或特定角色的页面上没有意义

client/src/components/review/PeersDrawer.vue

@@ -1,6 +1,6 @@
 <template>
   <n-drawer v-model:show="show" :width="600" placement="right">
-    <n-drawer-content title="同学作品" :native-scrollbar="false">
+    <n-drawer-content title="作品" :native-scrollbar="false">
       <n-spin :show="loading">
         <n-result
           v-if="data?.locked"
@@ -10,9 +10,19 @@
           style="margin-top: 40px"
         />
         <template v-else-if="data">
-          <p class="hint">
-            本班同学在这道题上最新的作品。打分之前不显示是谁做的，打完分才显示。
-          </p>
+          <n-flex justify="space-between" align="center" class="bar">
+            <span class="hint">
+              {{
+                roleStaff
+                  ? "学生们在这道题上最新的作品。"
+                  : "同学们在这道题上最新的作品。打分之前不显示是谁做的，打完分才显示。"
+              }}
+            </span>
+            <n-radio-group v-model:value="scope" size="small">
+              <n-radio-button value="class">本班</n-radio-button>
+              <n-radio-button value="all">全部班级</n-radio-button>
+            </n-radio-group>
+          </n-flex>
           <n-empty v-if="!data.items.length" description="还没有同学交这道题" />
           <div class="grid">
             <div v-for="w in data.items" :key="w.id" class="work">
@@ -25,7 +35,10 @@
                 ></iframe>
               </button>
               <div class="info">
-                <span :class="{ anon: !w.username }">{{ w.username ?? "匿名同学" }}</span>
+                <span :class="{ anon: !w.username }">
+                  <span v-if="scope === 'all' && w.classname" class="cls">{{ w.classname }} 班</span>
+                  {{ w.username ?? "匿名同学" }}
+                </span>
                 <span v-if="w.my_score" class="mine">我给了 {{ w.my_score }} 分</span>
               </div>
               <div v-if="!w.my_score" class="rates">
@@ -52,7 +65,7 @@
     @update:show="(v: boolean) => !v && (large = null)"
   >
     <div v-if="large" class="large">
-      <iframe :sandbox="PREVIEW_SANDBOX" :srcdoc="docOf(large)"></iframe>
+      <iframe :key="large.id" :sandbox="PREVIEW_SANDBOX" :srcdoc="docOf(large)"></iframe>
     </div>
   </n-modal>
 </template>
@@ -60,6 +73,7 @@
 import { ref, watch } from "vue"
 import { useMessage } from "naive-ui"
 import { Review, Submission } from "../../api"
+import { roleStaff } from "../../store/user"
 import { buildPreviewDocument, PREVIEW_SANDBOX } from "../../utils/previewDocument"
 import type { PeerWork, PeerWorks } from "../../utils/type"
 
@@ -79,19 +93,26 @@ const data = ref<PeerWorks | null>(null)
 const loading = ref(false)
 const rating = ref<string | null>(null)
 const large = ref<PeerWork | null>(null)
+const scope = ref<"class" | "all">("class")
 
 const docOf = (w: PeerWork) =>
   buildPreviewDocument({ html: w.html, css: w.css, js: w.js, assetBaseUrl: props.assetBaseUrl })
 
-watch(show, async (open) => {
-  if (!open || !props.taskId) return
+let seq = 0
+async function load() {
+  if (!props.taskId) return
+  const s = ++seq
   loading.value = true
   try {
-    data.value = await Review.peers(props.taskId)
+    const res = await Review.peers(props.taskId, scope.value)
+    if (s === seq) data.value = res
   } finally {
-    loading.value = false
+    if (s === seq) loading.value = false
   }
-})
+}
+
+watch(show, (open) => open && load())
+watch(scope, load)
 
 async function rate(w: PeerWork, score: number) {
   rating.value = w.id
@@ -107,12 +128,22 @@ async function rate(w: PeerWork, score: number) {
 }
 </script>
 <style scoped>
+.bar {
+  margin-bottom: 12px;
+  flex-wrap: nowrap !important;
+}
+
 .hint {
-  margin: 0 0 12px;
   font-size: 13px;
   color: var(--wp-muted);
 }
 
+.cls {
+  margin-right: 4px;
+  color: var(--wp-muted);
+  font-size: 12px;
+}
+
 .grid {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));

client/src/components/review/ReviewPanel.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="panel">
+  <div :class="['panel', { wide }]">
     <div class="head">
       <div class="who">
         <b>{{ sub?.username ?? "…" }}</b>
@@ -13,7 +13,7 @@
                 <Icon icon="lucide:arrow-left" />
               </n-button>
             </template>
-            上一个学生（K）
+            上一个学生（J）
           </n-tooltip>
           <n-tooltip>
             <template #trigger>
@@ -21,17 +21,34 @@
                 <Icon icon="lucide:arrow-right" />
               </n-button>
             </template>
-            下一个学生（J）
+            下一个学生（K）
           </n-tooltip>
         </template>
-        <n-button size="small" quaternary @click="emit('close')">
-          <Icon icon="lucide:x" />
+        <n-button
+          v-if="canWiden"
+          size="small"
+          quaternary
+          @click="emit('toggle-wide')"
+        >
+          <template #icon>
+            <Icon :icon="wide ? 'lucide:minimize-2' : 'lucide:maximize-2'" />
+          </template>
+          {{ wide ? "小面板" : "大图" }}
         </n-button>
+        <n-tooltip>
+          <template #trigger>
+            <n-button size="small" quaternary @click="emit('close')">
+              <Icon icon="lucide:x" />
+            </n-button>
+          </template>
+          {{ wide ? "返回作品墙（Esc）" : "关闭" }}
+        </n-tooltip>
       </n-flex>
     </div>
 
     <n-spin :show="loading" class="body">
-      <template v-if="sub">
+      <div v-if="sub" class="layout">
+       <div class="stage">
         <div class="versions" v-if="versions.length > 1">
           <span class="muted">共交了 {{ versions.length }} 次：</span>
           <button
@@ -44,7 +61,8 @@
           </button>
         </div>
         <div class="frame">
-          <iframe :sandbox="PREVIEW_SANDBOX" :srcdoc="doc"></iframe>
+          <!-- key：换作品时换新的 iframe，不进浏览器历史 -->
+          <iframe :key="currentId" :sandbox="PREVIEW_SANDBOX" :srcdoc="doc"></iframe>
         </div>
         <n-flex justify="space-between" align="center" class="meta">
           <span class="muted">
@@ -53,6 +71,8 @@
           </span>
           <n-button text size="small" @click="openFull">全屏打开</n-button>
         </n-flex>
+       </div>
+       <div class="side">
 
         <section>
           <h4>打分</h4>
@@ -91,23 +111,47 @@
             </n-dropdown>
           </n-flex>
           <div class="muted hint">P 键：加入 / 取消课上展示</div>
+          <n-popconfirm v-if="canDelete" @positive-click="remove">
+            <template #trigger>
+              <n-button size="small" quaternary type="error" class="delete">删除这一版</n-button>
+            </template>
+            删除后找不回来，评分和作品展里的这一版也会一起删掉；它对应的那轮 AI 对话也会删掉。
+          </n-popconfirm>
+        </section>
+
+        <section v-if="sub.reflection">
+          <h4>学生说</h4>
+          <div class="reflection">{{ sub.reflection }}</div>
         </section>
 
         <section>
-          <h4>提示词 <span class="muted" v-if="chain.length">· {{ chain.length }} 轮</span></h4>
+          <n-flex justify="space-between" align="center" class="chain-head">
+            <h4>提示词 <span class="muted" v-if="chainSteps">· {{ chainSteps }} 轮</span></h4>
+            <n-button v-if="chain.length" size="tiny" quaternary @click="showChain = true">
+              逐轮看网页
+            </n-button>
+          </n-flex>
           <div v-if="!chain.length" class="muted">这份提交没有关联的提示词</div>
           <ol class="chain">
-            <li v-for="(r, i) in chain" :key="i">
+            <li v-for="(r, i) in chain" :key="i" :class="{ guide: r.source === 'guidance' }">
               <n-flex :size="6" align="center">
                 <span class="src">{{ sourceLabel(r.source) }}</span>
-                <span v-if="r.prompt_level" class="level">L{{ r.prompt_level }}</span>
+                <span v-if="r.prompt_level" class="level">{{ levelLabel(r.prompt_level) }}</span>
               </n-flex>
               <div class="q">{{ r.question }}</div>
             </li>
           </ol>
         </section>
-      </template>
+       </div>
+      </div>
     </n-spin>
+    <ChainModal
+      v-if="sub"
+      v-model:show="showChain"
+      :submission-id="sub.id"
+      :title="`${sub.username} · ${sub.task_title}`"
+      :asset-base-url="`/media/tasks/${sub.task_type}/${sub.task_display}/`"
+    />
   </div>
 </template>
 <script lang="ts" setup>
@@ -116,7 +160,8 @@ import { useMessage } from "naive-ui"
 import { Icon } from "../../icons"
 import { Showcase, Submission } from "../../api"
 import { buildPreviewDocument, PREVIEW_SANDBOX } from "../../utils/previewDocument"
-import { parseTime, sourceLabel } from "../../utils/helper"
+import { levelLabel, parseTime, sourceLabel } from "../../utils/helper"
+import ChainModal from "../submissions/ChainModal.vue"
 import type {
   AwardManageOut,
   FlagType,
@@ -128,15 +173,23 @@ import type {
 // 老师看一份提交：预览、交过的各个版本、打分、课上展示、加入作品展、提示词链
 const props = defineProps<{
   submissionId: string
+  // 大图：预览占满左边，打分和提示词放右边一栏
+  wide?: boolean
+  // 是否显示“大图 / 小面板”切换
+  canWiden?: boolean
   // 作品墙里用：能不能切到上一个 / 下一个学生
   nav?: { prev: boolean; next: boolean }
+  // 全部提交页（超管）：能删除这一版
+  canDelete?: boolean
 }>()
 const emit = defineEmits<{
   prev: []
   next: []
   close: []
+  "toggle-wide": []
   // 让作品墙同步更新这张卡片
   changed: [patch: { id: string; my_score?: number; score?: number; flag?: FlagType }]
+  deleted: [id: string]
 }>()
 
 const message = useMessage()
@@ -146,6 +199,9 @@ const sub = ref<SubmissionAll | null>(null)
 const versions = ref<SubmissionOut[]>([])
 const chain = ref<PromptRound[]>([])
 const rating = ref(false)
+const showChain = ref(false)
+// 引导对话不生成网页，不算轮数
+const chainSteps = computed(() => chain.value.filter((r) => r.source !== "guidance").length)
 
 let awardsCache: Promise<AwardManageOut[]> | null = null
 const awards = ref<AwardManageOut[]>([])
@@ -229,6 +285,19 @@ async function addToAward(awardId: number) {
   }
 }
 
+async function remove() {
+  if (!sub.value) return
+  const id = sub.value.id
+  try {
+    await Submission.delete(id)
+  } catch (err: any) {
+    message.error(err.response?.data?.detail ?? "删除失败")
+    return
+  }
+  message.success("已删除")
+  emit("deleted", id)
+}
+
 function openFull() {
   if (sub.value) window.open(`/submission/${sub.value.id}`, "_blank")
 }
@@ -282,6 +351,41 @@ onUnmounted(() => window.removeEventListener("keydown", onKey))
   padding: 12px 14px 20px;
 }
 
+/* 大图：左边预览占满高度，右边一栏单独滚动 */
+.wide .body {
+  overflow: hidden;
+  padding: 0;
+}
+
+.wide .body :deep(.n-spin-content) {
+  height: 100%;
+}
+
+.wide .layout {
+  height: 100%;
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 320px;
+}
+
+.wide .stage {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  padding: 12px 14px;
+}
+
+.wide .stage .frame {
+  flex: 1;
+  height: auto;
+  min-height: 0;
+}
+
+.wide .side {
+  border-left: 1px solid var(--wp-line);
+  overflow-y: auto;
+  padding: 0 14px 20px;
+}
+
 .muted {
   color: var(--wp-muted);
   font-size: 12px;
@@ -336,6 +440,18 @@ h4 {
   font-size: 13px;
 }
 
+.chain-head {
+  margin-bottom: 8px;
+}
+
+.chain-head h4 {
+  margin: 0;
+}
+
+.delete {
+  margin-top: 8px;
+}
+
 .rates {
   display: flex;
   gap: 6px;
@@ -361,6 +477,22 @@ h4 {
 
 .hint {
   margin-left: 6px;
+  white-space: nowrap;
+}
+
+.wide .rates {
+  flex-wrap: wrap;
+}
+
+/* 交的时候写的反思 */
+.reflection {
+  padding: 6px 10px;
+  border-left: 3px solid var(--wp-brand);
+  background: var(--wp-brand-soft);
+  font-size: 13px;
+  line-height: 1.6;
+  white-space: pre-wrap;
+  word-break: break-word;
 }
 
 .chain {
@@ -376,6 +508,12 @@ h4 {
   color: var(--wp-muted);
 }
 
+/* 不是 list-item，就不占 ol 的序号 */
+.chain .guide {
+  display: block;
+  color: var(--wp-muted);
+}
+
 .level {
   font: 600 11px var(--wp-font-mono);
   color: var(--wp-brand);

client/src/components/submissions/ChainModal.vue

@@ -2,232 +2,99 @@
   <n-modal
     :show="show"
     preset="card"
-    style="width: 90vw; max-width: 1400px"
-    @update:show="$emit('update:show', $event)"
+    style="width: 92vw; max-width: 1280px"
+    :bordered="false"
+    @update:show="emit('update:show', $event)"
   >
     <template #header>
-      <n-flex justify="start" align="center">
-        <span>提示词</span>
-        <n-tooltip placement="bottom-start">
-          <template #trigger>
-            <Icon icon="lucide:info" :width="20" style="color: var(--wp-faint)" />
-          </template>
-          <div style="line-height: 2">
-            <div>
-              <span :style="{ color: levelColors[1], fontWeight: 'bold' }">
-                L1
-              </span>
-              — 记忆：复述或识别知识点
-            </div>
-            <div>
-              <span :style="{ color: levelColors[2], fontWeight: 'bold' }">
-                L2
-              </span>
-              — 理解：用自己的话解释概念
-            </div>
-            <div>
-              <span :style="{ color: levelColors[3], fontWeight: 'bold' }">
-                L3
-              </span>
-              — 应用：将知识用于新情境
-            </div>
-            <div>
-              <span :style="{ color: levelColors[4], fontWeight: 'bold' }">
-                L4
-              </span>
-              — 分析：拆解结构、找出规律
-            </div>
-            <div>
-              <span :style="{ color: levelColors[5], fontWeight: 'bold' }">
-                L5
-              </span>
-              — 评价：基于标准作出判断
-            </div>
-            <div>
-              <span :style="{ color: levelColors[6], fontWeight: 'bold' }">
-                L6
-              </span>
-              — 创造：整合信息产出新成果
-            </div>
-          </div>
-        </n-tooltip>
-      </n-flex>
+      <div class="head">
+        <b>提示词</b>
+        <span v-if="steps" class="muted">{{ steps }} 轮</span>
+        <span v-if="title" class="muted title">{{ title }}</span>
+      </div>
     </template>
-    <n-spin :show="loading">
-      <n-empty
-        v-if="!loading && rounds.length === 0"
-        description="暂无对话记录"
-      />
-      <div
-        v-else
-        style="
-          display: grid;
-          grid-template-columns: 1fr 1fr;
-          gap: 16px;
-          height: 75vh;
-        "
-      >
-        <div
-          style="
-            overflow-y: auto;
-            padding-right: 8px;
-            border-right: 1px solid var(--wp-line);
-            display: flex;
-            flex-direction: column;
-            gap: 8px;
-          "
-        >
-          <div
-            v-for="(round, index) in rounds"
-            :key="index"
-            style="
-              display: flex;
-              gap: 10px;
-              align-items: flex-start;
-              cursor: pointer;
-            "
-            @click="selectedRound = index"
-          >
-            <div
-              :style="{
-                flexShrink: 0,
-                width: '22px',
-                height: '22px',
-                borderRadius: '50%',
-                background: selectedRound === index ? 'var(--wp-css)' : 'var(--wp-css-soft)',
-                color: 'var(--wp-surface)',
-                fontSize: '12px',
-                fontWeight: 'bold',
-                display: 'flex',
-                alignItems: 'center',
-                justifyContent: 'center',
-                marginTop: '2px',
-                transition: 'background 0.2s',
-              }"
-            >
-              {{ index + 1 }}
-            </div>
-            <div
-              :style="{
-                flex: 1,
-                padding: '10px 14px',
-                borderRadius: '8px',
-                background: selectedRound === index ? 'var(--wp-css-soft)' : 'var(--wp-paper)',
-                border:
-                  selectedRound === index
-                    ? '1px solid var(--wp-css)'
-                    : '1px solid var(--wp-line)',
-                fontSize: '13px',
-                lineHeight: '1.6',
-                transition: 'all 0.2s',
-              }"
-            >
-              <div
-                style="
-                  display: flex;
-                  justify-content: space-between;
-                  align-items: flex-start;
-                  gap: 8px;
-                "
-              >
-                <div
-                  class="prompt-markdown markdown-body"
-                  :class="{
-                    'is-collapsed':
-                      isPromptLong(round.question) && !isExpanded(index),
-                  }"
-                  v-html="renderMarkdown(round.question)"
-                ></div>
-                <div
-                  style="
-                    display: flex;
-                    flex-direction: row;
-                    align-items: center;
-                    gap: 4px;
-                    flex-shrink: 0;
-                  "
-                >
-                  <span
-                    v-if="round.source"
-                    :style="{
-                      fontSize: '10px',
-                      padding: '1px 5px',
-                      borderRadius: '4px',
-                      background:
-                        round.source === 'conversation' ? 'var(--wp-css-soft)' : 'var(--wp-line)',
-                      color:
-                        round.source === 'conversation' ? 'var(--wp-css)' : 'var(--wp-muted)',
-                      fontWeight: 500,
-                      whiteSpace: 'nowrap',
-                    }"
-                    >{{ sourceLabel(round.source) }}</span
-                  >
-                  <span
-                    v-if="round.prompt_level"
-                    :style="{
-                      fontSize: '11px',
-                      fontWeight: 'bold',
-                      color: levelColors[round.prompt_level],
-                    }"
-                    >L{{ round.prompt_level }}</span
-                  >
-                  <n-button
-                    v-if="isPromptLong(round.question)"
-                    text
-                    size="tiny"
-                    type="primary"
-                    @click.stop="toggleExpanded(index)"
-                  >
-                    <Icon
-                      :icon="
-                        isExpanded(index)
-                          ? 'lucide:chevron-up'
-                          : 'lucide:chevron-down'
-                      "
-                      :width="12"
-                    />
-                    {{ isExpanded(index) ? "收起" : "展开" }}
-                  </n-button>
-                  <n-popconfirm
-                    v-if="round.assistantMsgId && canDelete"
-                    :show-icon="false"
-                    @positive-click="deleteRound(index)"
-                  >
-                    <template #trigger>
-                      <n-button
-                        text
-                        size="tiny"
-                        type="error"
-                        style="margin-left: 2px"
-                        @click.stop
-                      >
-                        <Icon icon="lucide:trash-2" :width="12" />
-                      </n-button>
-                    </template>
-                    确定删除这一轮？
-                  </n-popconfirm>
-                </div>
-              </div>
-            </div>
+    <template #header-extra>
+      <n-popover trigger="click" placement="bottom-end">
+        <template #trigger>
+          <n-button size="small" quaternary style="margin-right: 8px">
+            <template #icon><Icon icon="lucide:info" /></template>
+            L1–L6 是什么
+          </n-button>
+        </template>
+        <div class="levels">
+          <div class="levels-note">按布鲁姆认知层级给每次提问打的标签，越高越需要思考：</div>
+          <div v-for="(l, n) in PROMPT_LEVELS" :key="n">
+            <b>L{{ n }} {{ l.name }}</b>：{{ l.desc }}
           </div>
         </div>
-        <div style="display: flex; flex-direction: column; gap: 8px">
-          <div style="font-weight: bold; font-size: 13px; color: var(--wp-ink)">
-            第 {{ selectedRound + 1 }} 轮网页
+      </n-popover>
+    </template>
+
+    <n-spin :show="loading">
+      <n-empty
+        v-if="!loading && !rounds.length"
+        description="这份提交没有关联的提示词"
+        style="padding: 80px 0"
+      />
+      <div v-else class="body">
+        <div class="left">
+          <div v-if="showTrend" class="trend">
+            <span class="muted">层级</span>
+            <div class="bars">
+              <button
+                v-for="b in trend"
+                :key="b.i"
+                :class="['bar', { on: b.i === selected, none: !b.level }]"
+                :style="{ height: `${b.level ? 6 + b.level * 5 : 4}px` }"
+                :title="`第 ${nums[b.i]} 轮${b.level ? ' · ' + levelLabel(b.level) : ''}`"
+                @click="select(b.i)"
+              ></button>
+            </div>
+          </div>
+          <ol class="rounds">
+            <li
+              v-for="(r, i) in rounds"
+              :key="i"
+              :class="['round', { on: i === selected, guide: isGuide(r) }]"
+              @click="isGuide(r) || (selected = i)"
+            >
+              <div class="round-head">
+                <span class="num">{{ nums[i] }}</span>
+                <span :class="['src', `src-${r.source || 'conversation'}`]">
+                  {{ sourceLabel(r.source) }}
+                </span>
+                <span v-if="r.prompt_level" class="level">{{ levelLabel(r.prompt_level) }}</span>
+                <span v-if="repeats[i]" class="repeat" title="和前面某一轮的提问一字不差">重复提问</span>
+                <span v-if="changes[i]" class="muted">{{ changes[i] }}</span>
+                <span v-if="i === rounds.length - 1" class="final">交的这一版</span>
+                <span v-else-if="isGuide(r)" class="muted no-code">问写提示词的建议，不生成网页</span>
+                <span v-else-if="!r.html" class="muted no-code">没有网页</span>
+              </div>
+              <div
+                :class="['q', 'markdown-body', { clamp: isLong(r.question) && !expanded.has(i) }]"
+                v-html="renderMarkdown(r.question)"
+              ></div>
+              <button v-if="isLong(r.question)" class="more" @click.stop="toggle(i)">
+                {{ expanded.has(i) ? "收起" : "展开全部" }}
+              </button>
+            </li>
+          </ol>
+        </div>
+
+        <div class="stage">
+          <div class="stage-head">
+            <b>第 {{ nums[selected] }} 轮生成的网页</b>
+            <span class="muted">↑ ↓ 切换</span>
+          </div>
+          <div class="frame">
+            <iframe
+              v-if="doc"
+              :key="selected"
+              :sandbox="PREVIEW_SANDBOX"
+              :srcdoc="doc"
+            ></iframe>
+            <n-empty v-else description="这一轮没有生成网页" style="margin: auto" />
           </div>
-          <iframe
-            v-if="selectedPageHtml"
-            :srcdoc="selectedPageHtml"
-            :key="selectedRound"
-            sandbox="allow-scripts"
-            style="
-              flex: 1;
-              border: 1px solid var(--wp-line);
-              border-radius: 6px;
-              background: var(--wp-surface);
-            "
-          />
-          <n-empty v-else description="该轮无网页代码" style="margin: auto" />
         </div>
       </div>
     </n-spin>
@@ -235,157 +102,441 @@
 </template>
 
 <script setup lang="ts">
-import { computed, ref, watch } from "vue"
-import { NPopconfirm, NButton, useMessage } from "naive-ui"
+import { computed, nextTick, onUnmounted, ref, watch } from "vue"
 import { Icon } from "../../icons"
+import { Showcase, Submission } from "../../api"
 import { renderMarkdown } from "../../utils/markdown"
-import { sourceLabel } from "../../utils/helper"
-import { storageShim } from "../../utils/previewStorage"
-import { Prompt, Submission } from "../../api"
+import { levelLabel, PROMPT_LEVELS, sourceLabel } from "../../utils/helper"
+import { buildPreviewDocument, PREVIEW_SANDBOX } from "../../utils/previewDocument"
 import type { PromptRound } from "../../utils/type"
-import { user, roleSuper } from "../../store/user"
-
-const message = useMessage()
 
+// 一份提交是怎么一轮一轮问出来的：左边每轮的提问，右边这一轮生成的网页
 const props = defineProps<{
   show: boolean
   submissionId: string
-  username?: string
+  // 例如“张三 · 个人名片”
+  title?: string
+  // 题目素材的地址，网页里的图片要用
+  assetBaseUrl?: string
+  // 作品展里的作品走作品展的接口（不用是老师或作者本人）
+  fromShowcase?: boolean
 }>()
-
-const canDelete = computed(
-  () =>
-    roleSuper.value || (!!props.username && props.username === user.username),
-)
-
-defineEmits<{ "update:show": [value: boolean] }>()
+const emit = defineEmits<{ "update:show": [value: boolean] }>()
 
 const loading = ref(false)
-const selectedRound = ref(0)
-const expandedRounds = ref<Set<number>>(new Set())
-type ChainRound = Omit<PromptRound, "source"> & {
-  source: string | null
-  assistantMsgId: number | null
-}
-const rounds = ref<ChainRound[]>([])
+const rounds = ref<PromptRound[]>([])
+const selected = ref(0)
+const expanded = ref(new Set<number>())
 
-async function deleteRound(index: number) {
-  const round = rounds.value[index]
-  if (!round.assistantMsgId) return
-  try {
-    await Prompt.deleteMessagePair(round.assistantMsgId)
-  } catch (error: any) {
-    message.error(error.response?.data?.detail ?? "删除失败，请重试")
-    return
-  }
-  await loadMessages()
-  if (selectedRound.value >= rounds.value.length) {
-    selectedRound.value = Math.max(0, rounds.value.length - 1)
-  }
-}
-
-const levelColors: Record<number, string> = {
-  1: "var(--wp-faint)",
-  2: "var(--wp-brand)",
-  3: "var(--wp-css)",
-  4: "#c47ab8",
-  5: "var(--wp-warn)",
-  6: "var(--wp-bad)",
-}
-
-const selectedPageHtml = computed(() => {
-  const round = rounds.value[selectedRound.value]
-  if (!round?.html) return null
-  const style = round.css ? `<style>${round.css}</style>` : ""
-  const script = round.js ? `<script>${round.js}<\/script>` : ""
-  return `<!DOCTYPE html><html><head><meta charset="utf-8">${storageShim()}${style}</head><body>${round.html}${script}</body></html>`
+// 引导对话（问怎么写提示词）夹在 AI 对话中间，不算轮数，也不能选中
+const isGuide = (r: PromptRound) => r.source === "guidance"
+const steps = computed(() => rounds.value.filter((r) => !isGuide(r)).length)
+const nums = computed(() => {
+  let n = 0
+  return rounds.value.map((r) => (isGuide(r) ? "" : String(++n)))
 })
 
-function isPromptLong(text: string): boolean {
-  return text.length > 220 || text.split(/\r?\n/).length > 4
+// 层级走势：每轮 AI 对话 / 外部 AI 一根柱子，两轮以上、有标过层级才显示
+const trend = computed(() =>
+  rounds.value.flatMap((r, i) => (isGuide(r) ? [] : [{ i, level: r.prompt_level }])),
+)
+const showTrend = computed(() => trend.value.length > 1 && trend.value.some((b) => b.level))
+
+// 和前面某一轮一字不差的提问（手改那一轮的正文都一样，不算）
+const repeats = computed(() => {
+  const seen = new Set<string>()
+  return rounds.value.map((r) => {
+    if (isGuide(r) || r.source === "edit") return false
+    const key = r.question.replace(/\s+/g, " ").trim()
+    const dup = seen.has(key)
+    seen.add(key)
+    return dup
+  })
+})
+
+// 这一轮的代码比上一版改了多少行：只按行内容数，不管顺序
+function codeLines(r: PromptRound) {
+  return [r.html, r.css, r.js]
+    .join("\n")
+    .split("\n")
+    .map((l) => l.trim())
+    .filter(Boolean)
 }
 
-function isExpanded(index: number): boolean {
-  return expandedRounds.value.has(index)
-}
-
-function toggleExpanded(index: number) {
-  const next = new Set(expandedRounds.value)
-  if (next.has(index)) {
-    next.delete(index)
-  } else {
-    next.add(index)
+function lineDiff(before: string[], after: string[]) {
+  const left = new Map<string, number>()
+  for (const l of before) left.set(l, (left.get(l) ?? 0) + 1)
+  let added = 0
+  for (const l of after) {
+    const n = left.get(l) ?? 0
+    if (n) left.set(l, n - 1)
+    else added++
   }
-  expandedRounds.value = next
+  const removed = before.length - (after.length - added)
+  return added || removed ? `+${added} −${removed} 行` : "代码没变"
 }
 
-async function loadMessages() {
-  if (!props.submissionId) return
+const changes = computed(() => {
+  let prev: string[] | null = null
+  return rounds.value.map((r) => {
+    if (isGuide(r) || !r.html) return ""
+    const cur = codeLines(r)
+    const text = prev ? lineDiff(prev, cur) : ""
+    prev = cur
+    return text
+  })
+})
+
+const doc = computed(() => {
+  const r = rounds.value[selected.value]
+  if (!r?.html) return ""
+  return buildPreviewDocument({
+    html: r.html,
+    css: r.css ?? "",
+    js: r.js ?? "",
+    assetBaseUrl: props.assetBaseUrl,
+  })
+})
+
+function isLong(text: string) {
+  return text.length > 200 || text.split(/\r?\n/).length > 4
+}
+
+function toggle(i: number) {
+  const next = new Set(expanded.value)
+  if (!next.delete(i)) next.add(i)
+  expanded.value = next
+}
+
+let seq = 0
+async function load() {
+  const s = ++seq
   loading.value = true
   rounds.value = []
-  selectedRound.value = 0
-  expandedRounds.value = new Set()
+  expanded.value = new Set()
   try {
-    const data = await Submission.getPromptChain(props.submissionId)
-    rounds.value = data.map((round) => ({
-      ...round,
-      source: round.source ?? null,
-      assistantMsgId: round.assistant_msg_id ?? null,
-    }))
-    const last = rounds.value.length - 1
-    if (last >= 0) selectedRound.value = last
+    const data = props.fromShowcase
+      ? await Showcase.getPromptChain(props.submissionId)
+      : await Submission.getPromptChain(props.submissionId)
+    if (s !== seq) return
+    rounds.value = data
+    // 默认看交的那一版
+    selected.value = Math.max(0, data.length - 1)
+    await nextTick()
+    document.querySelector(".rounds .round.on")?.scrollIntoView({ block: "nearest" })
   } catch {
-    rounds.value = []
+    if (s === seq) rounds.value = []
   } finally {
-    loading.value = false
+    if (s === seq) loading.value = false
   }
 }
 
+function select(i: number) {
+  selected.value = i
+  nextTick(() =>
+    document.querySelector(".rounds .round.on")?.scrollIntoView({ block: "nearest" }),
+  )
+}
+
+// 在捕获阶段接管按键：弹框开着时，批改页的 Esc / J / K、批改面板的 1–5 / P 都不能触发
+function onKey(e: KeyboardEvent) {
+  if (!props.show) return
+  e.stopPropagation()
+  if (e.key === "Escape") {
+    emit("update:show", false)
+    return
+  }
+  const step = e.key === "ArrowDown" ? 1 : e.key === "ArrowUp" ? -1 : 0
+  if (!step || !rounds.value.length) return
+  e.preventDefault()
+  let i = selected.value + step
+  while (rounds.value[i] && isGuide(rounds.value[i]!)) i += step
+  if (rounds.value[i]) select(i)
+}
+
 watch(
   () => [props.show, props.submissionId] as const,
   ([visible]) => {
-    if (visible) loadMessages()
+    if (visible) {
+      load()
+      window.addEventListener("keydown", onKey, true)
+    } else {
+      window.removeEventListener("keydown", onKey, true)
+    }
   },
+  { immediate: true },
 )
+onUnmounted(() => window.removeEventListener("keydown", onKey, true))
 </script>
 
 <style scoped>
-.prompt-markdown {
-  flex: 1;
+.head {
+  display: flex;
+  align-items: baseline;
+  gap: 10px;
   min-width: 0;
-  background: transparent;
-  color: inherit;
-  font-size: 13px;
-  line-height: 1.6;
 }
 
-.prompt-markdown.is-collapsed {
-  position: relative;
-  max-height: 126px;
+.title {
+  white-space: nowrap;
   overflow: hidden;
+  text-overflow: ellipsis;
 }
 
-.prompt-markdown :deep(p),
-.prompt-markdown :deep(ul),
-.prompt-markdown :deep(ol),
-.prompt-markdown :deep(blockquote),
-.prompt-markdown :deep(pre) {
-  margin-top: 0;
-  margin-bottom: 6px;
+.muted {
+  font-size: 12px;
+  font-weight: 400;
+  color: var(--wp-muted);
 }
 
-.prompt-markdown :deep(:last-child) {
-  margin-bottom: 0;
+.levels {
+  font-size: 13px;
+  line-height: 1.9;
 }
 
-.prompt-markdown :deep(pre) {
-  padding: 8px;
-  overflow-x: auto;
+.levels-note {
+  color: var(--wp-muted);
+}
+
+.body {
+  display: grid;
+  grid-template-columns: minmax(300px, 2fr) 3fr;
+  gap: 16px;
+  height: 72vh;
+}
+
+.left {
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.trend {
+  display: flex;
+  align-items: flex-end;
+  gap: 10px;
+  padding: 0 6px 6px 2px;
+  border-bottom: 1px solid var(--wp-line);
+}
+
+.bars {
+  flex: 1;
+  height: 38px;
+  display: flex;
+  align-items: flex-end;
+  gap: 3px;
+}
+
+.bar {
+  flex: 1;
+  max-width: 22px;
+  padding: 0;
+  border: 0;
+  border-radius: 2px 2px 0 0;
+  background: var(--wp-faint);
+  opacity: 0.55;
+  cursor: pointer;
+}
+
+.bar.none {
+  background: var(--wp-line);
+  opacity: 1;
+}
+
+.bar:hover,
+.bar.on {
+  opacity: 1;
+}
+
+.bar.on {
+  background: var(--wp-brand);
+}
+
+.rounds {
+  flex: 1;
+  min-height: 0;
+  margin: 0;
+  padding: 0 6px 0 0;
+  list-style: none;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.round {
+  padding: 8px 10px;
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  background: var(--wp-surface);
+  cursor: pointer;
+}
+
+.round:hover {
+  border-color: var(--wp-faint);
+}
+
+.round.on {
+  border-color: var(--wp-brand);
+  background: var(--wp-brand-soft);
+}
+
+.round-head {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-bottom: 4px;
   font-size: 12px;
 }
 
-.prompt-markdown :deep(code) {
-  white-space: pre-wrap;
+.num {
+  min-width: 18px;
+  font: 600 12px var(--wp-font-mono);
+  color: var(--wp-muted);
+}
+
+.round.on .num {
+  color: var(--wp-brand);
+}
+
+.src,
+.level,
+.repeat,
+.final {
+  padding: 0 6px;
+  border-radius: 4px;
+  line-height: 18px;
+  white-space: nowrap;
+}
+
+.src {
+  color: var(--wp-css);
+  background: var(--wp-css-soft);
+}
+
+.src-edit {
+  color: var(--wp-js);
+  background: var(--wp-js-soft);
+}
+
+.src-manual {
+  color: var(--wp-html);
+  background: var(--wp-html-soft);
+}
+
+.src-guidance {
+  color: var(--wp-muted);
+  background: var(--wp-paper);
+}
+
+.round.guide {
+  border-style: dashed;
+  background: transparent;
+  cursor: default;
+}
+
+.round.guide:hover {
+  border-color: var(--wp-line);
+}
+
+.round.guide .q {
+  color: var(--wp-muted);
+}
+
+.repeat {
+  color: var(--wp-warn);
+  background: var(--wp-warn-soft);
+}
+
+.level {
+  color: var(--wp-ink);
+  background: var(--wp-paper);
+  border: 1px solid var(--wp-line);
+}
+
+.final {
+  margin-left: auto;
+  color: var(--wp-brand);
+  font-weight: 600;
+}
+
+.no-code {
+  margin-left: auto;
+}
+
+.q {
+  background: transparent;
+  color: var(--wp-ink);
+  font-size: 13px;
+  line-height: 1.6;
   word-break: break-word;
 }
+
+.q.clamp {
+  max-height: 84px;
+  overflow: hidden;
+  -webkit-mask-image: linear-gradient(#000 55%, transparent);
+  mask-image: linear-gradient(#000 55%, transparent);
+}
+
+.q :deep(p),
+.q :deep(ul),
+.q :deep(ol),
+.q :deep(pre),
+.q :deep(blockquote) {
+  margin: 0 0 6px;
+}
+
+.q :deep(:last-child) {
+  margin-bottom: 0;
+}
+
+.q :deep(pre) {
+  padding: 6px 8px;
+  font-size: 12px;
+}
+
+.q :deep(code) {
+  white-space: pre-wrap;
+}
+
+.more {
+  margin-top: 4px;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: var(--wp-brand);
+  font: inherit;
+  font-size: 12px;
+  cursor: pointer;
+}
+
+.stage {
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.stage-head {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  font-size: 13px;
+}
+
+.frame {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.frame iframe {
+  flex: 1;
+  border: 0;
+}
 </style>

client/src/components/submissions/CodeModal.vue

@@ -1,42 +0,0 @@
-<template>
-  <n-modal
-    preset="card"
-    :show="show"
-    style="max-width: 60%"
-    @update:show="$emit('update:show', $event)"
-  >
-    <template #header>
-      <n-flex align="center">
-        <span>前端代码</span>
-        <n-button tertiary @click="$emit('copy-to-editor')"
-          >复制到编辑框</n-button
-        >
-      </n-flex>
-    </template>
-    <n-tabs animated type="segment">
-      <n-tab-pane name="html" tab="html">
-        <n-code :code="html" language="html" word-wrap />
-      </n-tab-pane>
-      <n-tab-pane name="css" tab="css">
-        <n-code :code="css" language="css" word-wrap />
-      </n-tab-pane>
-      <n-tab-pane v-if="!!js" name="js" tab="js">
-        <n-code :code="js" language="js" word-wrap />
-      </n-tab-pane>
-    </n-tabs>
-  </n-modal>
-</template>
-
-<script setup lang="ts">
-defineProps<{
-  show: boolean
-  html: string
-  css: string
-  js: string
-}>()
-
-defineEmits<{
-  "update:show": [value: boolean]
-  "copy-to-editor": []
-}>()
-</script>

client/src/components/submissions/ExpandedSubTable.vue

@@ -1,126 +0,0 @@
-<template>
-  <n-spin v-if="loading" size="small" style="padding: 12px" />
-  <n-data-table
-    v-else-if="items"
-    :columns="subColumns"
-    :data="items"
-    size="small"
-    striped
-    :row-key="(r: SubmissionOut) => r.id"
-    :row-props="rowProps"
-    :row-class-name="rowClassName"
-  />
-</template>
-
-<script setup lang="ts">
-import { computed, h } from "vue"
-import {
-  NButton,
-  NDataTable,
-  NPopconfirm,
-  NSpin,
-  type DataTableColumn,
-} from "naive-ui"
-import type { SubmissionOut } from "../../utils/type"
-import { TASK_TYPE } from "../../utils/const"
-import { parseTime } from "../../utils/helper"
-import { user, roleSuper } from "../../store/user"
-import { submission } from "../../store/submission"
-
-const props = defineProps<{
-  row: SubmissionOut
-  items: SubmissionOut[] | undefined
-  loading: boolean
-}>()
-
-const emit = defineEmits<{
-  select: [id: string]
-  delete: [row: SubmissionOut, parentId: string]
-  "show-chain": [submissionId: string, username: string]
-}>()
-
-const isChallenge = computed(() => props.row.task_type === TASK_TYPE.Challenge)
-
-function rowProps(r: SubmissionOut) {
-  return {
-    style: { cursor: "pointer" },
-    onClick: () => emit("select", r.id),
-  }
-}
-
-function rowClassName(r: SubmissionOut) {
-  return submission.value.id === r.id ? "row-active" : ""
-}
-
-const subColumns = computed((): DataTableColumn<SubmissionOut>[] => [
-  {
-    title: "时间",
-    key: "created",
-    width: 160,
-    render: (r) => parseTime(r.created, "YYYY-MM-DD HH:mm:ss"),
-  },
-  {
-    title: "得分",
-    key: "score",
-    width: 80,
-    render: (r) => {
-      const myScore = r.my_score > 0 ? String(r.my_score) : "-"
-      const avgScore = r.score > 0 ? r.score.toFixed(2) : "-"
-      return h(
-        "div",
-        { style: { display: "flex", gap: "6px", alignItems: "baseline" } },
-        [
-          h("span", avgScore),
-          h("span", { style: { fontSize: "11px", color: "var(--wp-faint)" } }, myScore),
-        ],
-      )
-    },
-  },
-  {
-    title: "操作",
-    key: "actions",
-    width: isChallenge.value ? 110 : 60,
-    render: (r: SubmissionOut) =>
-      h("div", { style: { display: "flex", gap: "8px" } }, [
-        ...(isChallenge.value
-          ? [
-              h(
-                NButton,
-                {
-                  text: true,
-                  type: "primary",
-                  onClick: (e: Event) => {
-                    e.stopPropagation()
-                    emit("show-chain", r.id, r.username)
-                  },
-                },
-                () => "查看",
-              ),
-            ]
-          : []),
-        ...(r.username === user.username || roleSuper.value
-          ? [
-              h(
-                NPopconfirm,
-                { onPositiveClick: () => emit("delete", r, props.row.id) },
-                {
-                  trigger: () =>
-                    h(
-                      NButton,
-                      {
-                        text: true,
-                        type: "error",
-                        size: "small",
-                        onClick: (e: Event) => e.stopPropagation(),
-                      },
-                      () => "删除",
-                    ),
-                  default: () => "确定删除这次提交？",
-                },
-              ),
-            ]
-          : []),
-      ]),
-  } as DataTableColumn<SubmissionOut>,
-])
-</script>

client/src/components/submissions/TaskTitle.vue

@@ -1,37 +0,0 @@
-<template>
-  <n-flex>
-    <n-tag
-      size="small"
-      :bordered="false"
-      type="primary"
-      v-if="props.submission.task_type === 'tutorial'"
-    >
-      教程
-    </n-tag>
-    <n-tag
-      :bordered="false"
-      size="small"
-      type="error"
-      v-if="props.submission.task_type === 'challenge'"
-    >
-      挑战
-    </n-tag>
-    <n-button text @click="open">{{ props.submission.task_title }}</n-button>
-  </n-flex>
-</template>
-<script setup lang="ts">
-import { useRouter } from "vue-router"
-import type { SubmissionOut } from "../../utils/type"
-import { goHome } from "../../utils/helper"
-
-interface Props {
-  submission: SubmissionOut
-}
-
-const props = defineProps<Props>()
-
-const router = useRouter()
-function open() {
-  goHome(router, props.submission.task_type, props.submission.task_display)
-}
-</script>

client/src/components/task/TaskAssetManager.vue

@@ -1,78 +1,57 @@
 <template>
-  <n-flex vertical>
-    <n-button size="small" @click="showUpload = true">图片素材</n-button>
-    <n-flex v-if="assets.length" wrap>
-      <n-card
-        v-for="asset in assets"
-        :key="asset.name"
-        size="small"
-        style="width: 120px"
-      >
-        <template #cover>
-          <n-image
-            :src="asset.url"
-            style="width: 100%; height: 100px; object-fit: contain"
-          />
-        </template>
-        <n-flex align="center" justify="space-between">
-          <n-text style="font-size: 12px; word-break: break-all">
-            {{ asset.name }}
-          </n-text>
-          <n-button
-            size="tiny"
-            quaternary
-            type="error"
-            @click="remove(asset.name)"
-          >
-            <template #icon>
-              <Icon icon="material-symbols:close-rounded" />
-            </template>
-          </n-button>
-        </n-flex>
-      </n-card>
-    </n-flex>
+  <n-button @click="show = true">
+    图片素材{{ assets.length ? `（${assets.length}）` : "" }}
+  </n-button>
 
-    <n-modal
-      v-model:show="showUpload"
-      preset="card"
-      title="上传素材"
-      style="width: 400px"
+  <n-modal v-model:show="show" preset="card" title="图片素材" style="width: min(720px, 92vw)">
+    <p class="hint">
+      题目和学生的网页里直接写文件名就能用，例如
+      <code>&lt;img src="{{ assets[0]?.name ?? "1.png" }}"&gt;</code>。
+      上传同名文件会替换原来的。
+    </p>
+
+    <label
+      :class="['drop', { over: dragging }]"
+      @dragover.prevent="dragging = true"
+      @dragleave="dragging = false"
+      @drop.prevent="onDrop"
     >
-      <n-form>
-        <n-form-item label="文件名（如 1.png）">
-          <n-input v-model:value="uploadName" placeholder="1.png" />
-        </n-form-item>
-        <n-form-item label="选择文件">
-          <n-upload :max="1" @change="onFileChange" :default-upload="false">
-            <n-button>选择文件</n-button>
-          </n-upload>
-        </n-form-item>
-      </n-form>
-      <template #footer>
-        <n-flex justify="end">
-          <n-button @click="showUpload = false">取消</n-button>
-          <n-button
-            type="primary"
-            :disabled="!uploadName || !uploadFile"
-            :loading="uploading"
-            @click="upload"
-          >
-            上传
-          </n-button>
-        </n-flex>
-      </template>
-    </n-modal>
-  </n-flex>
+      <input type="file" accept="image/*" multiple hidden @change="onPick" />
+      <Icon icon="lucide:image" :width="22" />
+      <span v-if="uploading">正在上传…</span>
+      <span v-else>点这里选图片，或者把图片拖进来（可以一次选多张）</span>
+    </label>
+
+    <div v-if="assets.length" class="grid">
+      <div v-for="a in assets" :key="a.name" class="asset">
+        <div class="img">
+          <img :src="a.url" :alt="a.name" loading="lazy" />
+        </div>
+        <div class="name" :title="a.name">{{ a.name }}</div>
+        <div class="tools">
+          <n-button size="tiny" quaternary @click="copyName(a.name)">复制文件名</n-button>
+          <n-popconfirm @positive-click="remove(a.name)">
+            <template #trigger>
+              <n-button size="tiny" quaternary type="error">删除</n-button>
+            </template>
+            删除 {{ a.name }}？用到它的网页里图片会显示不出来。
+          </n-popconfirm>
+        </div>
+      </div>
+    </div>
+    <n-empty v-else description="还没有素材" style="margin: 24px 0 8px" />
+  </n-modal>
 </template>
 
 <script lang="ts" setup>
 import { ref, watch } from "vue"
-import { Icon } from "../../icons"
 import { useMessage } from "naive-ui"
-import type { UploadFileInfo } from "naive-ui"
+import copy from "copy-text-to-clipboard"
+import { Icon } from "../../icons"
 import { TaskAssets } from "../../api"
 import type { TaskAsset } from "../../utils/type"
 
+// 出题页的图片素材：存在 /media/tasks/<类型>/<序号>/ 下，预览时那里是网页的 base 地址
 const props = defineProps<{
   taskType: "challenge" | "tutorial"
   display: number
@@ -80,10 +59,9 @@ const props = defineProps<{
 
 const message = useMessage()
 const assets = ref<TaskAsset[]>([])
-const showUpload = ref(false)
-const uploadName = ref("")
-const uploadFile = ref<File | null>(null)
+const show = ref(false)
 const uploading = ref(false)
+const dragging = ref(false)
 
 async function load() {
   if (!props.display) return
@@ -97,40 +75,56 @@ async function load() {
   }
 }
 
-function onFileChange({ file }: { file: UploadFileInfo }) {
-  if (file.status === "pending") {
-    uploadFile.value = file.file ?? null
-  }
+// 和服务端的 validFilename 一样：空格换成下划线，只留字母（含中文）、数字和 - _ .
+function cleanName(name: string) {
+  return name.trim().replaceAll(" ", "_").replace(/[^-\p{L}\p{N}_.]/gu, "").slice(-100)
 }
 
-async function upload() {
-  if (!uploadName.value || !uploadFile.value) return
+async function uploadAll(files: File[]) {
+  const images = files.filter((f) => f.type.startsWith("image/"))
+  if (images.length < files.length) message.warning("只能上传图片，其他文件跳过了")
+  if (!images.length) return
   uploading.value = true
-  try {
-    const asset =
-      props.taskType === "challenge"
-        ? await TaskAssets.uploadChallenge(
-            props.display,
-            uploadName.value,
-            uploadFile.value,
-          )
-        : await TaskAssets.uploadTutorial(
-            props.display,
-            uploadName.value,
-            uploadFile.value,
-          )
-    const idx = assets.value.findIndex((a) => a.name === asset.name)
-    if (idx >= 0) assets.value[idx] = asset
-    else assets.value.push(asset)
-    message.success(`${asset.name} 上传成功`)
-    showUpload.value = false
-    uploadName.value = ""
-    uploadFile.value = null
-  } catch (err: any) {
-    message.error(err?.response?.data?.detail ?? "上传失败")
-  } finally {
-    uploading.value = false
+  let done = 0
+  for (const file of images) {
+    const name = cleanName(file.name)
+    if (!name || name.startsWith(".")) {
+      message.error(`文件名“${file.name}”不能用，请改个名字再传`)
+      continue
+    }
+    try {
+      const asset =
+        props.taskType === "challenge"
+          ? await TaskAssets.uploadChallenge(props.display, name, file)
+          : await TaskAssets.uploadTutorial(props.display, name, file)
+      const i = assets.value.findIndex((a) => a.name === asset.name)
+      // 同名替换后浏览器可能还用着旧图的缓存
+      const fresh = { ...asset, url: `${asset.url}?t=${Date.now()}` }
+      if (i >= 0) assets.value[i] = fresh
+      else assets.value.push(fresh)
+      done++
+    } catch (err: any) {
+      message.error(`${name}：${err?.response?.data?.detail ?? "上传失败"}`)
+    }
   }
+  uploading.value = false
+  if (done) message.success(`上传了 ${done} 张`)
+}
+
+function onPick(e: Event) {
+  const input = e.target as HTMLInputElement
+  uploadAll([...(input.files ?? [])])
+  input.value = ""
+}
+
+function onDrop(e: DragEvent) {
+  dragging.value = false
+  uploadAll([...(e.dataTransfer?.files ?? [])])
+}
+
+function copyName(name: string) {
+  copy(name)
+  message.success(`已复制 ${name}`)
 }
 
 async function remove(name: string) {
@@ -139,7 +133,7 @@ async function remove(name: string) {
       ? await TaskAssets.deleteChallenge(props.display, name)
       : await TaskAssets.deleteTutorial(props.display, name)
     assets.value = assets.value.filter((a) => a.name !== name)
-    message.success("删除成功")
+    message.success("已删除")
   } catch (err: any) {
     message.error(err?.response?.data?.detail ?? "删除失败")
   }
@@ -147,3 +141,85 @@ async function remove(name: string) {
 
 watch(() => props.display, load, { immediate: true })
 </script>
+
+<style scoped>
+.hint {
+  margin: 0 0 12px;
+  font-size: 13px;
+  line-height: 1.7;
+  color: var(--wp-muted);
+}
+
+.hint code {
+  padding: 1px 5px;
+  border-radius: 4px;
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-ink);
+  background: var(--wp-paper);
+}
+
+.drop {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  padding: 18px;
+  border: 1px dashed var(--wp-line);
+  border-radius: 8px;
+  font-size: 13px;
+  color: var(--wp-muted);
+  background: var(--wp-paper);
+  cursor: pointer;
+}
+
+.drop:hover,
+.drop.over {
+  border-color: var(--wp-brand);
+  color: var(--wp-brand);
+}
+
+.grid {
+  margin-top: 14px;
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
+  gap: 12px;
+  max-height: 50vh;
+  overflow-y: auto;
+}
+
+.asset {
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.img {
+  height: 100px;
+  display: grid;
+  place-items: center;
+  overflow: hidden;
+  border-bottom: 1px solid var(--wp-line);
+  /* 透明图片放在浅色底上才看得出边界 */
+  background: var(--wp-paper);
+}
+
+.img img {
+  display: block;
+  max-width: 100%;
+  max-height: 100px;
+}
+
+.name {
+  padding: 6px 8px 0;
+  font: 12px var(--wp-font-mono);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.tools {
+  display: flex;
+  justify-content: space-between;
+  padding: 2px 4px 4px;
+}
+</style>

client/src/components/task/TaskPanel.vue

@@ -41,7 +41,7 @@
           quaternary
           @click="showPeers = true"
         >
-          同学作品
+          作品
         </n-button>
         <n-button v-if="roleSuper" size="small" quaternary @click="edit">
           <template #icon><Icon icon="lucide:edit" /></template>

client/src/components/workbench/PasteCodeModal.vue

@@ -5,12 +5,16 @@
     title="粘贴外部 AI 生成的代码"
     style="width: 640px; max-width: 94vw"
   >
-    <n-form-item label="你在外部 AI 里用的提示词" :show-feedback="false">
+    <n-form-item
+      label="你在外部 AI 里说了什么"
+      :validation-status="promptTooShort ? 'warning' : undefined"
+      :feedback="promptTooShort ? `再写具体一点：你让 AI 做了什么、改了什么（至少 ${MIN_PROMPT} 个字）` : ''"
+    >
       <n-input
         v-model:value="prompt"
         type="textarea"
         :autosize="{ minRows: 2, maxRows: 6 }"
-        placeholder="把你发给豆包、DeepSeek 等 AI 的话粘贴到这里"
+        placeholder="把你发给豆包、DeepSeek 等 AI 的话粘贴到这里；说了好几轮的，每一轮都贴进来，一轮一行"
       />
     </n-form-item>
     <n-form-item label="完整的网页代码" :show-feedback="false" style="margin-top: 12px">
@@ -30,7 +34,7 @@
         <n-button @click="show = false">取消</n-button>
         <n-button
           type="primary"
-          :disabled="!prompt.trim() || !raw.trim()"
+          :disabled="[...prompt.trim()].length < MIN_PROMPT || !raw.trim()"
           :loading="saving"
           @click="save"
         >
@@ -41,7 +45,7 @@
   </n-modal>
 </template>
 <script lang="ts" setup>
-import { ref } from "vue"
+import { computed, ref } from "vue"
 import { splitHtml, type Code } from "../../utils/code"
 
 const show = defineModel<boolean>("show", { required: true })
@@ -50,6 +54,12 @@ const props = defineProps<{
 }>()
 
 const prompt = ref("")
+// 以前四分之一的外部提示词只有“1”“倒计时”这样几个字，看不出学生想了什么
+const MIN_PROMPT = 8
+const promptTooShort = computed(() => {
+  const n = [...prompt.value.trim()].length
+  return n > 0 && n < MIN_PROMPT
+})
 const raw = ref("")
 const saving = ref(false)
 

client/src/components/workbench/RatingCard.vue

@@ -1,67 +1,60 @@
 <template>
-  <div v-if="current || revealed" class="rating-card">
-    <div class="head">
-      <span>等 AI 的时候，给同学的作品打个分</span>
-      <n-button v-if="current" text size="tiny" @click="next(true)">跳过</n-button>
-    </div>
+  <n-modal
+    :show="!!(current || revealed)"
+    preset="card"
+    :title="done ? 'AI 写好了' : '等 AI 写代码的时候，给同学的作品打个分'"
+    :closable="false"
+    :mask-closable="false"
+    :close-on-esc="false"
+    :auto-focus="false"
+    style="width: 90vw; max-width: 1000px"
+  >
+    <template #header-extra>
+      <n-button v-if="done" type="primary" size="small" @click="close"
+        >看结果</n-button
+      >
+      <n-button v-else-if="current" text size="small" @click="next(true)"
+        >跳过这份</n-button
+      >
+    </template>
     <div v-if="revealed" class="revealed">
       刚才那份是 <b>{{ revealed }}</b> 的作品，谢谢你的评分
     </div>
-    <div v-else-if="current" class="body">
-      <button class="thumb" title="点击放大看" @click="showLarge = true">
+    <template v-else-if="current">
+      <div class="task">{{ current.task_title }}</div>
+      <div class="large">
         <iframe
+          :key="current.submission_id"
           :sandbox="PREVIEW_SANDBOX"
           :srcdoc="doc"
-          tabindex="-1"
-          loading="lazy"
         ></iframe>
-      </button>
-      <div class="info">
-        <div class="task">{{ current.task_title }}</div>
-        <div class="rates">
-          <n-tooltip v-for="s in scores" :key="s.value">
-            <template #trigger>
-              <button class="rate" :disabled="rating" @click="rate(s.value)">
-                {{ s.value }}
-              </button>
-            </template>
-            {{ s.value }} 分：{{ s.label }}
-          </n-tooltip>
-        </div>
-        <div class="legend">1 没完成 · 3 基本完成 · 5 完成且有自己的想法</div>
       </div>
-    </div>
-  </div>
-  <n-modal
-    v-model:show="showLarge"
-    preset="card"
-    :title="current ? `同学的作品 · ${current.task_title}` : '同学的作品'"
-    style="width: 90vw; max-width: 1000px"
-  >
-    <div class="large">
-      <iframe :sandbox="PREVIEW_SANDBOX" :srcdoc="doc"></iframe>
-    </div>
-    <div class="large-rates">
-      <button
-        v-for="s in scores"
-        :key="s.value"
-        class="rate wide"
-        :disabled="rating"
-        @click="rate(s.value)"
-      >
-        <b>{{ s.value }}</b> {{ s.label }}
-      </button>
-    </div>
+      <div class="rates">
+        <button
+          v-for="s in scores"
+          :key="s.value"
+          class="rate"
+          :disabled="rating"
+          @click="rate(s.value)"
+        >
+          <b>{{ s.value }}</b> {{ s.label }}
+        </button>
+      </div>
+    </template>
   </n-modal>
 </template>
 <script lang="ts" setup>
 import { computed, ref, watch } from "vue"
 import { useMessage } from "naive-ui"
 import { Submission } from "../../api"
-import { buildPreviewDocument, PREVIEW_SANDBOX } from "../../utils/previewDocument"
+import {
+  buildPreviewDocument,
+  PREVIEW_SANDBOX,
+} from "../../utils/previewDocument"
 import type { RandomRatingItem } from "../../utils/type"
 
-// AI 生成期间在对话里显示一份同学的作品让学生打分。打分前不显示作者，减少给熟人打高分
+// AI 生成期间弹框遮住页面，让学生给一份同学的作品打分（学生只关心结果，不用盯着代码一行行出来）。
+// 打分前不显示作者，减少给熟人打高分。AI 写完时正在看的这份不收走，换成“看结果”按钮
 const props = defineProps<{ active: boolean }>()
 const message = useMessage()
 
@@ -76,7 +69,7 @@ const scores = [
 const current = ref<RandomRatingItem | null>(null)
 const revealed = ref("")
 const rating = ref(false)
-const showLarge = ref(false)
+const done = ref(false)
 let seq = 0
 
 const doc = computed(() =>
@@ -102,6 +95,13 @@ async function next(skip = false) {
   }
 }
 
+function close() {
+  seq++
+  current.value = null
+  revealed.value = ""
+  done.value = false
+}
+
 async function rate(score: number) {
   if (!current.value) return
   rating.value = true
@@ -109,10 +109,12 @@ async function rate(score: number) {
     const res = await Submission.updateScore(current.value.submission_id, score)
     revealed.value = res.username ?? "同学"
     current.value = null
-    showLarge.value = false
+    const s = seq
     setTimeout(() => {
+      if (s !== seq) return
       revealed.value = ""
       if (props.active) next()
+      else done.value = false
     }, 1800)
   } catch (err: any) {
     message.error(err.response?.data?.detail ?? "打分失败，请重试")
@@ -124,85 +126,60 @@ async function rate(score: number) {
 watch(
   () => props.active,
   (active) => {
-    if (active) next()
-    else {
+    if (active) {
+      done.value = false
+      next()
+    } else if (current.value) {
       seq++
-      current.value = null
-      revealed.value = ""
-      showLarge.value = false
+      done.value = true
+    } else {
+      close()
     }
   },
   { immediate: true },
 )
 </script>
 <style scoped>
-.rating-card {
-  margin: 4px 0 16px;
-  padding: 10px 12px;
-  border: 1px solid var(--wp-line);
-  border-radius: 8px;
-  background: var(--wp-surface);
-}
-
-.head {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  font-size: 12px;
-  color: var(--wp-muted);
+.task {
+  font-weight: 600;
   margin-bottom: 8px;
 }
 
-.body {
-  display: grid;
-  grid-template-columns: 132px 1fr;
-  gap: 12px;
-  align-items: center;
-}
-
-.thumb {
-  position: relative;
-  width: 132px;
-  height: 84px;
-  padding: 0;
+.large {
+  height: 60vh;
   border: 1px solid var(--wp-line);
   border-radius: 6px;
   overflow: hidden;
-  cursor: zoom-in;
-  background: var(--wp-surface);
 }
 
-/* 按 4 倍大小渲染再缩小，看起来像网页缩略图 */
-.thumb iframe {
-  width: 528px;
-  height: 336px;
+.large iframe {
+  width: 100%;
+  height: 100%;
   border: 0;
-  transform: scale(0.25);
-  transform-origin: 0 0;
-  pointer-events: none;
-}
-
-.task {
-  font-weight: 600;
-  margin-bottom: 6px;
 }
 
 .rates {
   display: flex;
-  gap: 6px;
+  gap: 8px;
+  margin-top: 12px;
 }
 
 .rate {
-  min-width: 32px;
-  padding: 4px 0;
+  flex: 1;
+  padding: 8px;
   border: 1px solid var(--wp-line);
   border-radius: 6px;
   background: var(--wp-surface);
   color: var(--wp-ink);
-  font: 600 13px var(--wp-font-mono);
+  font: 13px var(--wp-font-sans);
   cursor: pointer;
 }
 
+.rate b {
+  font-family: var(--wp-font-mono);
+  margin-right: 4px;
+}
+
 .rate:hover:not(:disabled) {
   border-color: var(--wp-brand);
   background: var(--wp-brand-soft);
@@ -214,44 +191,10 @@ watch(
   outline-offset: 1px;
 }
 
-.legend {
-  margin-top: 6px;
-  font-size: 11px;
-  color: var(--wp-faint);
-}
-
 .revealed {
-  font-size: 13px;
+  padding: 48px 0;
+  text-align: center;
+  font-size: 15px;
   color: var(--wp-muted);
 }
-
-.large {
-  height: 65vh;
-  border: 1px solid var(--wp-line);
-  border-radius: 6px;
-  overflow: hidden;
-}
-
-.large iframe {
-  width: 100%;
-  height: 100%;
-  border: 0;
-}
-
-.large-rates {
-  display: flex;
-  gap: 8px;
-  margin-top: 12px;
-}
-
-.rate.wide {
-  flex: 1;
-  padding: 8px;
-  font: 13px var(--wp-font-sans);
-}
-
-.rate.wide b {
-  font-family: var(--wp-font-mono);
-  margin-right: 4px;
-}
 </style>

client/src/components/workbench/SubmitModal.vue

@@ -0,0 +1,67 @@
+<template>
+  <n-modal
+    v-model:show="show"
+    preset="card"
+    :title="title"
+    style="width: 520px; max-width: 94vw"
+    :mask-closable="!saving"
+  >
+    <div class="question">
+      {{ hasEarlier ? "比起第一版，这一版你最满意的改动是什么？为什么这样改？" : "这一版你最满意的地方是什么？为什么？" }}
+    </div>
+    <n-input
+      v-model:value="reflection"
+      type="textarea"
+      :autosize="{ minRows: 3, maxRows: 6 }"
+      :maxlength="500"
+      placeholder="比如：我把按钮从五个减到三个，因为按钮太多了看不出先点哪个"
+    />
+    <n-text depth="3" class="hint">可以不写，直接交。写了的话，老师批改时能看到。</n-text>
+    <template #footer>
+      <n-flex justify="end">
+        <n-button :disabled="saving" @click="show = false">取消</n-button>
+        <n-button type="primary" :loading="saving" @click="save">交</n-button>
+      </n-flex>
+    </template>
+  </n-modal>
+</template>
+<script lang="ts" setup>
+import { ref } from "vue"
+
+// 交作品前问一句反思：最满意的改动和理由。不拦着交，只是让学生回头看一眼自己改了什么
+const show = defineModel<boolean>("show", { required: true })
+const props = defineProps<{
+  title: string
+  // 之前还有别的版本，就问“比起第一版”
+  hasEarlier: boolean
+  onSubmit: (reflection: string) => Promise<void>
+}>()
+
+const reflection = ref("")
+const saving = ref(false)
+
+async function save() {
+  saving.value = true
+  try {
+    await props.onSubmit(reflection.value.trim())
+    reflection.value = ""
+    show.value = false
+  } finally {
+    saving.value = false
+  }
+}
+</script>
+<style scoped>
+.question {
+  margin-bottom: 10px;
+  font-size: 14px;
+  line-height: 1.6;
+  color: var(--wp-ink);
+}
+
+.hint {
+  display: block;
+  margin-top: 8px;
+  font-size: 12px;
+}
+</style>

client/src/components/workbench/Workbench.vue

@@ -103,6 +103,12 @@
     </template>
   </n-split>
   <PasteCodeModal v-model:show="showPaste" :on-save="savePasted" />
+  <SubmitModal
+    v-model:show="showSubmit"
+    :title="submitTitle"
+    :has-earlier="submitHasEarlier"
+    :on-submit="submitChallenge"
+  />
   <n-drawer v-model:show="showHistory" :width="420" placement="right">
     <n-drawer-content title="全部历史" :native-scrollbar="false" body-content-style="padding: 0">
       <PromptHistoryPanel
@@ -128,6 +134,7 @@ import Preview from "../editor/Preview.vue"
 import CodeTabs from "./CodeTabs.vue"
 import VersionBar, { type VersionItem } from "./VersionBar.vue"
 import PasteCodeModal from "./PasteCodeModal.vue"
+import SubmitModal from "./SubmitModal.vue"
 import { Prompt, Submission } from "../../api"
 import { useTaskCode } from "../../composables/useTaskCode"
 import {
@@ -174,6 +181,7 @@ const selectedId = ref<number | null>(null)
 const busy = ref(false)
 const briefOpen = ref(true)
 const showPaste = ref(false)
+const showSubmit = ref(false)
 const showHistory = ref(false)
 const historyKey = ref(0)
 
@@ -308,21 +316,46 @@ function openHistory() {
 }
 
 async function submit() {
+  if (props.kind === "challenge") {
+    showSubmit.value = true
+    return
+  }
+  busy.value = true
+  try {
+    await props.saveWork?.({ ...code })
+    message.success("作品已保存")
+  } catch (err: any) {
+    message.error(err.response?.data?.detail ?? "保存失败，请重试")
+  } finally {
+    busy.value = false
+  }
+}
+
+const submitTitle = computed(() => {
+  if (modified.value || !selectedId.value) return "交当前修改"
+  const n = versions.value.find((v) => v.id === selectedId.value)?.n
+  return n ? `交 v${n}` : "交这一版"
+})
+
+// 要交的这一版之前还有版本（当前修改会存成新的一版）
+const submitHasEarlier = computed(() => {
+  if (modified.value || !selectedId.value) return versions.value.length > 0
+  return (versions.value.find((v) => v.id === selectedId.value)?.n ?? 1) > 1
+})
+
+// 挑战：先在弹框里写一句反思（可以不写）再交；出错时抛出去，弹框不关
+async function submitChallenge(reflection: string) {
   busy.value = true
   try {
-    if (props.kind === "creation") {
-      await props.saveWork?.({ ...code })
-      message.success("作品已保存")
-      return
-    }
     const id =
       modified.value || !selectedId.value ? await saveAsVersion() : selectedId.value
-    await Submission.create(props.taskId, { ...code }, id)
+    await Submission.create(props.taskId, { ...code }, id, reflection)
     markMessageSubmitted(id)
     const n = versions.value.find((v) => v.id === id)?.n
     message.success(n ? `已提交 v${n}` : "已提交")
   } catch (err: any) {
     message.error(err.response?.data?.detail ?? "提交失败，请重试")
+    throw err
   } finally {
     busy.value = false
   }

client/src/icons.ts

@@ -4,6 +4,7 @@ import {
   ArrowRight,
   Award,
   BookOpen,
+  Bug,
   ChartNoAxesColumn,
   Check,
   ChevronDown,
@@ -19,6 +20,8 @@ import {
   Lightbulb,
   List,
   Lock,
+  Maximize2,
+  Minimize2,
   LogOut,
   Monitor,
   Moon,
@@ -47,6 +50,7 @@ const registry: Record<string, Component> = {
   "arrow-right": ArrowRight,
   award: Award,
   "book-open": BookOpen,
+  bug: Bug,
   "bar-chart-2": ChartNoAxesColumn,
   check: Check,
   "chevron-down": ChevronDown,
@@ -54,6 +58,8 @@ const registry: Record<string, Component> = {
   "chevron-up": ChevronUp,
   globe: Globe,
   lock: Lock,
+  "maximize-2": Maximize2,
+  "minimize-2": Minimize2,
   "check-circle": CircleCheck,
   download: Download,
   eye: Eye,

client/src/pages/ChallengeDetail.vue

@@ -15,7 +15,7 @@
       </n-tag>
     </template>
     <template #tools>
-      <n-button quaternary size="small" @click="showPeers = true">同学作品</n-button>
+      <n-button quaternary size="small" @click="showPeers = true">作品</n-button>
       <n-button v-if="assets.length" quaternary size="small" @click="showAssets = true">
         素材
       </n-button>
@@ -25,7 +25,7 @@
             <Icon :width="16" icon="lucide:bar-chart-2" />
           </n-button>
         </template>
-        本题统计
+        课堂总结
       </n-tooltip>
       <n-tooltip v-if="roleSuper">
         <template #trigger>
@@ -53,7 +53,7 @@
       </div>
     </template>
   </Workbench>
-  <TaskStatsModal v-model:show="showStats" :task-id="taskId" />
+  <TaskStatsModal v-model:show="showStats" :task-id="taskId" :title="title" />
   <PeersDrawer v-model:show="showPeers" :task-id="taskId" :asset-base-url="assetBaseUrl" />
   <n-modal
     v-model:show="showAssets"

client/src/pages/CreationHome.vue

@@ -1,59 +1,48 @@
 <template>
   <main class="creation-home">
-    <n-flex
-      justify="space-between"
-      align="flex-end"
-      style="margin-bottom: 32px"
-    >
+    <header class="head">
       <div>
-        <n-h2 style="margin: 0">自由创作</n-h2>
-        <n-text depth="3">自己定一个主题，和 AI 一起把它做出来</n-text>
+        <h2>自由创作</h2>
+        <p class="sub">自己定一个主题，和 AI 一起把它做出来。不用交，也不打分</p>
       </div>
-      <n-button type="primary" @click="openCreate">
-        <template #icon>
-          <Icon icon="lucide:plus" :width="16" />
-        </template>
+      <n-button type="primary" @click="openCreate()">
+        <template #icon><Icon icon="lucide:plus" /></template>
         新建主题
       </n-button>
-    </n-flex>
+    </header>
 
     <n-spin :show="loading">
-      <n-empty
-        v-if="!loading && !creations.length"
-        description="还没有创作，点右上角新建一个主题吧"
-        style="margin-top: 72px"
-      />
-      <div v-else class="card-grid">
-        <n-card
-          v-for="item in creations"
-          :key="item.display"
-          class="creation-card"
-          hoverable
-          @click="open(item)"
-        >
-          <template #header>
-            <n-ellipsis style="max-width: 100%">{{ item.title }}</n-ellipsis>
-          </template>
-          <template #header-extra>
-            <n-flex :size="4" align="center">
-              <n-tag v-if="item.has_code" type="success" size="small">
-                已有作品
-              </n-tag>
-              <n-button text @click.stop="remove(item)">
-                <Icon icon="lucide:trash-2" :width="15" />
-              </n-button>
-            </n-flex>
-          </template>
-          <n-ellipsis :line-clamp="2" class="creation-desc">
-            {{ item.content || "还没写主题描述" }}
-          </n-ellipsis>
-          <template #footer>
-            <n-text depth="3" style="font-size: 12px">
-              更新于 {{ formatTime(item.modified) }}
-            </n-text>
-          </template>
-        </n-card>
+      <div v-if="!loading && !creations.length" class="empty">
+        <p>还没有创作。不知道做什么？从这些开始：</p>
+        <div class="ideas">
+          <button v-for="idea in IDEAS" :key="idea.title" class="idea" @click="openCreate(idea)">
+            <b>{{ idea.title }}</b>
+            <span>{{ idea.content }}</span>
+          </button>
+        </div>
       </div>
+      <ol v-else class="list">
+        <li v-for="item in creations" :key="item.display">
+          <router-link class="row" :to="{ name: 'creation', params: { display: item.display } }">
+            <span class="main">
+              <span class="title">{{ item.title }}</span>
+              <span class="desc">{{ item.content || "还没写主题描述" }}</span>
+            </span>
+            <span :class="['state', { done: item.has_code }]">
+              {{ item.has_code ? "已有作品" : "还没开始" }}
+            </span>
+            <span class="time">{{ formatTime(item.modified) }}</span>
+            <n-popconfirm @positive-click="remove(item)">
+              <template #trigger>
+                <n-button text class="del" title="删除" @click.prevent.stop>
+                  <Icon icon="lucide:trash-2" :width="15" />
+                </n-button>
+              </template>
+              删除「{{ item.title }}」？和它相关的对话也会一起删掉。
+            </n-popconfirm>
+          </router-link>
+        </li>
+      </ol>
     </n-spin>
 
     <n-modal
@@ -65,6 +54,7 @@
       <n-form>
         <n-form-item label="主题名称">
           <n-input
+            ref="titleRef"
             v-model:value="form.title"
             placeholder="例如：我的番茄钟"
             maxlength="100"
@@ -98,22 +88,30 @@
 </template>
 
 <script setup lang="ts">
-import { onMounted, reactive, ref } from "vue"
+import { nextTick, onMounted, reactive, ref } from "vue"
 import { useRouter } from "vue-router"
-import { useDialog, useMessage } from "naive-ui"
+import { useMessage } from "naive-ui"
 import { Icon } from "../icons"
 import { Creation } from "../api"
 import type { CreationSlim } from "../utils/type"
 
 const router = useRouter()
 const message = useMessage()
-const dialog = useDialog()
 
 const loading = ref(true)
 const creating = ref(false)
 const showCreate = ref(false)
 const creations = ref<CreationSlim[]>([])
 const form = reactive({ title: "", content: "" })
+const titleRef = ref<{ focus: () => void } | null>(null)
+
+// 一个创作都没有时给几个主题点子，点了带进新建框
+const IDEAS = [
+  { title: "番茄钟", content: "25 分钟倒计时，能开始、暂停、重置，时间到了提醒我休息" },
+  { title: "我的个人主页", content: "头像、自我介绍、爱好，再放几张喜欢的图片" },
+  { title: "点击小游戏", content: "方块随机出现，点中加分，30 秒后显示得分" },
+  { title: "今日待办", content: "能添加、勾选完成、删除待办，刷新后还在" },
+]
 
 function formatTime(value: string) {
   return new Date(value).toLocaleString("zh-CN", {
@@ -124,14 +122,11 @@ function formatTime(value: string) {
   })
 }
 
-function open(item: CreationSlim) {
-  router.push({ name: "creation", params: { display: item.display } })
-}
-
-function openCreate() {
-  form.title = ""
-  form.content = ""
+function openCreate(idea?: { title: string; content: string }) {
+  form.title = idea?.title ?? ""
+  form.content = idea?.content ?? ""
   showCreate.value = true
+  nextTick(() => titleRef.value?.focus())
 }
 
 async function submit() {
@@ -149,24 +144,14 @@ async function submit() {
   }
 }
 
-function remove(item: CreationSlim) {
-  dialog.warning({
-    title: "删除主题",
-    content: `确定删除「${item.title}」吗？和它相关的对话也会一起删除。`,
-    positiveText: "删除",
-    negativeText: "取消",
-    onPositiveClick: async () => {
-      try {
-        await Creation.remove(item.display)
-        creations.value = creations.value.filter(
-          (c) => c.display !== item.display,
-        )
-        message.success("已删除")
-      } catch {
-        message.error("删除失败，请重试")
-      }
-    },
-  })
+async function remove(item: CreationSlim) {
+  try {
+    await Creation.remove(item.display)
+    creations.value = creations.value.filter((c) => c.display !== item.display)
+    message.success("已删除")
+  } catch {
+    message.error("删除失败，请重试")
+  }
 }
 
 onMounted(async () => {
@@ -180,23 +165,153 @@ onMounted(async () => {
 
 <style scoped>
 .creation-home {
-  max-width: 1180px;
+  max-width: 880px;
   margin: 0 auto;
-  padding: 32px 20px 48px;
+  padding: 28px 20px 48px;
 }
 
-.card-grid {
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
+.head {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-end;
   gap: 16px;
+  margin-bottom: 20px;
+  flex-wrap: wrap;
 }
 
-.creation-card {
+h2 {
+  margin: 0;
+  font-size: 22px;
+}
+
+.sub {
+  margin: 4px 0 0;
+  color: var(--wp-muted);
+  font-size: 13px;
+}
+
+.list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  border: 1px solid var(--wp-line);
+  border-radius: 10px;
+  background: var(--wp-surface);
+  overflow: hidden;
+}
+
+.list li + li {
+  border-top: 1px solid var(--wp-line);
+}
+
+.row {
+  display: grid;
+  grid-template-columns: 1fr auto 96px 24px;
+  align-items: center;
+  gap: 12px;
+  padding: 12px 16px;
+  color: var(--wp-ink);
+  text-decoration: none;
+}
+
+.row:hover {
+  background: var(--wp-paper);
+}
+
+.row:focus-visible {
+  outline: 2px solid var(--wp-brand);
+  outline-offset: -2px;
+}
+
+.main {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+}
+
+.title {
+  font-weight: 600;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.desc {
+  margin-top: 2px;
+  font-size: 12px;
+  color: var(--wp-muted);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.state {
+  font-size: 12px;
+  color: var(--wp-faint);
+}
+
+.state.done {
+  color: var(--wp-brand);
+}
+
+.time {
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-muted);
+  text-align: right;
+}
+
+.del {
+  color: var(--wp-faint);
+}
+
+.del:hover {
+  color: var(--wp-bad);
+}
+
+.empty {
+  padding: 28px 24px;
+  border: 1px dashed var(--wp-line);
+  border-radius: 10px;
+  background: var(--wp-surface);
+}
+
+.empty p {
+  margin: 0 0 14px;
+  font-size: 14px;
+  color: var(--wp-muted);
+}
+
+.ideas {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
+  gap: 10px;
+}
+
+.idea {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 12px 14px;
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  background: var(--wp-paper);
+  color: var(--wp-ink);
+  font: inherit;
+  text-align: left;
   cursor: pointer;
 }
 
-.creation-desc {
-  font-size: 13px;
+.idea:hover {
+  border-color: var(--wp-brand);
+}
+
+.idea b {
+  font-size: 14px;
+}
+
+.idea span {
+  font-size: 12px;
+  line-height: 1.6;
   color: var(--wp-muted);
 }
 </style>

client/src/pages/Gradebook.vue

@@ -1,95 +1,116 @@
 <template>
-  <n-flex
-    vertical
-    :size="12"
-    style="height: 100%; min-width: 0; box-sizing: border-box; padding: 10px 10px 10px 0; overflow: hidden;"
-  >
-    <n-flex class="toolbar" align="center" justify="space-between" style="flex-shrink: 0;">
-      <n-flex align="center" :size="8" wrap style="min-width: 0;">
-        <n-select
-          v-model:value="query.classname"
-          class="class-select"
-          :options="classOptions"
-          placeholder="班级"
-          :loading="classesLoading"
-        />
-        <n-select
-          v-model:value="query.task_type"
-          class="type-select"
-          :options="taskTypeOptions"
-        />
-        <n-input
-          v-model:value="query.username"
-          class="search-input"
-          clearable
-          placeholder="学生搜索"
-        />
-        <n-switch v-model:value="query.include_all_tasks">
-          <template #checked>全部有提交任务</template>
-          <template #unchecked>只看计入任务</template>
-        </n-switch>
-      </n-flex>
-      <n-flex align="center" :size="8">
-        <n-button
-          secondary
-          title="刷新"
-          :disabled="!query.classname"
-          :loading="loading"
-          @click="loadGradebook"
-        >
-          <template #icon>
-            <Icon icon="lucide:refresh-cw" :width="15" />
-          </template>
-        </n-button>
-        <n-button
-          type="primary"
-          secondary
-          :disabled="!query.classname || !gradebook"
-          :loading="exporting"
-          @click="exportCsv"
-        >
-          <template #icon>
-            <Icon icon="lucide:download" :width="15" />
-          </template>
-          导出 CSV
-        </n-button>
-      </n-flex>
-    </n-flex>
+  <div class="gradebook">
+    <div class="toolbar">
+      <n-select
+        v-model:value="query.classname"
+        class="class-select"
+        :options="classOptions"
+        placeholder="班级"
+        size="small"
+        :loading="classesLoading"
+      />
+      <n-radio-group v-model:value="query.task_type" size="small">
+        <n-radio-button value="">全部</n-radio-button>
+        <n-radio-button value="tutorial">教程</n-radio-button>
+        <n-radio-button value="challenge">挑战</n-radio-button>
+      </n-radio-group>
+      <n-input
+        v-model:value="query.username"
+        class="search-input"
+        size="small"
+        clearable
+        placeholder="搜索学生"
+      >
+        <template #prefix><Icon icon="lucide:search" :width="14" /></template>
+      </n-input>
+      <n-checkbox v-model:checked="query.include_all_tasks" size="small">
+        显示不计入的任务
+      </n-checkbox>
+
+      <span class="spacer"></span>
+
+      <span v-if="gradebook" class="summary">
+        {{ gradebook.student_count }} 人 · 计入 {{ gradebook.included_task_count }} 个任务
+      </span>
+      <n-popover trigger="click" placement="bottom-end" style="max-width: 340px">
+        <template #trigger>
+          <n-button size="small" quaternary>
+            <template #icon><Icon icon="lucide:info" /></template>
+            怎么算的
+          </n-button>
+        </template>
+        <div class="rules">
+          <p>
+            <b>计入的任务</b>：班里至少一半人交过的任务才计入（现在是
+            {{ gradebook?.coverage_threshold_count ?? "—" }} 人），灰色的列不计入。
+          </p>
+          <p><b>每格分数</b>：这个学生在这个任务里分数最高的一次提交，点开可以批改。</p>
+          <p>
+            <b>总分 / 平时等级</b>：计入任务的分数相加后排名，A 30%、B 40%、C 20%、D 5%、E 5%。
+          </p>
+          <p>
+            <b>考核</b>：计入任务里最高三次的平均分另外排名，A 10%、B 20%、C 40%、D 20%、E 10%；
+            分数在等级的分数段内按名次铺开（A 92–99、B 84–91、C 76–83、D 68–75、E 60–67）。
+          </p>
+        </div>
+      </n-popover>
+      <n-tooltip>
+        <template #trigger>
+          <n-button
+            size="small"
+            quaternary
+            :disabled="!query.classname"
+            :loading="loading"
+            @click="loadGradebook"
+          >
+            <template #icon><Icon icon="lucide:refresh-cw" /></template>
+          </n-button>
+        </template>
+        刷新
+      </n-tooltip>
+      <n-button
+        size="small"
+        secondary
+        type="primary"
+        :disabled="!gradebook"
+        :loading="exporting"
+        @click="exportCsv"
+      >
+        <template #icon><Icon icon="lucide:download" /></template>
+        导出 CSV
+      </n-button>
+    </div>
 
     <n-alert v-if="loadError" type="error" closable @close="loadError = ''">
       {{ loadError }}
     </n-alert>
 
-    <n-flex v-if="gradebook" align="center" :size="8" style="flex-shrink: 0;">
-      <n-tag size="small">学生 {{ gradebook.student_count }}</n-tag>
-      <n-tag size="small">任务 {{ gradebook.task_count }}</n-tag>
-      <n-tag size="small" type="success">
-        计入 {{ gradebook.included_task_count }}
-      </n-tag>
-      <n-tag size="small">
-        覆盖门槛 {{ gradebook.coverage_threshold_count }} 人
-      </n-tag>
-    </n-flex>
-
     <n-data-table
+      class="table gradebook-table"
       size="small"
-      striped
       flex-height
+      :single-line="false"
       :loading="loading"
       :columns="columns"
       :data="rows"
       :row-key="(row: GradebookRow) => row.user_id"
       :scroll-x="scrollX"
-      style="flex: 1; min-height: 0;"
     />
-  </n-flex>
+  </div>
+
   <n-drawer
     :show="!!reviewId"
-    :width="400"
+    width="min(1180px, 92vw)"
     placement="right"
     @update:show="(v: boolean) => !v && (reviewId = null)"
   >
-    <ReviewPanel v-if="reviewId" :submission-id="reviewId" @close="reviewId = null" />
+    <ReviewPanel
+      v-if="reviewId"
+      :submission-id="reviewId"
+      wide
+      @close="reviewId = null"
+      @changed="loadGradebook"
+    />
   </n-drawer>
 </template>
 
@@ -98,13 +119,7 @@ import ReviewPanel from "../components/review/ReviewPanel.vue"
 import { computed, h, onMounted, reactive, ref, watch } from "vue"
 import { Icon } from "../icons"
 import { watchDebounced } from "@vueuse/core"
-import {
-  NButton,
-  NTag,
-  NText,
-  useMessage,
-  type DataTableColumn,
-} from "naive-ui"
+import { useMessage, type DataTableColumn } from "naive-ui"
 import { Account, Gradebook } from "../api"
 import { displayGradebookStudentName } from "../utils/gradebook"
 import type {
@@ -113,9 +128,11 @@ import type {
   GradebookQuery,
   GradebookRow,
   GradebookTask,
-  GradebookTaskType,
 } from "../utils/type"
 
+// 和批改页共用“当前班级”（那边的“全部班级”在这里不适用）
+const CLASS_KEY = "review-class"
+
 const message = useMessage()
 const classesLoading = ref(false)
 const loading = ref(false)
@@ -131,28 +148,19 @@ const query = reactive<GradebookQuery>({
   include_all_tasks: false,
 })
 
-const taskTypeOptions: { label: string; value: GradebookTaskType | "" }[] = [
-  { label: "全部", value: "" },
-  { label: "教程", value: "tutorial" },
-  { label: "挑战", value: "challenge" },
-]
-
 const classOptions = computed(() =>
-  classes.value.map((classname) => ({ label: classname, value: classname })),
+  classes.value.map((classname) => ({ label: `${classname} 班`, value: classname })),
 )
 const rows = computed(() => gradebook.value?.rows ?? [])
-const scrollX = computed(() => 1040 + (gradebook.value?.tasks.length ?? 0) * 96)
+
+const TASK_WIDTH = 66
+const scrollX = computed(() => 380 + (gradebook.value?.tasks.length ?? 0) * TASK_WIDTH)
 
 function formatScore(value: number | null) {
-  if (value === null) return "-"
+  if (value === null) return "—"
   return Number.isInteger(value) ? String(value) : value.toFixed(2)
 }
 
-function taskTitle(task: GradebookTask) {
-  const typeLabel = task.task_type === "tutorial" ? "教程" : "挑战"
-  return `${typeLabel}${task.display}`
-}
-
 // 点分数：在右侧打开和批改页一样的详情，能直接打分、看提示词
 const reviewId = ref<string | null>(null)
 function openSubmission(cell: GradebookCell) {
@@ -160,152 +168,135 @@ function openSubmission(cell: GradebookCell) {
   reviewId.value = cell.submission_id
 }
 
-function gradeTagType(grade: string) {
-  if (grade === "A") return "success"
-  if (grade === "B") return "info"
-  if (grade === "C") return "default"
-  return "warning"
+function renderGrade(grade: string, extra?: string | number) {
+  return h("span", { class: ["grade", `g-${grade}`] }, [
+    grade,
+    extra === undefined ? null : h("small", String(extra)),
+  ])
 }
 
 function renderTaskHeader(task: GradebookTask) {
-  return h("div", { class: ["task-header", { muted: !task.included }] }, [
-    h("div", { class: "task-title", title: task.title }, taskTitle(task)),
-    h("div", { class: "task-meta" }, [
-      h("span", `${Math.round(task.coverage * 100)}%`),
-      task.included
-        ? null
-        : h(NTag, { size: "tiny", round: false }, { default: () => "未计入" }),
-    ]),
-  ])
+  const pct = Math.round(task.coverage * 100)
+  const studentCount = gradebook.value?.student_count ?? 0
+  return h(
+    "div",
+    {
+      class: ["task-head", { excluded: !task.included }],
+      title: `${task.display}. ${task.title}\n交了 ${task.submitted_count} / ${studentCount} 人（${pct}%）${task.included ? "" : "，不计入"}`,
+    },
+    [
+      h("div", { class: "task-name" }, task.title),
+      h("div", { class: "task-cov" }, [
+        h("span", { class: "cov-bar" }, [h("span", { style: { width: pct + "%" } })]),
+      ]),
+    ],
+  )
 }
 
 function renderScore(row: GradebookRow, task: GradebookTask) {
   const cell = row.scores[task.id]
-  if (!cell || !cell.submitted) {
-    return h(
-      NText,
-      { class: "missing-cell", type: "error" },
-      { default: () => "缺交" },
-    )
-  }
+  if (!cell?.submitted)
+    return h("span", { class: ["cell", "missing", { excluded: !task.included }] }, "缺")
   return h(
-    NButton,
+    "button",
     {
-      text: true,
-      type: task.included ? "primary" : "default",
-      class: ["score-link", { muted: !task.included }],
-      onClick: (event: MouseEvent) => {
-        event.stopPropagation()
-        openSubmission(cell)
-      },
+      class: ["cell", "score", { unrated: cell.score === 0, excluded: !task.included }],
+      title: cell.score === 0 ? "交了，还没人评分" : `${formatScore(cell.score)}，点开批改`,
+      onClick: () => openSubmission(cell),
     },
-    { default: () => formatScore(cell.score) },
+    cell.score === 0 ? "未评" : cell.score.toFixed(1),
   )
 }
 
-function renderMissingCount(value: number) {
-  if (value <= 0) return "0"
-  return h(NText, { type: "error" }, { default: () => String(value) })
+function taskColumn(task: GradebookTask): DataTableColumn<GradebookRow> {
+  return {
+    title: () => renderTaskHeader(task),
+    key: `task-${task.id}`,
+    width: TASK_WIDTH,
+    align: "center",
+    className: task.included ? "" : "excluded-col",
+    render: (row) => renderScore(row, task),
+  }
 }
 
 const columns = computed<DataTableColumn<GradebookRow>[]>(() => {
   const tasks = gradebook.value?.tasks ?? []
+  const groups = (["tutorial", "challenge"] as const)
+    .map((type) => ({ type, items: tasks.filter((t) => t.task_type === type) }))
+    .filter((g) => g.items.length)
   return [
     {
-      title: "排名",
+      title: "#",
       key: "rank",
-      width: 60,
+      width: 40,
       fixed: "left",
-    },
-    {
-      title: "平时等级",
-      key: "grade",
-      width: 80,
-      fixed: "left",
-      render: (row) =>
-        h(
-          NTag,
-          { size: "small", type: gradeTagType(row.grade) },
-          { default: () => row.grade },
-        ),
-    },
-    {
-      title: "考核等级",
-      key: "assessment_grade",
-      width: 80,
-      fixed: "left",
-      render: (row) =>
-        h(
-          NTag,
-          { size: "small", type: gradeTagType(row.assessment_grade) },
-          { default: () => row.assessment_grade },
-        ),
-    },
-    {
-      title: "考核分数",
-      key: "assessment_score",
-      width: 80,
-      fixed: "left",
-      render: (row) => row.assessment_score,
+      align: "right",
+      sorter: (a, b) => a.rank - b.rank,
+      render: (row) => h("span", { class: "rank" }, row.rank),
     },
     {
       title: "学生",
       key: "username",
-      width: 80,
+      width: 92,
       fixed: "left",
-      render: (row) => {
-        const studentName = displayGradebookStudentName(row)
-        return h(NText, { title: studentName }, { default: () => studentName })
-      },
+      ellipsis: { tooltip: true },
+      render: (row) => displayGradebookStudentName(row),
     },
-    ...tasks.map((task) => ({
-      title: () => renderTaskHeader(task),
-      key: `task-${task.id}`,
-      width: 96,
+    {
+      title: "平时",
+      key: "grade",
+      width: 52,
+      fixed: "left",
+      align: "center",
+      render: (row) => renderGrade(row.grade),
+    },
+    {
+      title: "考核",
+      key: "assessment_score",
+      width: 72,
+      fixed: "left",
+      sorter: (a, b) => a.assessment_score - b.assessment_score,
+      render: (row) => renderGrade(row.assessment_grade, row.assessment_score),
+    },
+    ...groups.map((g) => ({
+      title: g.type === "tutorial" ? "教程" : "挑战",
+      key: `group-${g.type}`,
       align: "center" as const,
-      className: task.included ? "" : "excluded-task-column",
-      render: (row: GradebookRow) => renderScore(row, task),
+      children: g.items.map(taskColumn),
     })),
-    {
-      title: "教程合计",
-      key: "tutorial_total",
-      width: 92,
-      fixed: "right",
-      render: (row) => formatScore(row.tutorial_total),
-    },
-    {
-      title: "挑战合计",
-      key: "challenge_total",
-      width: 92,
-      fixed: "right",
-      render: (row) => formatScore(row.challenge_total),
-    },
     {
       title: "总分",
       key: "total_score",
-      width: 82,
+      width: 72,
       fixed: "right",
-      render: (row) => formatScore(row.total_score),
-    },
-    {
-      title: "平均",
-      key: "average_score",
-      width: 82,
-      fixed: "right",
-      render: (row) => formatScore(row.average_score),
+      align: "right",
+      sorter: (a, b) => a.total_score - b.total_score,
+      render: (row) =>
+        h(
+          "span",
+          {
+            class: "total",
+            title: `教程合计 ${formatScore(row.tutorial_total)}\n挑战合计 ${formatScore(row.challenge_total)}\n平均 ${formatScore(row.average_score)}`,
+          },
+          formatScore(row.total_score),
+        ),
     },
     {
       title: "已交",
       key: "submitted_task_count",
-      width: 70,
+      width: 64,
       fixed: "right",
-    },
-    {
-      title: "缺交",
-      key: "missing_task_count",
-      width: 70,
-      fixed: "right",
-      render: (row) => renderMissingCount(row.missing_task_count),
+      align: "right",
+      sorter: (a, b) => a.missing_task_count - b.missing_task_count,
+      render: (row) =>
+        h(
+          "span",
+          {
+            class: ["done", { short: row.missing_task_count > 0 }],
+            title: row.missing_task_count ? `缺交 ${row.missing_task_count} 个` : "都交了",
+          },
+          `${row.submitted_task_count}/${row.submitted_task_count + row.missing_task_count}`,
+        ),
     },
   ]
 })
@@ -315,7 +306,11 @@ async function loadClasses() {
   try {
     classes.value = await Account.listClasses()
     if (!query.classname && classes.value.length > 0) {
-      query.classname = classes.value[0]
+      let saved: string | null = null
+      try {
+        saved = localStorage.getItem(CLASS_KEY)
+      } catch {}
+      query.classname = saved && classes.value.includes(saved) ? saved : classes.value[0]!
     }
   } finally {
     classesLoading.value = false
@@ -359,6 +354,16 @@ async function exportCsv() {
   }
 }
 
+watch(
+  () => query.classname,
+  (c) => {
+    if (!c) return
+    try {
+      localStorage.setItem(CLASS_KEY, c)
+    } catch {}
+  },
+)
+
 watch(
   () => [query.classname, query.task_type, query.include_all_tasks],
   () => loadGradebook(),
@@ -379,67 +384,194 @@ onMounted(async () => {
 </script>
 
 <style scoped>
-.class-select {
-  width: 150px;
+.gradebook {
+  height: 100%;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 10px 12px;
+  box-sizing: border-box;
+  overflow: hidden;
 }
 
-.type-select {
-  width: 112px;
+.toolbar {
+  flex: none;
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 10px;
+}
+
+.class-select {
+  width: 120px;
 }
 
 .search-input {
-  width: 160px;
+  width: 150px;
 }
 
-.task-header {
-  min-width: 0;
-  line-height: 1.2;
+.spacer {
+  flex: 1;
 }
 
-.task-header.muted {
-  color: var(--wp-muted);
-}
-
-.task-title {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-  font-weight: 600;
-}
-
-.task-meta {
-  display: flex;
-  min-height: 18px;
-  align-items: center;
-  justify-content: center;
-  gap: 4px;
-  margin-top: 2px;
-  color: var(--wp-faint);
-  font-size: 11px;
-}
-
-.missing-cell {
-  color: var(--wp-bad);
+.summary {
   font-size: 12px;
-}
-
-.score-link.muted {
   color: var(--wp-muted);
 }
 
-:deep(.excluded-task-column) {
+.rules {
+  font-size: 13px;
+  line-height: 1.6;
+}
+
+.rules p {
+  margin: 0 0 6px;
+}
+
+.rules p:last-child {
+  margin: 0;
+}
+
+.table {
+  flex: 1;
+  min-height: 0;
+}
+
+.table :deep(.n-data-table-td) {
+  padding: 4px 8px;
+}
+
+.table :deep(.n-data-table-th) {
+  padding: 6px 8px;
+}
+</style>
+
+<style>
+/* 单元格是 render 函数画的，拿不到 scoped 属性，用表格的类名限定 */
+.gradebook-table .excluded-col {
   background: var(--wp-paper);
 }
 
-@media (max-width: 720px) {
-  .toolbar {
-    align-items: flex-start;
-  }
+.gradebook-table .rank {
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-faint);
+}
 
-  .class-select,
-  .type-select,
-  .search-input {
-    width: 100%;
-  }
+.gradebook-table .grade {
+  font-weight: 700;
+}
+
+.gradebook-table .grade small {
+  margin-left: 6px;
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-muted);
+}
+
+.gradebook-table .g-A {
+  color: var(--wp-brand);
+}
+
+.gradebook-table .g-B {
+  color: var(--wp-css);
+}
+
+.gradebook-table .g-C {
+  color: var(--wp-muted);
+}
+
+.gradebook-table .g-D {
+  color: var(--wp-warn);
+}
+
+.gradebook-table .g-E {
+  color: var(--wp-bad);
+}
+
+.gradebook-table .task-head {
+  line-height: 1.3;
+  font-weight: 400;
+}
+
+.gradebook-table .task-name {
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+  font-size: 12px;
+  color: var(--wp-ink);
+  word-break: break-all;
+}
+
+.gradebook-table .task-head.excluded .task-name {
+  color: var(--wp-faint);
+}
+
+.gradebook-table .task-cov {
+  margin-top: 4px;
+}
+
+.gradebook-table .cov-bar {
+  display: block;
+  height: 3px;
+  border-radius: 2px;
+  background: var(--wp-line);
+  overflow: hidden;
+}
+
+.gradebook-table .cov-bar span {
+  display: block;
+  height: 100%;
+  background: var(--wp-brand);
+}
+
+.gradebook-table .task-head.excluded .cov-bar span {
+  background: var(--wp-faint);
+}
+
+.gradebook-table .cell {
+  font: 13px var(--wp-font-mono);
+}
+
+.gradebook-table .cell.missing {
+  font: 12px var(--wp-font-sans);
+  color: var(--wp-bad);
+}
+
+.gradebook-table .score {
+  padding: 2px 6px;
+  border: 0;
+  border-radius: 4px;
+  background: transparent;
+  color: var(--wp-ink);
+  cursor: pointer;
+}
+
+.gradebook-table .score:hover {
+  background: var(--wp-brand-soft);
+}
+
+.gradebook-table .score.unrated {
+  font: 12px var(--wp-font-sans);
+  color: var(--wp-faint);
+}
+
+.gradebook-table .missing.excluded,
+.gradebook-table .score.excluded {
+  color: var(--wp-faint);
+}
+
+.gradebook-table .total {
+  font: 600 13px var(--wp-font-mono);
+  cursor: default;
+}
+
+.gradebook-table .done {
+  font: 13px var(--wp-font-mono);
+  color: var(--wp-muted);
+}
+
+.gradebook-table .done.short {
+  color: var(--wp-bad);
 }
 </style>

client/src/pages/MySubmissions.vue

@@ -0,0 +1,442 @@
+<template>
+  <div class="mine">
+    <aside class="tasks">
+      <div class="tasks-head">
+        <b>我的提交</b>
+        <span class="muted">{{ tasks.length }} 个任务</span>
+      </div>
+      <n-spin :show="loadingList" class="task-list">
+        <template v-for="g in groups" :key="g.label">
+          <div class="group-label">{{ g.label }}</div>
+          <button
+            v-for="t in g.items"
+            :key="t.task_id"
+            :class="['task', { on: t.task_id === taskId }]"
+            @click="taskId = t.task_id"
+          >
+            <span class="task-title">{{ t.task_display }}. {{ t.task_title }}</span>
+            <span class="task-meta">
+              {{ t.submit_count }} 次 · {{ parseTime(t.created, "MM-DD") }}
+            </span>
+          </button>
+        </template>
+        <n-empty
+          v-if="!loadingList && !tasks.length"
+          description="还没有交过作品"
+          style="margin-top: 60px"
+        />
+      </n-spin>
+    </aside>
+
+    <main class="detail">
+      <template v-if="task">
+        <div class="detail-head">
+          <div class="title">
+            <span class="kind">{{ task.task_type === TASK_TYPE.Tutorial ? "教程" : "挑战" }}</span>
+            <b>{{ task.task_display }}. {{ task.task_title }}</b>
+          </div>
+          <n-button size="small" quaternary icon-placement="right" @click="openTask">
+            打开这道题
+            <template #icon><Icon icon="lucide:arrow-right" /></template>
+          </n-button>
+        </div>
+
+        <n-spin :show="loadingVersions" class="stage">
+          <div v-if="versions.length" class="versions">
+            <button
+              v-for="(v, i) in versions"
+              :key="v.id"
+              :class="['ver', { on: v.id === currentId }]"
+              @click="currentId = v.id"
+            >
+              第 {{ versions.length - i }} 次
+              <span class="ver-score">{{ v.score ? v.score.toFixed(1) : "未评" }}</span>
+              <span v-if="v.id === bestId && versions.length > 1" class="best">计入成绩</span>
+            </button>
+          </div>
+          <div class="frame">
+            <iframe
+              v-if="current"
+              :key="current.id"
+              :sandbox="PREVIEW_SANDBOX"
+              :srcdoc="doc"
+            ></iframe>
+          </div>
+          <div v-if="current" class="meta">
+            <span class="muted">
+              {{ parseTime(current.created, "YYYY-MM-DD HH:mm") }} 提交 ·
+              {{ current.score ? `得分 ${current.score.toFixed(2)}` : "还没有人评分" }}
+              <template v-if="versions.length > 1"> · 成绩按分数最高的一次算</template>
+            </span>
+            <n-flex :size="4" :wrap="false">
+              <n-button
+                v-if="task.task_type === TASK_TYPE.Challenge"
+                size="small"
+                quaternary
+                @click="showChain = true"
+              >
+                提示词
+              </n-button>
+              <n-popconfirm @positive-click="copyToEditor">
+                <template #trigger>
+                  <n-button size="small" quaternary>放回编辑器</n-button>
+                </template>
+                把这一版的代码放进这道题的编辑器，会替换编辑器里现在的代码。
+              </n-popconfirm>
+              <n-popconfirm @positive-click="remove">
+                <template #trigger>
+                  <n-button size="small" quaternary type="error">删除这一版</n-button>
+                </template>
+                删除后找不回来；它对应的那轮 AI 对话也会一起删掉。<br />
+                已经有人评过分的不能删。
+              </n-popconfirm>
+            </n-flex>
+          </div>
+        </n-spin>
+      </template>
+      <n-empty v-else-if="tasks.length" description="选一个任务" style="margin-top: 120px" />
+    </main>
+  </div>
+
+  <ChainModal
+    v-if="current"
+    v-model:show="showChain"
+    :submission-id="current.id"
+    :title="`${current.task_display}. ${current.task_title}`"
+    :asset-base-url="`/media/tasks/${current.task_type}/${current.task_display}/`"
+  />
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from "vue"
+import { useRoute, useRouter } from "vue-router"
+import { useMessage } from "naive-ui"
+import { Icon } from "../icons"
+import { Submission } from "../api"
+import ChainModal from "../components/submissions/ChainModal.vue"
+import { saveTaskCode } from "../composables/useTaskCode"
+import { TASK_TYPE } from "../utils/const"
+import { goHome, parseTime } from "../utils/helper"
+import { buildPreviewDocument, PREVIEW_SANDBOX } from "../utils/previewDocument"
+import type { SubmissionOut } from "../utils/type"
+
+// 学生看自己交过的作品：左边按任务列出，右边看每一次交的版本
+type Version = SubmissionOut & { html: string | null; css: string | null; js: string | null }
+
+const route = useRoute()
+const router = useRouter()
+const message = useMessage()
+
+const tasks = ref<SubmissionOut[]>([])
+const loadingList = ref(false)
+const taskId = ref<number | null>(route.query.task ? Number(route.query.task) : null)
+const versions = ref<Version[]>([])
+const loadingVersions = ref(false)
+const currentId = ref<string | null>(null)
+const showChain = ref(false)
+
+const task = computed(() => tasks.value.find((t) => t.task_id === taskId.value) ?? null)
+const current = computed(() => versions.value.find((v) => v.id === currentId.value) ?? null)
+
+const groups = computed(() =>
+  [
+    { label: "教程", type: TASK_TYPE.Tutorial },
+    { label: "挑战", type: TASK_TYPE.Challenge },
+  ]
+    .map((g) => ({
+      label: g.label,
+      items: tasks.value
+        .filter((t) => t.task_type === g.type)
+        .sort((a, b) => a.task_display - b.task_display),
+    }))
+    .filter((g) => g.items.length),
+)
+
+// 和成绩册一样：分数最高的一次计入成绩，同分取最新
+const bestId = computed(() => {
+  let best: Version | null = null
+  for (const v of versions.value) if (v.score > 0 && (!best || v.score > best.score)) best = v
+  return best?.id ?? null
+})
+
+const doc = computed(() =>
+  current.value
+    ? buildPreviewDocument({
+        html: current.value.html ?? "",
+        css: current.value.css ?? "",
+        js: current.value.js ?? "",
+        assetBaseUrl: `/media/tasks/${current.value.task_type}/${current.value.task_display}/`,
+      })
+    : "",
+)
+
+async function loadTasks() {
+  loadingList.value = true
+  try {
+    const all: SubmissionOut[] = []
+    for (let page = 1; ; page++) {
+      const res = await Submission.list({ page, page_size: 100, grouped: true })
+      all.push(...res.items)
+      if (all.length >= res.count || !res.items.length) break
+    }
+    tasks.value = all
+    if (!task.value) taskId.value = groups.value[0]?.items[0]?.task_id ?? null
+  } finally {
+    loadingList.value = false
+  }
+}
+
+let seq = 0
+async function loadVersions() {
+  const s = ++seq
+  const t = task.value
+  if (!t) {
+    versions.value = []
+    return
+  }
+  loadingVersions.value = true
+  try {
+    const list = (await Submission.listByUserTask(t.userid, t.task_id)) as Version[]
+    if (s !== seq) return
+    versions.value = list
+    if (!list.some((v) => v.id === currentId.value)) currentId.value = list[0]?.id ?? null
+  } finally {
+    if (s === seq) loadingVersions.value = false
+  }
+}
+
+watch(taskId, (id) => {
+  router.replace({ query: id ? { task: String(id) } : {} })
+  loadVersions()
+})
+
+function openTask() {
+  if (task.value) goHome(router, task.value.task_type, task.value.task_display)
+}
+
+function copyToEditor() {
+  const v = current.value
+  if (!v) return
+  // 教程和挑战的代码都按任务各存一份，打开那个任务时读到
+  saveTaskCode(v.task_id, { html: v.html ?? "", css: v.css ?? "", js: v.js ?? "" })
+  goHome(router, v.task_type, v.task_display)
+}
+
+async function remove() {
+  const v = current.value
+  if (!v) return
+  try {
+    await Submission.delete(v.id)
+  } catch (err: any) {
+    message.error(err.response?.data?.detail ?? "删除失败，请重试")
+    return
+  }
+  message.success("已删除")
+  if (versions.value.length > 1) {
+    await loadVersions()
+    const t = tasks.value.find((x) => x.task_id === v.task_id)
+    if (t) t.submit_count = versions.value.length
+  } else {
+    // 这道题一次都不剩了
+    tasks.value = tasks.value.filter((x) => x.task_id !== v.task_id)
+    taskId.value = groups.value[0]?.items[0]?.task_id ?? null
+  }
+}
+
+onMounted(async () => {
+  await loadTasks()
+  loadVersions()
+})
+</script>
+
+<style scoped>
+.mine {
+  height: 100%;
+  display: flex;
+  min-width: 0;
+}
+
+.tasks {
+  width: 260px;
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  border-right: 1px solid var(--wp-line);
+  background: var(--wp-surface);
+  min-height: 0;
+}
+
+.tasks-head {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  padding: 12px 14px 6px;
+}
+
+.task-list {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  padding: 0 8px 10px;
+}
+
+.group-label {
+  padding: 10px 6px 4px;
+  font-size: 12px;
+  color: var(--wp-faint);
+}
+
+.task {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  padding: 6px 8px;
+  border: 0;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--wp-ink);
+  font: inherit;
+  font-size: 13px;
+  text-align: left;
+  cursor: pointer;
+}
+
+.task:hover {
+  background: var(--wp-paper);
+}
+
+.task.on {
+  background: var(--wp-brand-soft);
+  color: var(--wp-brand);
+}
+
+.task-title {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.task-meta {
+  font-size: 12px;
+  color: var(--wp-faint);
+}
+
+.muted {
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
+.detail {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  padding: 10px 14px 12px;
+  gap: 10px;
+}
+
+.detail-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+}
+
+.title {
+  min-width: 0;
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.kind {
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
+.stage {
+  flex: 1;
+  min-height: 0;
+}
+
+.stage :deep(.n-spin-content) {
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.versions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.ver {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  padding: 3px 10px;
+  border: 1px solid var(--wp-line);
+  border-radius: 6px;
+  background: var(--wp-surface);
+  color: var(--wp-ink);
+  font: inherit;
+  font-size: 13px;
+  cursor: pointer;
+}
+
+.ver:hover {
+  border-color: var(--wp-brand);
+}
+
+.ver.on {
+  border-color: var(--wp-brand);
+  background: var(--wp-brand-soft);
+  color: var(--wp-brand);
+}
+
+.ver-score {
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-muted);
+}
+
+.best {
+  padding: 0 5px;
+  border-radius: 3px;
+  font-size: 11px;
+  line-height: 18px;
+  color: var(--wp-brand);
+  background: var(--wp-brand-soft);
+}
+
+.ver.on .best {
+  background: var(--wp-surface);
+}
+
+.frame {
+  flex: 1;
+  min-height: 0;
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.frame iframe {
+  width: 100%;
+  height: 100%;
+  border: 0;
+  display: block;
+}
+
+.meta {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+}
+</style>

client/src/pages/Review.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="review">
-    <aside class="tasks">
+    <aside v-show="!fullDetail" class="tasks">
       <n-select
         v-model:value="classname"
         :options="classOptions"
@@ -25,7 +25,7 @@
       <n-empty v-else description="先选一个班级" size="small" style="margin-top: 40px" />
     </aside>
 
-    <main class="wall">
+    <main v-show="!fullDetail" class="wall">
       <template v-if="task && classname">
         <div class="wall-head">
           <div class="wall-title">
@@ -48,6 +48,10 @@
             >
               开始讲评（{{ presentList.length }}）
             </n-button>
+            <n-button size="small" @click="showStats = true">
+              <template #icon><Icon icon="lucide:bar-chart-2" /></template>
+              课堂总结
+            </n-button>
             <n-tooltip>
               <template #trigger>
                 <n-button size="small" quaternary @click="loadWall">
@@ -59,17 +63,24 @@
           </n-flex>
         </div>
         <n-spin :show="loadingWall" class="grid-wrap">
-          <div class="grid">
+          <template v-for="g in groups" :key="g.name">
+          <div v-if="g.name" class="group-head">
+            <b>{{ g.name }} 班</b>
+            <span>已交 {{ g.submitted }} / {{ g.total }}</span>
+            <span v-if="g.collapsed">· 这个班还没有人交，已收起</span>
+          </div>
+          <div v-if="!g.collapsed" class="grid">
             <button
-              v-for="s in visible"
+              v-for="s in g.items"
               :key="s.user_id"
               :class="['card', { sel: s.submission?.id === selectedId, missing: !s.submission }]"
               :disabled="!s.submission"
-              @click="s.submission && (selectedId = s.submission.id)"
+              @click="s.submission && openDetail(s.submission.id)"
             >
               <div class="thumb">
                 <iframe
                   v-if="s.submission"
+                  :key="s.submission.id"
                   :sandbox="PREVIEW_SANDBOX"
                   :srcdoc="docOf(s)"
                   loading="lazy"
@@ -86,6 +97,7 @@
               <span v-if="s.submission?.flag === 'present'" class="present">讲评</span>
             </button>
           </div>
+          </template>
           <n-empty
             v-if="!loadingWall && !visible.length"
             description="没有符合条件的学生"
@@ -96,18 +108,31 @@
       <n-empty v-else description="选一个班级和任务开始批改" style="margin-top: 120px" />
     </main>
 
-    <aside v-if="selectedId" class="detail">
+    <aside v-if="selectedId" :class="['detail', { full: fullDetail }]">
       <ReviewPanel
         :submission-id="selectedId"
+        :wide="fullDetail"
+        can-widen
+        @toggle-wide="bigPreview = !bigPreview"
         :nav="{ prev: neighbor(-1) !== null, next: neighbor(1) !== null }"
         @prev="move(-1)"
         @next="move(1)"
-        @close="selectedId = null"
+        @close="closeDetail"
         @changed="applyPatch"
       />
     </aside>
   </div>
 
+  <TaskStatsModal
+    v-if="task"
+    v-model:show="showStats"
+    :task-id="task.id"
+    :title="`${task.display}. ${task.title}`"
+    :initial-class="classname"
+    in-review
+    @open="openFromStats"
+  />
+
   <div v-if="presenting" class="present-mode">
     <div class="present-head">
       <b>{{ presentList[presentIndex]?.username }}</b>
@@ -117,15 +142,18 @@
     <iframe
       v-if="presentList[presentIndex]"
       :sandbox="PREVIEW_SANDBOX"
+      :key="presentIndex"
       :srcdoc="docOf(presentList[presentIndex]!)"
     ></iframe>
   </div>
 </template>
 <script lang="ts" setup>
-import { computed, onMounted, onUnmounted, ref, watch } from "vue"
+import { computed, nextTick, onMounted, onUnmounted, ref, watch } from "vue"
 import { useRoute, useRouter } from "vue-router"
+import { useStorage } from "@vueuse/core"
 import { Icon } from "../icons"
 import ReviewPanel from "../components/review/ReviewPanel.vue"
+import TaskStatsModal from "../components/task/TaskStatsModal.vue"
 import { Review } from "../api"
 import { buildPreviewDocument, PREVIEW_SANDBOX } from "../utils/previewDocument"
 import type { FlagType, ReviewOptions, ReviewProgress, ReviewStudent } from "../utils/type"
@@ -141,11 +169,58 @@ const loadingWall = ref(false)
 const classname = ref<string | null>((route.query.class as string) || null)
 const taskId = ref<number | null>(route.query.task ? Number(route.query.task) : null)
 const filter = ref<"all" | "unrated" | "missing" | "present">("all")
-const selectedId = ref<string | null>(null)
+// 打开的作品放在地址栏（?sub=），浏览器“后退”就能回到作品墙
+const selectedId = ref<string | null>((route.query.sub as string) || null)
+watch(
+  () => route.query.sub,
+  (v) => {
+    selectedId.value = (v as string) || null
+  },
+)
+// 是不是从作品墙点开的（点开时记了一步历史，关闭时退回那一步）
+let pushedDetail = false
+
+function openDetail(id: string) {
+  pushedDetail = true
+  router.push({ query: { ...route.query, sub: id } })
+}
+
+// 课堂总结里点了高分作品：在这里打开；那个学生不在当前班就先切过去
+const showStats = ref(false)
+async function openFromStats(id: string, cls: string) {
+  showStats.value = false
+  if (classname.value !== ALL && classname.value !== cls) {
+    classname.value = cls
+    // 先让地址栏变成新班级（切班的 watch 也会这么改），关掉作品时“后退”才回到这个班
+    await nextTick()
+    await router.replace({ query: { class: cls, task: taskId.value ?? undefined } })
+  }
+  pushedDetail = true
+  router.push({ query: { class: classname.value ?? undefined, task: taskId.value ?? undefined, sub: id } })
+}
+
+function closeDetail() {
+  if (pushedDetail) {
+    pushedDetail = false
+    router.back()
+  } else {
+    const { sub: _, ...rest } = route.query
+    router.replace({ query: rest })
+  }
+}
 const presenting = ref(false)
+// 点开作品默认用大图（预览占满中间），老师也可以切回旁边的小面板；记住选择
+const bigPreview = useStorage("review-big-preview", true)
+const fullDetail = computed(() => !!selectedId.value && bigPreview.value)
 const presentIndex = ref(0)
 
-const classOptions = computed(() => options.value.classes.map((c) => ({ label: `${c} 班`, value: c })))
+// 全部班级：一道题全校的作品放在一面墙上，按班级分组
+const ALL = "__all__"
+const classOptions = computed(() => [
+  { label: "全部班级", value: ALL },
+  ...options.value.classes.map((c) => ({ label: `${c} 班`, value: c })),
+])
+const classParam = () => (classname.value === ALL ? undefined : classname.value ?? undefined)
 const task = computed(() => options.value.tasks.find((t) => t.id === taskId.value))
 const taskGroups = computed(() => [
   { label: "教程", items: options.value.tasks.filter((t) => t.task_type === "tutorial") },
@@ -171,6 +246,22 @@ const visible = computed(() =>
     return true
   }),
 )
+const groups = computed(() => {
+  if (classname.value !== ALL) {
+    return [{ name: "", items: visible.value, submitted: 0, total: 0, collapsed: false }]
+  }
+  const map = new Map<string, ReviewStudent[]>()
+  for (const s of visible.value) {
+    if (!map.has(s.classname)) map.set(s.classname, [])
+    map.get(s.classname)!.push(s)
+  }
+  return [...map].map(([name, items]) => {
+    const all = students.value.filter((s) => s.classname === name)
+    const submitted = all.filter((s) => s.submission).length
+    // 全校一起看时，没人交的班（这道题没布置给它）只留一行标题，不然一屏都是“未交”
+    return { name, items, submitted, total: all.length, collapsed: !submitted && filter.value !== "missing" }
+  })
+})
 const presentList = computed(() => students.value.filter((s) => s.submission?.flag === "present"))
 
 const docs = new Map<string, string>()
@@ -197,7 +288,7 @@ async function loadWall() {
   const s = ++wallSeq
   loadingWall.value = true
   try {
-    const data = await Review.classWall(classname.value, taskId.value)
+    const data = await Review.classWall(classParam(), taskId.value)
     if (s === wallSeq) students.value = data
   } finally {
     if (s === wallSeq) loadingWall.value = false
@@ -206,7 +297,7 @@ async function loadWall() {
 
 async function loadProgress() {
   progress.value = null
-  if (classname.value) progress.value = await Review.progress(classname.value)
+  if (classname.value) progress.value = await Review.progress(classParam())
 }
 
 watch(classname, (c) => {
@@ -215,7 +306,7 @@ watch(classname, (c) => {
 })
 watch([classname, taskId], () => {
   router.replace({ query: { class: classname.value ?? undefined, task: taskId.value ?? undefined } })
-  selectedId.value = null
+  pushedDetail = false
   filter.value = "all"
   students.value = []
   loadWall()
@@ -227,9 +318,10 @@ function neighbor(step: number): string | null {
   const i = list.findIndex((s) => s.submission!.id === selectedId.value)
   return list[i + step]?.submission?.id ?? null
 }
+// 切换学生不新增历史，免得要连按很多次后退
 function move(step: number) {
   const id = neighbor(step)
-  if (id) selectedId.value = id
+  if (id) router.replace({ query: { ...route.query, sub: id } })
 }
 
 function applyPatch(p: { id: string; my_score?: number; score?: number; flag?: FlagType }) {
@@ -254,8 +346,10 @@ function onKey(e: KeyboardEvent) {
   }
   const t = e.target as HTMLElement
   if (t.closest("input, textarea, [contenteditable]") || e.ctrlKey || e.metaKey || e.altKey) return
-  if (e.key === "j" || e.key === "J") move(1)
-  else if (e.key === "k" || e.key === "K") move(-1)
+  if (e.key === "Escape" && selectedId.value) closeDetail()
+  // 按键盘上的位置：J 在左边是上一个，K 在右边是下一个（和面板上的左右箭头一致）
+  else if (e.key === "j" || e.key === "J") move(-1)
+  else if (e.key === "k" || e.key === "K") move(1)
 }
 
 onMounted(async () => {
@@ -263,7 +357,8 @@ onMounted(async () => {
   options.value = await Review.options()
   if (!classname.value) {
     const saved = localStorage.getItem("review-class")
-    classname.value = saved && options.value.classes.includes(saved) ? saved : null
+    classname.value =
+      saved && (saved === ALL || options.value.classes.includes(saved)) ? saved : null
   } else {
     loadProgress()
     loadWall()
@@ -401,6 +496,18 @@ onUnmounted(() => window.removeEventListener("keydown", onKey))
   overflow-y: auto;
 }
 
+.group-head {
+  display: flex;
+  align-items: baseline;
+  gap: 10px;
+  padding: 14px 14px 0;
+}
+
+.group-head span {
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
 .grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
@@ -522,6 +629,12 @@ onUnmounted(() => window.removeEventListener("keydown", onKey))
   min-height: 0;
 }
 
+.detail.full {
+  flex: 1;
+  width: auto;
+  border-left: 0;
+}
+
 .present-mode {
   position: fixed;
   inset: 0;

client/src/pages/Showcase.vue

@@ -1,167 +1,455 @@
 <template>
   <main class="showcase">
-    <n-flex justify="space-between" align="flex-end" style="margin-bottom: 32px;">
+    <header class="page-head">
       <div>
-        <n-h2 style="margin: 0 0 4px;">创意工坊</n-h2>
-        <n-text depth="3">优秀作品展示</n-text>
+        <h2>作品展</h2>
+        <p class="muted">老师从大家交的作品里挑出来的，点开能看大图和它是怎么问出来的</p>
       </div>
-    </n-flex>
+      <nav v-if="awards.length > 1" class="jump">
+        <a v-for="a in awards" :key="a.id" :href="`#award-${a.id}`" @click.prevent="jump(a.id)">
+          {{ a.name }}
+        </a>
+      </nav>
+    </header>
 
     <n-spin :show="loading">
       <n-empty
-        v-if="!loading && awards.length === 0"
-        description="暂无展示作品"
-        style="margin-top: 72px;"
+        v-if="!loading && !awards.length"
+        description="还没有展出的作品"
+        style="margin-top: 72px"
       />
 
-      <section
-        v-for="section in awards"
-        :key="section.id"
-        style="margin-bottom: 48px;"
-      >
-        <n-flex vertical :size="4" style="margin-bottom: 16px;">
-          <n-h3 style="margin: 0;">{{ section.name }}</n-h3>
-          <n-text v-if="section.description" depth="3" style="font-size: 13px;">
-            {{ section.description }}
-          </n-text>
-        </n-flex>
+      <section v-for="(section, si) in awards" :id="`award-${section.id}`" :key="section.id">
+        <div class="section-head">
+          <h3>{{ section.name }}</h3>
+          <span class="muted">{{ section.items.length }} 件</span>
+        </div>
+        <p v-if="section.description" class="desc">{{ section.description }}</p>
 
-        <div class="card-grid">
-          <n-card
-            v-for="item in section.items"
+        <div class="grid">
+          <button
+            v-for="(item, ii) in section.items"
             :key="item.submission_id"
-            class="work-card"
-            content-style="padding: 0;"
-            hoverable
-            @click="openDetail(item)"
+            class="card"
+            @click="open(si, ii)"
           >
-            <div class="card-preview">
+            <div class="thumb">
               <iframe
-                :srcdoc="buildSrcdoc(item)"
-                sandbox="allow-scripts"
+                :srcdoc="docOf(item)"
+                :sandbox="PREVIEW_SANDBOX"
                 loading="lazy"
                 scrolling="no"
-                class="preview-iframe"
-              />
-              <div class="preview-overlay" />
+                tabindex="-1"
+              ></iframe>
             </div>
-            <div class="card-info">
-              <n-flex justify="space-between" align="center" :wrap="false">
-                <n-ellipsis style="font-size: 13px; font-weight: 600; min-width: 0; flex: 1;">
-                  {{ item.username }}
-                </n-ellipsis>
-                <n-flex align="center" :wrap="false" :size="8" style="flex-shrink: 0;">
-                  <n-flex align="center" :size="3">
-                    <Icon icon="lucide:star" :width="13" />
-                    <n-text style="font-size: 12px; color: var(--wp-muted);">
-                      {{ item.score.toFixed(1) }}
-                    </n-text>
-                  </n-flex>
-                  <n-flex align="center" :size="3">
-                    <Icon icon="lucide:eye" :width="13" />
-                    <n-text style="font-size: 12px; color: var(--wp-muted);">
-                      {{ item.view_count }}
-                    </n-text>
-                  </n-flex>
-                </n-flex>
-              </n-flex>
-              <n-ellipsis
-                style="display: block; margin-top: 4px; font-size: 12px; line-height: 1.4; color: var(--wp-muted);"
-              >
-                {{ item.task_title }}
-              </n-ellipsis>
+            <div class="cap">
+              <div class="who">
+                <b>{{ item.username }}</b>
+                <span v-if="item.score" class="score">
+                  <Icon icon="lucide:star" :width="12" />{{ item.score.toFixed(1) }}
+                </span>
+              </div>
+              <div class="task">{{ item.task_display }}. {{ item.task_title }}</div>
             </div>
-          </n-card>
+          </button>
         </div>
       </section>
     </n-spin>
   </main>
+
+  <n-modal
+    :show="!!current"
+    preset="card"
+    style="width: 94vw; max-width: 1280px"
+    :bordered="false"
+    @update:show="(v: boolean) => !v && (viewing = null)"
+  >
+    <template #header>
+      <div class="viewer-head">
+        <b>{{ current?.username }}</b>
+        <span class="muted">{{ current?.task_display }}. {{ current?.task_title }}</span>
+      </div>
+    </template>
+    <template #header-extra>
+      <n-flex v-if="viewing" align="center" :size="4" style="margin-right: 8px">
+        <span class="muted">
+          {{ viewing.item + 1 }} / {{ awards[viewing.section]?.items.length }}
+        </span>
+        <n-button size="small" quaternary :disabled="viewing.item === 0" @click="step(-1)">
+          <template #icon><Icon icon="lucide:arrow-left" /></template>
+        </n-button>
+        <n-button
+          size="small"
+          quaternary
+          :disabled="viewing.item >= (awards[viewing.section]?.items.length ?? 0) - 1"
+          @click="step(1)"
+        >
+          <template #icon><Icon icon="lucide:arrow-right" /></template>
+        </n-button>
+      </n-flex>
+    </template>
+
+    <div v-if="current" class="viewer">
+      <div class="big">
+        <iframe :key="current.submission_id" :srcdoc="docOf(current)" :sandbox="PREVIEW_SANDBOX"></iframe>
+      </div>
+      <aside class="info">
+        <div class="field">
+          <div class="label">获奖</div>
+          <div class="awards">
+            <span v-for="name in awardsOf(current.submission_id)" :key="name" class="award">
+              <Icon icon="lucide:award" :width="13" />{{ name }}
+            </span>
+          </div>
+        </div>
+        <div class="field">
+          <div class="label">得分</div>
+          <div v-if="current.score" class="mono">{{ current.score.toFixed(2) }}</div>
+          <div v-else class="muted">还没有评分</div>
+        </div>
+        <div class="field">
+          <div class="label">看过的次数</div>
+          <div class="mono">{{ current.view_count }}</div>
+        </div>
+        <n-flex vertical :size="8" class="actions">
+          <n-button v-if="current.has_prompt_chain" secondary @click="showChain = true">
+            <template #icon><Icon icon="lucide:sparkles" /></template>
+            看看是怎么问出来的
+          </n-button>
+          <n-button quaternary @click="openFull">
+            <template #icon><Icon icon="lucide:maximize-2" /></template>
+            全屏打开
+          </n-button>
+        </n-flex>
+        <div class="muted hint">← → 切换，Esc 关闭</div>
+      </aside>
+    </div>
+  </n-modal>
+
+  <ChainModal
+    v-if="current"
+    v-model:show="showChain"
+    :submission-id="current.submission_id"
+    :title="`${current.username} · ${current.task_title}`"
+    :asset-base-url="assetBase(current)"
+    from-showcase
+  />
 </template>
 
 <script setup lang="ts">
-import { storageShim } from "../utils/previewStorage"
-import { onMounted, ref } from "vue"
+import { computed, onMounted, onUnmounted, ref, watch } from "vue"
 import { useRouter } from "vue-router"
 import { Icon } from "../icons"
-import { Showcase } from "../api"
+import { Showcase, Submission } from "../api"
+import ChainModal from "../components/submissions/ChainModal.vue"
+import { buildPreviewDocument, PREVIEW_SANDBOX } from "../utils/previewDocument"
 import type { AwardSection, ShowcaseItem } from "../utils/type"
 
 const router = useRouter()
 const loading = ref(true)
 const awards = ref<AwardSection[]>([])
+// 正在看第几个奖项的第几件
+const viewing = ref<{ section: number; item: number } | null>(null)
+const showChain = ref(false)
 
-function buildSrcdoc(item: ShowcaseItem): string {
-  const css = item.css ? `<style>${item.css}</style>` : ""
-  const js = item.js ? `<script>${item.js}<\/script>` : ""
-  return `<!DOCTYPE html><html><head><meta charset="utf-8">${storageShim()}<meta name="viewport" content="width=device-width, initial-scale=1.0"><link rel="stylesheet" href="/normalize.min.css" />${css}</head><body>${item.html ?? ""}${js}</body></html>`
+const current = computed(() =>
+  viewing.value ? (awards.value[viewing.value.section]?.items[viewing.value.item] ?? null) : null,
+)
+
+const assetBase = (item: ShowcaseItem) => `/media/tasks/${item.task_type}/${item.task_display}/`
+
+function docOf(item: ShowcaseItem) {
+  return buildPreviewDocument({
+    html: item.html ?? "",
+    css: item.css ?? "",
+    js: item.js ?? "",
+    assetBaseUrl: assetBase(item),
+  })
 }
 
-function openDetail(item: ShowcaseItem) {
-  const { href } = router.resolve({
-    name: "submission",
-    params: { id: item.submission_id },
-  })
+// 一件作品可能同时在几个奖项里
+function awardsOf(submissionId: string) {
+  return awards.value
+    .filter((a) => a.items.some((i) => i.submission_id === submissionId))
+    .map((a) => a.name)
+}
+
+function jump(id: number) {
+  document.getElementById(`award-${id}`)?.scrollIntoView({ behavior: "smooth", block: "start" })
+}
+
+function open(section: number, item: number) {
+  viewing.value = { section, item }
+}
+
+function step(d: number) {
+  const v = viewing.value
+  if (!v) return
+  const n = awards.value[v.section]?.items.length ?? 0
+  const item = v.item + d
+  if (item >= 0 && item < n) viewing.value = { section: v.section, item }
+}
+
+// 每打开一件记一次浏览
+const counted = new Set<string>()
+watch(current, (item) => {
+  if (!item || counted.has(item.submission_id)) return
+  counted.add(item.submission_id)
+  Submission.incrementView(item.submission_id)
+    .then(() => item.view_count++)
+    .catch(() => {})
+})
+
+function openFull() {
+  if (!current.value) return
+  const { href } = router.resolve({ name: "submission", params: { id: current.value.submission_id } })
   window.open(href, "_blank")
 }
 
-async function init() {
+function onKey(e: KeyboardEvent) {
+  if (!viewing.value || showChain.value) return
+  if (e.key === "ArrowLeft") step(-1)
+  else if (e.key === "ArrowRight") step(1)
+}
+
+onMounted(async () => {
+  window.addEventListener("keydown", onKey)
   try {
     awards.value = await Showcase.list()
   } finally {
     loading.value = false
   }
-}
-
-onMounted(init)
+})
+onUnmounted(() => window.removeEventListener("keydown", onKey))
 </script>
 
 <style scoped>
 .showcase {
   max-width: 1180px;
   margin: 0 auto;
-  padding: 32px 20px 48px;
+  padding: 28px 20px 48px;
 }
 
-.card-grid {
+.page-head {
+  display: flex;
+  align-items: flex-end;
+  justify-content: space-between;
+  flex-wrap: wrap;
+  gap: 12px 24px;
+  margin-bottom: 24px;
+}
+
+h2 {
+  margin: 0 0 4px;
+  font-size: 22px;
+}
+
+.muted {
+  font-size: 12px;
+  font-weight: 400;
+  color: var(--wp-muted);
+}
+
+.page-head .muted {
+  margin: 0;
+  font-size: 13px;
+}
+
+.jump {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.jump a {
+  padding: 3px 10px;
+  border: 1px solid var(--wp-line);
+  border-radius: 999px;
+  font-size: 13px;
+  color: var(--wp-ink);
+  text-decoration: none;
+  background: var(--wp-surface);
+}
+
+.jump a:hover {
+  border-color: var(--wp-brand);
+  color: var(--wp-brand);
+}
+
+section {
+  margin-bottom: 40px;
+  scroll-margin-top: 16px;
+}
+
+.section-head {
+  display: flex;
+  align-items: baseline;
+  gap: 10px;
+}
+
+h3 {
+  margin: 0;
+  font-size: 17px;
+}
+
+.desc {
+  margin: 4px 0 0;
+  font-size: 13px;
+  color: var(--wp-muted);
+}
+
+.grid {
+  margin-top: 14px;
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
   gap: 16px;
 }
 
-.work-card {
+.card {
+  padding: 0;
+  border: 1px solid var(--wp-line);
+  border-radius: 10px;
   overflow: hidden;
+  background: var(--wp-surface);
+  color: var(--wp-ink);
+  font: inherit;
+  text-align: left;
   cursor: pointer;
-  transition: transform 0.2s ease;
+  transition:
+    border-color 0.15s,
+    transform 0.15s;
 }
 
-.work-card:hover {
+.card:hover {
+  border-color: var(--wp-brand);
   transform: translateY(-2px);
 }
 
-.card-preview {
+.thumb {
   position: relative;
-  height: 160px;
+  aspect-ratio: 16 / 10;
   overflow: hidden;
-  background: var(--wp-paper);
+  border-bottom: 1px solid var(--wp-line);
 }
 
-.preview-iframe {
+/* 按 2 倍大小渲染再缩小 */
+.thumb iframe {
+  position: absolute;
+  top: 0;
+  left: 0;
   width: 200%;
   height: 200%;
-  border: none;
+  border: 0;
   transform: scale(0.5);
-  transform-origin: top left;
+  transform-origin: 0 0;
   pointer-events: none;
 }
 
-.preview-overlay {
-  position: absolute;
-  inset: 0;
+.cap {
+  padding: 10px 12px 12px;
 }
 
-.card-info {
-  min-height: 72px;
-  padding: 10px 12px;
-  border-top: 1px solid var(--wp-line);
+.who {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  font-size: 13px;
+}
+
+.who b {
+  min-width: 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.score {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 3px;
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-warn);
+}
+
+.task {
+  margin-top: 4px;
+  font-size: 12px;
+  color: var(--wp-muted);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.viewer-head {
+  display: flex;
+  align-items: baseline;
+  gap: 10px;
+  min-width: 0;
+}
+
+.viewer {
+  display: grid;
+  grid-template-columns: 1fr 230px;
+  gap: 16px;
+  height: 72vh;
+}
+
+.big {
+  display: flex;
+  border: 1px solid var(--wp-line);
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.big iframe {
+  flex: 1;
+  border: 0;
+}
+
+.info {
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+}
+
+.label {
+  margin-bottom: 4px;
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
+.awards {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.award {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 2px 8px;
+  border-radius: 4px;
+  font-size: 13px;
+  color: var(--wp-warn);
+  background: var(--wp-warn-soft);
+}
+
+.mono {
+  font: 15px var(--wp-font-mono);
+}
+
+.actions {
+  margin-top: 4px;
+}
+
+.actions :deep(.n-button) {
+  justify-content: flex-start;
+}
+
+.hint {
+  margin-top: auto;
 }
 </style>

client/src/pages/Submission.vue

@@ -24,7 +24,7 @@ async function init() {
 onMounted(init)
 </script>
 <template>
-  <iframe class="iframe" :sandbox="PREVIEW_SANDBOX" :srcdoc="content"></iframe>
+  <iframe v-if="content" class="iframe" :sandbox="PREVIEW_SANDBOX" :srcdoc="content"></iframe>
 </template>
 <style scoped>
 .iframe {

client/src/pages/Submissions.vue

@@ -1,335 +1,217 @@
 <template>
-  <n-split
-    class="container"
-    direction="horizontal"
-    :default-size="0.5"
-    :min="0.2"
-    :max="0.8"
-  >
-    <template #1>
-      <n-flex
-        vertical
-        style="height: 100%; padding-right: 10px; overflow: hidden"
-      >
-        <n-flex align="center" justify="end">
-            <n-select
-              v-model:value="query.zone"
-              style="width: 110px"
-              clearable
-              placeholder="得分分区"
-              :options="zoneOptions"
-            />
-            <n-input
-              v-if="isAdmin"
-              style="width: 120px"
-              v-model:value="query.username"
-              placeholder="搜索学生"
-              clearable
-            />
-            <n-pagination
-              v-model:page="query.page"
-              :page-size="10"
-              :item-count="count"
-              simple
-            />
-            <n-button
-              secondary
-              style="padding: 0 10px"
-              title="刷新"
-              @click="init"
-            >
-              <Icon :width="16" icon="lucide:refresh-cw" />
+  <div class="subs">
+    <main class="list">
+      <div class="toolbar">
+        <n-input
+          v-model:value="query.username"
+          size="small"
+          clearable
+          placeholder="搜索学生"
+          style="width: 150px"
+        >
+          <template #prefix><Icon icon="lucide:search" :width="14" /></template>
+        </n-input>
+        <n-radio-group v-model:value="query.task_type" size="small">
+          <n-radio-button value="">全部</n-radio-button>
+          <n-radio-button value="tutorial">教程</n-radio-button>
+          <n-radio-button value="challenge">挑战</n-radio-button>
+        </n-radio-group>
+        <n-select
+          v-model:value="query.zone"
+          size="small"
+          clearable
+          placeholder="得分分区"
+          :options="zoneOptions"
+          style="width: 110px"
+        />
+        <n-select
+          v-model:value="query.ordering"
+          size="small"
+          :options="orderOptions"
+          style="width: 130px"
+        />
+        <n-checkbox v-model:checked="query.grouped" size="small">每人每题只看最新一次</n-checkbox>
+        <span class="spacer"></span>
+        <span class="muted">共 {{ count }} 条</span>
+        <n-tooltip>
+          <template #trigger>
+            <n-button size="small" quaternary :loading="loading" @click="load">
+              <template #icon><Icon icon="lucide:refresh-cw" /></template>
             </n-button>
-        </n-flex>
-        <n-data-table
-          flex-height
-          striped
-          :columns="columns"
-          :data="data"
-          :row-key="(row: SubmissionOut) => row.id"
-          :expanded-row-keys="expandedKeys"
-          @update:expanded-row-keys="handleExpand"
-          :row-props="rowProps"
-          :row-class-name="rowClassName"
-          style="flex: 1; min-height: 0"
+          </template>
+          刷新
+        </n-tooltip>
+      </div>
+
+      <n-data-table
+        class="table"
+        size="small"
+        flex-height
+        :loading="loading"
+        :columns="columns"
+        :data="data"
+        :row-key="(row: SubmissionOut) => row.id"
+        :row-props="rowProps"
+        :row-class-name="(row: SubmissionOut) => (row.id === selectedId ? 'row-active' : '')"
+      />
+
+      <n-flex justify="end">
+        <n-pagination
+          v-model:page="query.page"
+          :page-size="PAGE_SIZE"
+          :item-count="count"
+          size="small"
         />
       </n-flex>
-    </template>
-    <template #2>
-      <div style="height: 100%; padding-left: 10px">
-        <Preview
-          v-if="submission.id"
-          :html="html"
-          :css="css"
-          :js="js"
-          :submission-id="submission.id"
-          @after-score="afterScore"
-          @show-code="codeModal = true"
-        />
-      </div>
-    </template>
-  </n-split>
+    </main>
 
-  <CodeModal
-    v-model:show="codeModal"
-    :html="html"
-    :css="css"
-    :js="js"
-    @copy-to-editor="copyToEditor"
-  />
-
-  <ChainModal
-    v-model:show="chainModal"
-    :submission-id="chainSubmissionId"
-    :username="chainUsername"
-  />
+    <aside v-if="selectedId" class="detail">
+      <ReviewPanel
+        :submission-id="selectedId"
+        can-delete
+        @close="selectedId = null"
+        @changed="applyPatch"
+        @deleted="onDeleted"
+      />
+    </aside>
+  </div>
 </template>
 
 <script setup lang="ts">
-import { computed, h, onMounted, onUnmounted, reactive, ref, watch } from "vue"
-import { NButton, NDataTable, NTag, useMessage, type DataTableColumn } from "naive-ui"
+import { h, onMounted, reactive, ref, watch } from "vue"
+import { useRoute, useRouter } from "vue-router"
+import { watchDebounced } from "@vueuse/core"
+import type { DataTableColumn } from "naive-ui"
 import { Icon } from "../icons"
 import { Submission } from "../api"
-import type { SubmissionOut } from "../utils/type"
-import { parseTime } from "../utils/helper"
-import { goHome } from "../utils/helper"
-import { saveTaskCode } from "../composables/useTaskCode"
+import ReviewPanel from "../components/review/ReviewPanel.vue"
 import { TASK_TYPE } from "../utils/const"
-import { watchDebounced } from "@vueuse/core"
-import { useRouter, useRoute } from "vue-router"
+import { parseTime } from "../utils/helper"
+import type { FlagType, SubmissionOut } from "../utils/type"
 
-import Preview from "../components/editor/Preview.vue"
-import TaskTitle from "../components/submissions/TaskTitle.vue"
-import CodeModal from "../components/submissions/CodeModal.vue"
-import ChainModal from "../components/submissions/ChainModal.vue"
-import ExpandedSubTable from "../components/submissions/ExpandedSubTable.vue"
-
-import { submission } from "../store/submission"
-import { roleAdmin, roleSuper } from "../store/user"
+// 全站提交列表，留给超管查某个学生、处理有问题的提交；平时批改用“批改”页
+const PAGE_SIZE = 20
 
 const route = useRoute()
 const router = useRouter()
-const message = useMessage()
 
-// 列表数据
 const data = ref<SubmissionOut[]>([])
 const count = ref(0)
+const loading = ref(false)
+const selectedId = ref<string | null>(null)
+
 const query = reactive({
-  page: Number(route.params.page),
-  username: (Array.isArray(route.query.username)
-    ? ""
-    : (route.query.username ?? "")) as string,
+  page: Number(route.params.page) || 1,
+  username: typeof route.query.username === "string" ? route.query.username : "",
+  task_type: "" as "" | "tutorial" | "challenge",
   zone: null as string | null,
+  ordering: "-created",
+  grouped: true,
 })
 
-// 当前选中提交的代码
-const html = computed(() => submission.value.html)
-const css = computed(() => submission.value.css)
-const js = computed(() => submission.value.js)
-
-// Modal 状态
-const codeModal = ref(false)
-const chainModal = ref(false)
-const chainSubmissionId = ref<string>("")
-const chainUsername = ref<string>("")
-
-// 展开行
-const expandedKeys = ref<string[]>([])
-const expandedData = reactive(new Map<string, SubmissionOut[]>())
-const expandedLoading = reactive(new Set<string>())
-
-// 管理员判断
-const isAdmin = computed(() => roleAdmin.value || roleSuper.value)
-
 // 得分分区（按得分高低和评分人数分的三档，见 server/src/services/score.ts）
-const zoneOptions = [
-  { label: "优秀", value: "featured" },
-  { label: "待定", value: "pending" },
-  { label: "待提高", value: "low" },
+const ZONES: Record<string, string> = { featured: "优秀", pending: "待定", low: "待提高" }
+const zoneOptions = Object.entries(ZONES).map(([value, label]) => ({ label, value }))
+const orderOptions = [
+  { label: "最新的在前", value: "-created" },
+  { label: "得分从高到低", value: "-score" },
+  { label: "得分从低到高", value: "score" },
 ]
 
-function showChain(submissionId: string, username: string) {
-  chainSubmissionId.value = submissionId
-  chainUsername.value = username
-  chainModal.value = true
-}
-
-// 表格列定义
 const columns: DataTableColumn<SubmissionOut>[] = [
-  {
-    type: "expand",
-    expandable: () => true,
-    renderExpand: (row) =>
-      h(ExpandedSubTable, {
-        row,
-        items: expandedData.get(row.id),
-        loading: expandedLoading.has(row.id),
-        onSelect: (id) => getSubmissionByID(id),
-        onDelete: (r, parentId) => handleDelete(r, parentId),
-        "onShow-chain": (submissionId, username) =>
-          showChain(submissionId, username),
-      }),
-  },
-  {
-    title: "分区",
-    key: "zone",
-    width: 64,
-    render: (row) => {
-      const map: Record<
-        string,
-        { label: string; type: "success" | "default" | "warning" }
-      > = {
-        featured: { label: "优秀", type: "success" },
-        pending: { label: "待定", type: "default" },
-        low: { label: "待提高", type: "warning" },
-      }
-      if (!row.zone || !map[row.zone]) return null
-      const { label, type } = map[row.zone]
-      return h(NTag, { size: "small", round: true, type }, () => label)
-    },
-  },
   {
     title: "时间",
     key: "created",
-    width: 110,
-    render: (row) => parseTime(row.created, "YYYY-MM-DD HH:mm:ss"),
-  },
-  {
-    title: "提交者",
-    key: "user",
-    width: 80,
-    render: (row) => row.username,
+    width: 100,
+    render: (row) => h("span", { class: "mono muted" }, parseTime(row.created, "MM-DD HH:mm")),
   },
+  { title: "学生", key: "username", width: 120, ellipsis: { tooltip: true } },
   {
     title: "任务",
     key: "task_title",
-    render: (row) => h(TaskTitle, { submission: row }),
+    ellipsis: { tooltip: true },
+    render: (row) => [
+      h("span", { class: "muted" }, row.task_type === TASK_TYPE.Tutorial ? "教程 " : "挑战 "),
+      `${row.task_display}. ${row.task_title}`,
+    ],
   },
   {
     title: "得分",
     key: "score",
     width: 70,
-    render: (row) => {
-      const myScore = row.my_score > 0 ? String(row.my_score) : "-"
-      const avgScore = row.score > 0 ? row.score.toFixed(2) : "-"
-      return h(
-        "div",
-        { style: { display: "flex", gap: "6px", alignItems: "baseline" } },
-        [
-          h("span", avgScore),
-          h("span", { style: { fontSize: "11px", color: "var(--wp-faint)" } }, myScore),
-        ],
-      )
-    },
+    align: "right",
+    render: (row) =>
+      row.score > 0
+        ? h("span", { class: "mono" }, row.score.toFixed(2))
+        : h("span", { class: "muted" }, "未评"),
   },
   {
-    title: "次数",
+    title: "分区",
+    key: "zone",
+    width: 70,
+    render: (row) => (row.zone ? h("span", { class: `zone z-${row.zone}` }, ZONES[row.zone]) : null),
+  },
+  {
+    title: "共交",
     key: "submit_count",
     width: 60,
-    render: (row) => row.submit_count || "-",
-  },
-  {
-    title: "浏览",
-    key: "view_count",
-    width: 60,
-    render: (row) => row.view_count || "-",
+    align: "right",
+    render: (row) => h("span", { class: "mono muted" }, `${row.submit_count} 次`),
   },
 ]
 
-async function handleExpand(keys: (string | number)[]) {
-  const strKeys = keys.map(String)
-  const newKey = strKeys.find((k) => !expandedKeys.value.includes(k))
-  expandedKeys.value = strKeys
-  if (newKey) {
-    const row = data.value.find((d) => d.id === newKey)
-    if (row && !expandedData.has(newKey)) {
-      expandedLoading.add(newKey)
-      try {
-        const items = await Submission.listByUserTask(row.userid, row.task_id)
-        expandedData.set(newKey, items)
-      } finally {
-        expandedLoading.delete(newKey)
-      }
-    }
-  }
-}
-
-async function handleDelete(row: SubmissionOut, parentId: string) {
-  try {
-    await Submission.delete(row.id)
-  } catch (error: any) {
-    message.error(error.response?.data?.detail ?? "删除失败，请重试")
-    return
-  }
-  const items = expandedData.get(parentId)
-  if (items)
-    expandedData.set(
-      parentId,
-      items.filter((d) => d.id !== row.id),
-    )
-  if (submission.value.id === row.id) submission.value.id = ""
-  const res = await Submission.list(query)
-  data.value = res.items
-  count.value = res.count
-}
-
 function rowProps(row: SubmissionOut) {
   return {
     style: { cursor: "pointer" },
-    onClick: () => {
-      getSubmissionByID(row.id)
-      handleExpand(
-        expandedKeys.value.includes(row.id)
-          ? expandedKeys.value.filter((k) => k !== row.id)
-          : [...expandedKeys.value, row.id],
-      )
-    },
+    onClick: () => (selectedId.value = row.id),
   }
 }
 
-function rowClassName(row: SubmissionOut) {
-  return submission.value.id === row.id ? "row-active" : ""
-}
-
 // 快速翻页时只用最后一次请求的结果
-let initSeq = 0
+let seq = 0
 
-async function init() {
-  const seq = ++initSeq
-  expandedKeys.value = []
-  expandedData.clear()
-  const res = await Submission.list(query)
-  if (seq !== initSeq) return
-  data.value = res.items
-  count.value = res.count
+async function load() {
+  const s = ++seq
+  loading.value = true
+  try {
+    const res = await Submission.list({
+      page: query.page,
+      page_size: PAGE_SIZE,
+      username: query.username || undefined,
+      task_type: query.task_type || undefined,
+      zone: query.zone,
+      ordering: query.ordering,
+      grouped: query.grouped,
+    })
+    if (s !== seq) return
+    data.value = res.items
+    count.value = res.count
+  } finally {
+    if (s === seq) loading.value = false
+  }
 }
 
-let detailSeq = 0
-
-async function getSubmissionByID(id: string) {
-  const seq = ++detailSeq
-  const res = await Submission.get(id)
-  if (seq === detailSeq) submission.value = res
+function applyPatch(patch: { id: string; my_score?: number; score?: number; flag?: FlagType }) {
+  const row = data.value.find((d) => d.id === patch.id)
+  if (row) Object.assign(row, patch)
 }
 
-function afterScore() {
-  data.value = data.value.map((d) => {
-    if (d.id === submission.value.id) d.my_score = submission.value.my_score
-    return d
-  })
+function onDeleted() {
+  selectedId.value = null
+  load()
 }
 
-function copyToEditor() {
-  // 教程和挑战的代码都按任务各存一份，打开那个任务时读到
-  saveTaskCode(submission.value.task_id, { html: html.value, css: css.value, js: js.value })
-  goHome(router, submission.value.task_type, submission.value.task_display)
+// 换了筛选条件就回到第一页
+function reset() {
+  if (query.page !== 1) query.page = 1
+  else load()
 }
 
 watch(
   () => query.page,
-  (v) => {
-    init()
-    router.push({ params: { page: v } })
+  (page) => {
+    load()
+    router.push({ params: { page } })
   },
 )
 // 浏览器前进 / 后退时，页码跟着地址栏走
@@ -340,53 +222,78 @@ watch(
     if (page !== query.page) query.page = page
   },
 )
-watchDebounced(
-  () => query.username,
-  () => {
-    if (query.page !== 1) query.page = 1
-    else init()
-  },
-  { debounce: 500, maxWait: 1000 },
-)
-watch(
-  () => query.zone,
-  () => {
-    if (query.page !== 1) query.page = 1
-    else init()
-  },
-)
+watch(() => [query.task_type, query.zone, query.ordering, query.grouped], reset)
+watchDebounced(() => query.username, reset, { debounce: 500, maxWait: 1000 })
 
-onMounted(init)
-onUnmounted(() => {
-  submission.value = {
-    id: "",
-    userid: 0,
-    username: "",
-    task_id: 0,
-    task_display: 0,
-    task_title: "",
-    task_type: TASK_TYPE.Tutorial,
-    score: 0,
-    my_score: 0,
-    html: "",
-    css: "",
-    js: "",
-    submit_count: 0,
-    view_count: 0,
-    created: new Date(),
-    modified: new Date(),
-  }
-})
+onMounted(load)
 </script>
 
 <style scoped>
-.container {
-  padding: 10px;
-  box-sizing: border-box;
-  width: 100%;
+.subs {
+  height: 100%;
+  display: flex;
+  min-width: 0;
 }
 
-:deep(.row-active td) {
-  background-color: var(--wp-brand-soft) !important;
+.list {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 10px 12px;
+}
+
+.toolbar {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 10px;
+}
+
+.spacer {
+  flex: 1;
+}
+
+.table {
+  flex: 1;
+  min-height: 0;
+}
+
+.table :deep(.row-active td) {
+  background: var(--wp-brand-soft) !important;
+}
+
+.table :deep(.mono) {
+  font-family: var(--wp-font-mono);
+}
+
+.muted,
+.table :deep(.muted) {
+  font-size: 12px;
+  color: var(--wp-muted);
+}
+
+.table :deep(.zone) {
+  font-size: 12px;
+}
+
+.table :deep(.z-featured) {
+  color: var(--wp-brand);
+}
+
+.table :deep(.z-low) {
+  color: var(--wp-warn);
+}
+
+.table :deep(.z-pending) {
+  color: var(--wp-muted);
+}
+
+.detail {
+  width: 440px;
+  flex: none;
+  border-left: 1px solid var(--wp-line);
+  min-height: 0;
 }
 </style>

client/src/router.ts

@@ -44,9 +44,10 @@ const routes: RouteRecordRaw[] = [
     meta: { auth: true },
   },
   {
-    path: "/submissions/:page",
+    // 学生（和老师自己）的“我的提交”；:page 是旧链接留下的，不用了
+    path: "/submissions/:page?",
     name: "submissions",
-    component: () => import("./pages/Submissions.vue"),
+    component: () => import("./pages/MySubmissions.vue"),
     meta: { auth: true },
   },
   {
@@ -116,7 +117,7 @@ const routes: RouteRecordRaw[] = [
         component: () => import("./pages/Review.vue"),
       },
       {
-        // 和顶层的 /submissions 是同一个页面，放在教学侧栏里打开，侧栏不会消失
+        // 全站提交列表（超管），和学生的“我的提交”是两个页面
         path: "submissions/:page",
         name: "teach-submissions",
         component: () => import("./pages/Submissions.vue"),

client/src/store/prompt.ts

@@ -19,6 +19,8 @@ export const conversationId = ref<string>("")
 export const connected = ref(false)
 export const streaming = ref(false)
 export const streamingContent = ref("")
+// 这次提问发出的时间：AI 先思考，第一个字可能一两分钟后才出来，界面据此显示等了多久
+export const streamStartedAt = ref(0)
 export const currentTaskId = ref(0)
 // 新代码交给工作台处理：init 是连上时对话里最新的那一版，complete 是 AI 刚生成的
 let _codeSink:
@@ -106,6 +108,7 @@ export function disconnectPrompt() {
 export function sendPrompt(content: string, model: string = "") {
   if (!socket.send({ type: "message", content, model })) return
   streaming.value = true
+  streamStartedAt.value = Date.now()
   messages.value.push({ role: "user", content })
 }
 

client/src/store/submission.ts

@@ -1,22 +0,0 @@
-import { ref } from "vue"
-import type { SubmissionAll } from "../utils/type"
-import { TASK_TYPE } from "../utils/const"
-
-export const submission = ref<SubmissionAll>({
-  id: "",
-  userid: 0,
-  username: "",
-  task_id: 0,
-  task_display: 0, // 这是序号
-  task_title: "",
-  task_type: TASK_TYPE.Tutorial,
-  score: 0.0,
-  my_score: 0,
-  submit_count: 0,
-  view_count: 0,
-  html: "",
-  css: "",
-  js: "",
-  created: new Date(),
-  modified: new Date(),
-})

client/src/utils/helper.ts

@@ -21,5 +21,20 @@ export function goHome(router: any, type: TASK_TYPE, display: number) {
 export function sourceLabel(source: string | null | undefined) {
   if (source === "edit") return "手改"
   if (source === "manual") return "外部 AI"
+  if (source === "guidance") return "引导"
   return "AI 对话"
 }
+
+// 提问的 Bloom 等级（services/classifier.ts 后台打的标签）
+export const PROMPT_LEVELS: Record<number, { name: string; desc: string }> = {
+  1: { name: "记忆", desc: "只说要做什么或只报结果，没有自己的要求和解释" },
+  2: { name: "理解", desc: "想弄懂原理：问为什么、是什么意思、怎么做到的" },
+  3: { name: "应用", desc: "提出具体要求（颜色、布局、功能），照搬题目要求也算" },
+  4: { name: "分析", desc: "说清在什么操作、哪个位置出了什么问题，或推测原因" },
+  5: { name: "评价", desc: "带理由评判现有结果，或比较不同做法再选择" },
+  6: { name: "创造", desc: "题目之外自己构思的整体设计：主题、玩法、交互" },
+}
+
+export function levelLabel(level: number | null | undefined) {
+  return level ? `L${level} ${PROMPT_LEVELS[level]?.name ?? ""}`.trim() : ""
+}

client/src/utils/previewDocument.ts

@@ -30,8 +30,9 @@ export function buildPreviewDocument({
     <title>预览</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     ${assetBaseUrl ? `<base href="${assetBaseUrl}">` : ""}
-    <style>${css}</style>
+    <!-- normalize 要在学生的样式前面，否则同样写法的规则（body、h1 的边距等）会被它盖掉 -->
     <link rel="stylesheet" href="/normalize.min.css" />
+    <style>${css}</style>
   </head>
   <body>
     ${html}

client/src/utils/type.ts

@@ -167,6 +167,8 @@ export interface SubmissionAll {
   view_count: number
   created: Date
   modified: Date
+  // 交的时候写的反思，只有老师和作者本人拿得到
+  reflection?: string | null
 }
 
 export interface UserTag {
@@ -181,25 +183,10 @@ export interface SubmissionCountBucket {
   count_4_plus: number
 }
 
-export interface ScoreBucket {
-  range_1_2: number
-  range_2_3: number
-  range_3_4: number
-  range_4_5: number
-  range_5: number
-}
-
-export interface FlagStats {
-  red: number
-  blue: number
-  green: number
-  yellow: number
-}
-
-export interface TopViewedItem {
+export interface TopScoredItem {
   username: string
   classname: string
-  view_count: number
+  score: number
   submission_id: string
 }
 
@@ -211,10 +198,21 @@ export interface TaskStatsOut {
   unsubmitted_users: UserTag[]
   unrated_users: UserTag[]
   submission_count_distribution: SubmissionCountBucket
-  score_distribution: ScoreBucket
-  flag_stats: FlagStats
+  present_count: number
   classes: string[]
-  top_viewed: TopViewedItem[]
+  top_scored: TopScoredItem[]
+  prompts: PromptChainStats
+}
+
+// 课堂总结里每人最新一版的提示词链概况
+export interface PromptChainStats {
+  with_chain: number
+  one_round: number
+  external: number
+  used_guidance: number
+  avg_rounds: number
+  // L1–L6 各有几次提问
+  levels: number[]
 }
 
 export type GradebookTaskType = "tutorial" | "challenge"
@@ -277,6 +275,7 @@ export interface ShowcaseItem {
   username: string
   task_title: string
   task_display: number
+  task_type: TASK_TYPE
   score: number
   view_count: number
   html: string | null
@@ -317,28 +316,22 @@ export interface AwardItemUpdateIn {
   sort_order: number
 }
 
-export interface ShowcaseSubmissionLookupOut {
-  submission_id: string
-  username: string
-  task_title: string
-  task_display: number
-  score: number
-  view_count: number
-  has_prompt_chain: boolean
-}
-
 export interface AwardItemManageOut {
   id: number
   submission_id: string
   username: string
   task_title: string
   task_display: number
+  task_type: TASK_TYPE
   score: number
   view_count: number
   sort_order: number
   awarded_at: string
   has_prompt_chain: boolean
   is_stale: boolean
+  html: string | null
+  css: string | null
+  js: string | null
 }
 
 export interface ShowcaseDetail {
@@ -346,6 +339,7 @@ export interface ShowcaseDetail {
   username: string
   task_title: string
   task_display: number
+  task_type: TASK_TYPE
   score: number
   view_count: number
   html: string | null
@@ -410,6 +404,7 @@ export interface ReviewSubmission {
 export interface ReviewStudent {
   user_id: number
   username: string
+  classname: string
   submission: ReviewSubmission | null
 }
 
@@ -417,6 +412,7 @@ export interface PeerWork {
   id: string
   // 自己打分之前是 null
   username: string | null
+  classname: string
   score: number | null
   my_score: number
   created: string

server/scripts/prompt-stats.ts

@@ -0,0 +1,109 @@
+/**
+ * 对比某个日期前后，学生和 AI 对话的情况（比如改了 AI 的回复方式以后有没有变化）。
+ * 日期按北京时间，分界日期那天算“之后”。只读，不改数据。
+ *
+ *   bun scripts/prompt-stats.ts <分界日期> [--from 日期] [--to 日期]
+ *   bun scripts/prompt-stats.ts 2026-10-28 --from 2026-09-01
+ *
+ * 层级是打标签时的标准；分类标准改过以后，先跑 classify-prompts.ts --force 重打，前后才好比。
+ */
+import { all, toDbTime } from "../src/db"
+
+const args = process.argv.slice(2)
+const opt = (name: string) => {
+  const i = args.indexOf(name)
+  return i >= 0 ? args[i + 1] : undefined
+}
+const split = args[0]
+if (!split || !/^\d{4}-\d{2}-\d{2}$/.test(split)) {
+  console.log("用法：bun scripts/prompt-stats.ts <分界日期> [--from 日期] [--to 日期]")
+  process.exit(1)
+}
+const day = (d: string) => toDbTime(new Date(`${d}T00:00:00+08:00`))
+const nextDay = (d: string) => toDbTime(new Date(new Date(`${d}T00:00:00+08:00`).getTime() + 86_400_000))
+const periods = [
+  { name: `${opt("--from") ?? "最早"} ~ ${split} 之前`, from: opt("--from") ? day(opt("--from")!) : "", to: day(split) },
+  { name: `${split} ~ ${opt("--to") ?? "现在"}`, from: day(split), to: opt("--to") ? nextDay(opt("--to")!) : "9999" },
+]
+
+// 和 PromptPanel 里一样：只说“不行”“没反应”的短抱怨；“出问题了”拼出来的句子
+const VAGUE =
+  /不行|不对|没反应|没用|没效果|用不了|不能用|不能玩|动不了|进不去|打不开|没显示|不显示|显示不出|bug|出错|报错|错了|坏了|白屏|空白|有问题/i
+const PROBLEM = /^我.+，(想看到.+，)?但实际.+。$/s
+
+type Msg = {
+  conversation_id: string
+  source: string
+  content: string
+  prompt_level: number | null
+  created: string
+  // 在这个对话的 AI 对话里是第几轮（只数 conversation）
+  round: number | null
+}
+
+// 批处理脚本，整表扫一遍没关系
+const msgs = all<Msg>(
+  `SELECT conversation_id, source, content, prompt_level, created,
+     CASE WHEN source = 'conversation'
+       THEN ROW_NUMBER() OVER (PARTITION BY conversation_id, source = 'conversation' ORDER BY created, id) END AS round
+   FROM prompt_message WHERE role = 'user'`,
+)
+const subs = all<{ created: string; reflected: number }>(
+  `SELECT s.created, r.submission_id IS NOT NULL AS reflected
+   FROM submission_submission s JOIN task_task t ON t.id = s.task_id
+   LEFT JOIN submission_reflection r ON r.submission_id = s.id
+   WHERE t.task_type = 'challenge'`,
+)
+
+const pct = (n: number, d: number) => (d ? `${((n / d) * 100).toFixed(1)}%` : "—")
+const chars = (s: string) => [...s.trim()].length
+
+function stats(from: string, to: string) {
+  const inRange = (t: string) => t >= from && t < to
+  const ms = msgs.filter((m) => inRange(m.created))
+  const byConv = new Map<string, Msg[]>()
+  for (const m of ms) byConv.set(m.conversation_id, [...(byConv.get(m.conversation_id) ?? []), m])
+
+  const convs = [...byConv.values()]
+  const ai = convs.filter((c) => c.some((m) => m.source === "conversation"))
+  const manualOnly = convs.filter((c) => c.some((m) => m.source === "manual") && !c.some((m) => m.source === "conversation"))
+  const rounds = ai.map((c) => c.filter((m) => m.source === "conversation").length)
+  const bucket = (lo: number, hi: number) => rounds.filter((n) => n >= lo && n <= hi).length
+
+  const asked = ms.filter((m) => m.source === "conversation")
+  const levels = [1, 2, 3, 4, 5, 6].map((l) => asked.filter((m) => m.prompt_level === l).length)
+  const leveled = levels.reduce((a, b) => a + b, 0)
+  const later = asked.filter((m) => (m.round ?? 1) >= 2 && m.prompt_level)
+  const vague = asked.filter((m) => chars(m.content) <= 15 && VAGUE.test(m.content))
+  const problem = asked.filter((m) => PROBLEM.test(m.content.trim()))
+  const manual = ms.filter((m) => m.source === "manual")
+  const s = subs.filter((x) => inRange(x.created))
+
+  return [
+    ["有对话或版本的作品", `${convs.length}`],
+    ["只粘贴外部代码", `${manualOnly.length}（${pct(manualOnly.length, convs.length)}）`],
+    ["和平台 AI 对话的作品", `${ai.length}`],
+    ["  平均轮数", ai.length ? (rounds.reduce((a, b) => a + b, 0) / ai.length).toFixed(2) : "—"],
+    ["  1 轮", pct(bucket(1, 1), ai.length)],
+    ["  2–3 轮", pct(bucket(2, 3), ai.length)],
+    ["  4–6 轮", pct(bucket(4, 6), ai.length)],
+    ["  7 轮以上", pct(bucket(7, Infinity), ai.length)],
+    ["提问（AI 对话）", `${asked.length}，已分级 ${leveled}`],
+    ...levels.map((n, i) => [`  L${i + 1}`, pct(n, leveled)]),
+    ["  L4–L6", pct(levels[3]! + levels[4]! + levels[5]!, leveled)],
+    ["  第 2 轮起的 L1", pct(later.filter((m) => m.prompt_level === 1).length, later.length)],
+    ["  只说“不行”的短抱怨", `${vague.length}（${pct(vague.length, asked.length)}）`],
+    ["  用“出问题了”", `${problem.length}（${pct(problem.length, asked.length)}）`],
+    ["用了“帮我写清楚”的作品", `${convs.filter((c) => c.some((m) => m.source === "guidance")).length}（占和 AI 对话的 ${pct(ai.filter((c) => c.some((m) => m.source === "guidance")).length, ai.length)}）`],
+    ["外部 AI 提示词", `${manual.length}，12 字以内 ${pct(manual.filter((m) => chars(m.content) <= 12).length, manual.length)}`],
+    ["挑战提交", `${s.length}，写了反思 ${pct(s.filter((x) => x.reflected).length, s.length)}`],
+  ]
+}
+
+const [a, b] = periods.map((p) => stats(p.from, p.to))
+// 终端里中文占两格
+const cols = (k: string) => [...k].reduce((n, ch) => n + (ch.codePointAt(0)! >= 0x2e80 ? 2 : 1), 0)
+const width = Math.max(...a!.map(([k]) => cols(k!))) + 2
+const pad = (k: string) => k + " ".repeat(width - cols(k))
+console.log(`${pad("")}${periods[0]!.name}  →  ${periods[1]!.name}`)
+for (const [i, [k, v]] of a!.entries()) console.log(`${pad(k!)}${v}  →  ${b![i]![1]}`)

server/src/db.ts

@@ -47,6 +47,12 @@ CREATE INDEX IF NOT EXISTS "prompt_conversation_user_id_ecc418b3" ON "prompt_con
 CREATE TABLE IF NOT EXISTS "prompt_message" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "role" varchar(10) NOT NULL, "content" text NOT NULL, "code_html" text NULL, "code_css" text NULL, "code_js" text NULL, "created" datetime NOT NULL, "conversation_id" char(32) NOT NULL REFERENCES "prompt_conversation" ("id") DEFERRABLE INITIALLY DEFERRED, "prompt_level" integer NULL, "source" varchar(12) NOT NULL, "submission_id" char(32) NULL UNIQUE REFERENCES "submission_submission" ("id") DEFERRABLE INITIALLY DEFERRED);
 CREATE INDEX IF NOT EXISTS "prompt_message_conversation_id_af18dd4b" ON "prompt_message" ("conversation_id");
 CREATE INDEX IF NOT EXISTS "prompt_message_prompt_level_e461b596" ON "prompt_message" ("prompt_level");
+-- 课堂总结统计提示词链用的覆盖索引：只读小列，不碰 content / code_*
+CREATE INDEX IF NOT EXISTS "prompt_message_chain" ON "prompt_message" ("conversation_id", "created", "id", "role", "source", "prompt_level");
+CREATE INDEX IF NOT EXISTS "prompt_message_submission" ON "prompt_message" ("submission_id", "conversation_id", "created", "source") WHERE "submission_id" IS NOT NULL;
+
+-- 学生交作品时写的一句反思（最满意的改动和理由）；可以不写。删提交时跟着删
+CREATE TABLE IF NOT EXISTS "submission_reflection" ("submission_id" char(32) NOT NULL PRIMARY KEY REFERENCES "submission_submission" ("id") ON DELETE CASCADE, "content" text NOT NULL, "modified" datetime NOT NULL);
 
 -- 登录用 JWT：access token 不落库，refresh token 只存 sha256
 DROP TABLE IF EXISTS "auth_session";

server/src/routes/review.ts

@@ -14,6 +14,15 @@ function requireStaff(user: User) {
 // 和成绩册一致：班里的学生包括当助教的 admin
 const CLASS_MEMBERS = `SELECT id FROM account_user
   WHERE classname = $classname AND role IN ('normal', 'admin') AND is_active = 1`
+// 不传班级时：所有有班级的学生
+const ALL_MEMBERS = `SELECT id FROM account_user
+  WHERE classname != '' AND role IN ('normal', 'admin') AND is_active = 1`
+
+function members(classname: string | undefined) {
+  return classname
+    ? { sql: CLASS_MEMBERS, params: { classname } as Record<string, unknown> }
+    : { sql: ALL_MEMBERS, params: {} as Record<string, unknown> }
+}
 
 // 每个人在这个任务上最新的一次提交，以及提交了几次。
 // 先只在 slim 覆盖索引上找，再按 rowid 读这几行的完整内容（代码是宽列，见 CLAUDE.md）
@@ -64,17 +73,16 @@ router.get("/options", (c) => {
 })
 
 // 一个班每个任务交了几个人
+// 不传 classname 就是全部班级
 router.get("/progress", (c) => {
   requireStaff(requireUser(c))
-  const { classname } = query(c, z.object({ classname: z.string().min(1) }))
-  const studentCount = get<{ n: number }>(
-    `SELECT COUNT(*) AS n FROM (${CLASS_MEMBERS})`,
-    { classname },
-  )!.n
+  const { classname } = query(c, z.object({ classname: z.string().min(1).optional() }))
+  const m = members(classname)
+  const studentCount = get<{ n: number }>(`SELECT COUNT(*) AS n FROM (${m.sql})`, m.params)!.n
   const rows = all<{ task_id: number; n: number }>(
     `SELECT s.task_id, COUNT(DISTINCT s.user_id) AS n FROM submission_submission s
-     WHERE s.user_id IN (${CLASS_MEMBERS}) GROUP BY s.task_id`,
-    { classname },
+     WHERE s.user_id IN (${m.sql}) GROUP BY s.task_id`,
+    m.params,
   )
   return c.json({
     student_count: studentCount,
@@ -86,15 +94,18 @@ router.get("/progress", (c) => {
 router.get("/class", (c) => {
   const user = requireUser(c)
   requireStaff(user)
-  const q = query(c, z.object({ classname: z.string().min(1), task_id: z.coerce.number().int() }))
-  orNotFound(get(`SELECT 1 FROM task_task WHERE id = $id`, { id: q.task_id }), "任务不存在")
-  const students = all<{ id: number; username: string }>(
-    `SELECT id, username FROM account_user
-     WHERE classname = $classname AND role IN ('normal', 'admin') AND is_active = 1
-     ORDER BY username, id`,
-    { classname: q.classname },
+  const q = query(
+    c,
+    z.object({ classname: z.string().min(1).optional(), task_id: z.coerce.number().int() }),
   )
-  const latest = latestByUser(q.task_id, CLASS_MEMBERS, { classname: q.classname })
+  orNotFound(get(`SELECT 1 FROM task_task WHERE id = $id`, { id: q.task_id }), "任务不存在")
+  const m = members(q.classname)
+  const students = all<{ id: number; username: string; classname: string }>(
+    `SELECT id, username, classname FROM account_user WHERE id IN (${m.sql})
+     ORDER BY classname, username, id`,
+    m.params,
+  )
+  const latest = latestByUser(q.task_id, m.sql, m.params)
   const rows = loadRows([...latest.values()].map((l) => l.rid), user.id)
   return c.json(
     students.map((s) => {
@@ -102,6 +113,7 @@ router.get("/class", (c) => {
       return {
         user_id: s.id,
         username: s.username,
+        classname: s.classname,
         submission: r
           ? {
               id: uuidOut(r.id),
@@ -122,33 +134,44 @@ router.get("/class", (c) => {
   )
 })
 
-// 学生看本班同学在这道题上的作品：自己交过才开放；自己打分之前不显示作者和得分
+// 学生看同学在这道题上的作品：自己交过才开放；自己打分之前不显示作者和得分。
+// 老师不受这两条限制。scope=class 只看本班（默认，一个班几十份），scope=all 看全校所有班
 router.get("/peers/:task_id", (c) => {
   const user = requireUser(c)
   const taskId = intParam(c, "task_id")
+  const { scope } = query(c, z.object({ scope: z.enum(["class", "all"]).default("class") }))
   orNotFound(get(`SELECT 1 FROM task_task WHERE id = $id`, { id: taskId }), "任务不存在")
-  const submitted = get(
-    `SELECT 1 FROM submission_submission WHERE user_id = $me AND task_id = $task_id LIMIT 1`,
-    { me: user.id, task_id: taskId },
-  )
-  if (!submitted || !user.classname) return c.json({ locked: true, items: [] })
+  const staff = isStaff(user)
+  const submitted =
+    staff ||
+    get(`SELECT 1 FROM submission_submission WHERE user_id = $me AND task_id = $task_id LIMIT 1`, {
+      me: user.id,
+      task_id: taskId,
+    })
+  if (!submitted) return c.json({ locked: true, items: [] })
+  const byClass = scope === "class" && !!user.classname
   const members = `SELECT id FROM account_user
-    WHERE classname = $classname AND role = 'normal' AND is_active = 1 AND id != $me`
-  const params = { classname: user.classname, me: user.id }
+    WHERE role = 'normal' AND is_active = 1 AND id != $me
+      ${byClass ? "AND classname = $classname" : ""}`
+  const params = byClass ? { classname: user.classname, me: user.id } : { me: user.id }
   const latest = latestByUser(taskId, members, params)
   const rows = loadRows([...latest.values()].map((l) => l.rid), user.id)
-  const names = new Map(
-    all<{ id: number; username: string }>(`SELECT id, username FROM account_user WHERE id IN (${members})`, params).map(
-      (u) => [u.id, u.username],
-    ),
+  const people = new Map(
+    all<{ id: number; username: string; classname: string }>(
+      `SELECT id, username, classname FROM account_user WHERE id IN (${members})`,
+      params,
+    ).map((u) => [u.id, u]),
   )
   const items = [...rows.values()]
     .sort((a, b) => (a.created < b.created ? 1 : -1))
     .map((r) => {
-      const rated = (r.my_score || 0) > 0
+      const rated = staff || (r.my_score || 0) > 0
+      const p = people.get(r.user_id)
       return {
         id: uuidOut(r.id),
-        username: rated ? names.get(r.user_id) : null,
+        username: rated ? p?.username : null,
+        // 班级不算身份信息，打分前也显示
+        classname: p?.classname ?? "",
         score: rated ? r.score : null,
         my_score: r.my_score || 0,
         created: iso(r.created),

server/src/routes/showcase.ts

@@ -20,7 +20,7 @@ const ORDER_BY: Record<string, string> = {
 const HAS_CHAIN = `EXISTS (SELECT 1 FROM prompt_message m WHERE m.submission_id = s.id) AS has_prompt_chain`
 
 const ITEM_SELECT = `SELECT sa.id, sa.submission_id, sa.sort_order, sa.awarded_at, sa.is_stale,
-    u.username, t.title AS task_title, t.display AS task_display,
+    u.username, t.title AS task_title, t.display AS task_display, t.task_type,
     s.score, s.view_count, s.html, s.css, s.js, ${HAS_CHAIN}
   FROM submission_submissionaward sa
   JOIN submission_submission s ON s.id = sa.submission_id
@@ -34,12 +34,17 @@ function itemManageOut(r: any) {
     username: r.username,
     task_title: r.task_title,
     task_display: r.task_display,
+    task_type: r.task_type,
     score: r.score,
     view_count: r.view_count,
     sort_order: r.sort_order,
     awarded_at: iso(r.awarded_at),
     has_prompt_chain: bool(r.has_prompt_chain),
     is_stale: bool(r.is_stale),
+    // 管理页的缩略图要用
+    html: r.html,
+    css: r.css,
+    js: r.js,
   }
 }
 
@@ -104,6 +109,7 @@ router.get("/", (c) => {
         username: r.username,
         task_title: r.task_title,
         task_display: r.task_display,
+        task_type: r.task_type,
         score: r.score,
         view_count: r.view_count,
         html: r.html,
@@ -162,31 +168,6 @@ router.delete("/manage/awards/:award_id", (c) => {
   return c.json({ message: "删除成功" })
 })
 
-router.get("/manage/submissions/:submission_id", (c) => {
-  requireAdmin(c)
-  const id = uuidParam(c, "submission_id")
-  const s = orNotFound(
-    get(
-      `SELECT s.id, u.username, t.title AS task_title, t.display AS task_display,
-         s.score, s.view_count, ${HAS_CHAIN}
-       FROM submission_submission s
-       JOIN account_user u ON u.id = s.user_id
-       JOIN task_task t ON t.id = s.task_id
-       WHERE s.id = $id`,
-      { id },
-    ),
-  )
-  return c.json({
-    submission_id: uuidOut(s.id),
-    username: s.username,
-    task_title: s.task_title,
-    task_display: s.task_display,
-    score: s.score,
-    view_count: s.view_count,
-    has_prompt_chain: bool(s.has_prompt_chain),
-  })
-})
-
 router.get("/manage/awards/:award_id/items", (c) => {
   requireAdmin(c)
   const award = orNotFound(
@@ -301,7 +282,7 @@ router.get("/:submission_id", (c) => {
   assertAwarded(id)
   const s = orNotFound(
     get(
-      `SELECT s.id, u.username, t.title AS task_title, t.display AS task_display,
+      `SELECT s.id, u.username, t.title AS task_title, t.display AS task_display, t.task_type,
          s.score, s.view_count, s.html, s.css, s.js, ${HAS_CHAIN}
        FROM submission_submission s
        JOIN account_user u ON u.id = s.user_id
@@ -320,6 +301,7 @@ router.get("/:submission_id", (c) => {
     username: s.username,
     task_title: s.task_title,
     task_display: s.task_display,
+    task_type: s.task_type,
     score: s.score,
     view_count: s.view_count,
     html: s.html,

server/src/routes/submission.ts

@@ -26,6 +26,7 @@ import {
   getActiveConversation,
   getPrecedingUserMessage,
   insertMessage,
+  promptChainStats,
   type MessageRow,
 } from "../services/prompt"
 import { pyRound } from "../services/pyround"
@@ -37,16 +38,15 @@ const router = new Hono<Env>()
 router.route("/showcase", showcase)
 router.route("/review", review)
 
-// 学生能看的提交：自己的、进了作品展的、本班同学在自己也交过的题上的。老师都能看
+const inShowcase = (id: string) => !!get(`SELECT 1 FROM submission_submissionaward WHERE submission_id = $id`, { id })
+
+// 学生能看的提交：自己的、进了作品展的、自己也交过的那道题上同学（任何班）的。老师都能看
 function canView(user: User, sub: { id: string; user_id: number; task_id: number }) {
   if (isStaff(user) || sub.user_id === user.id) return true
-  if (get(`SELECT 1 FROM submission_submissionaward WHERE submission_id = $id`, { id: sub.id })) return true
-  if (!user.classname) return false
+  if (inShowcase(sub.id)) return true
   return !!get(
-    `SELECT 1 FROM account_user u
-     WHERE u.id = $owner AND u.classname = $classname
-       AND EXISTS (SELECT 1 FROM submission_submission s WHERE s.user_id = $me AND s.task_id = $task_id)`,
-    { owner: sub.user_id, classname: user.classname, me: user.id, task_id: sub.task_id },
+    `SELECT 1 FROM submission_submission s WHERE s.user_id = $me AND s.task_id = $task_id LIMIT 1`,
+    { me: user.id, task_id: sub.task_id },
   )
 }
 
@@ -120,6 +120,7 @@ router.post("/", async (c) => {
       js: z.string().nullable().optional(),
       prompt: z.string().nullable().optional(),
       message_id: z.number().int().nullable().optional(), // 关联的 assistant message
+      reflection: z.string().max(1000).nullable().optional(), // 交的时候写的一句反思，可以不写
     }),
   )
   const task = orNotFound(
@@ -131,6 +132,8 @@ router.post("/", async (c) => {
 
   const code = { html: p.html ?? null, css: p.css ?? null, js: p.js ?? null }
 
+  const reflection = p.reflection?.trim() || null
+
   const { submissionId, newUserMsgId } = tx(() => {
     let manualAsstMsgId: number | null = null
     let linkedMsg: MessageRow | null = null
@@ -203,6 +206,15 @@ router.post("/", async (c) => {
     return { submissionId: id, newUserMsgId }
   })
 
+  // 同一版再交时没写就留着上次写的
+  if (reflection) {
+    run(
+      `INSERT INTO submission_reflection (submission_id, content, modified) VALUES ($id, $content, $ts)
+       ON CONFLICT (submission_id) DO UPDATE SET content = excluded.content, modified = excluded.modified`,
+      { id: submissionId, content: reflection, ts: now() },
+    )
+  }
+
   // 只对新增的提示词做层级分类
   if (
     newUserMsgId !== null &&
@@ -339,7 +351,9 @@ router.get("/random-for-rating", (c) => {
   }
   if (user.role === Role.NORMAL && todayRatingCount(user.id) >= 30) return c.json(null)
 
+  // 学生只抽自己也交过的题（和同学作品一样，没交过的题不能看别人的答案）
   const cond = `s.user_id != $me
+      ${user.role === Role.NORMAL ? "AND +s.task_id IN (SELECT task_id FROM submission_submission WHERE user_id = $me)" : ""}
       AND NOT EXISTS (SELECT 1 FROM submission_rating r WHERE r.submission_id = s.id AND r.user_id = $me)
       ${excludeId ? "AND s.id != $exclude" : ""}`
   const params = { me: user.id, ...(excludeId ? { exclude: excludeId } : {}) }
@@ -447,25 +461,18 @@ router.get("/stats/:task_id", (c) => {
     else dist.count_4_plus++
   }
 
-  // 标记统计：该任务所有提交（不按学生过滤）
-  const flagStats = { red: 0, blue: 0, green: 0, yellow: 0 }
-  for (const s of subs) {
-    if (s.flag && s.flag in flagStats) flagStats[s.flag as keyof typeof flagStats]++
+  // 高分作品：每人分数最高的一份（同分取较早的），取前五
+  const best = new Map<number, (typeof subs)[number]>()
+  for (const s of studentSubs) {
+    const cur = best.get(s.user_id)
+    if (s.score > 0 && (!cur || s.score > cur.score || (s.score === cur.score && s.created < cur.created)))
+      best.set(s.user_id, s)
   }
-
-  const topViewed = classname
-    ? all(
-        `SELECT s.id, s.view_count, u.username, u.classname ${SUBMISSION_FROM}
-         WHERE s.task_id = $id AND u.role = 'normal' AND u.classname = $classname
-         ORDER BY s.view_count DESC LIMIT 5`,
-        { id: taskId, classname },
-      )
-    : all(
-        `SELECT s.id, s.view_count, u.username, u.classname ${SUBMISSION_FROM}
-         WHERE s.task_id = $id AND u.role = 'normal'
-         ORDER BY s.view_count DESC LIMIT 5`,
-        { id: taskId },
-      )
+  const studentById = new Map(students.map((s) => [s.id, s]))
+  const topScored = [...best.values()]
+    .sort((a, b) => b.score - a.score || (a.created < b.created ? -1 : 1))
+    .slice(0, 5)
+    .map((s) => ({ ...tag(studentById.get(s.user_id)!), score: s.score, submission_id: uuidOut(s.id) }))
 
   const unrated = students.filter((s) => submittedIds.has(s.id) && !ratedIds.has(s.id))
   return c.json({
@@ -476,14 +483,11 @@ router.get("/stats/:task_id", (c) => {
     unsubmitted_users: students.filter((s) => !submittedIds.has(s.id)).map(tag),
     unrated_users: unrated.map(tag),
     submission_count_distribution: dist,
-    flag_stats: flagStats,
+    present_count: studentSubs.filter((s) => s.flag === "present").length,
     classes,
-    top_viewed: topViewed.map((s) => ({
-      username: s.username,
-      classname: s.classname,
-      view_count: s.view_count,
-      submission_id: uuidOut(s.id),
-    })),
+    top_scored: topScored,
+    // 每人最新一版是怎么问出来的
+    prompts: promptChainStats([...latest.values()].map((s) => s.id)),
   })
 })
 
@@ -548,7 +552,18 @@ router.get("/:id", (c) => {
   const id = uuidParam(c, "id")
   requireView(user, id)
   const s = orNotFound(get(`${SUBMISSION_SELECT} ${SUBMISSION_FROM} WHERE s.id = $id`, { me: user.id, id }))
-  return c.json(submissionOut(s))
+  // 反思只给老师和作者本人看
+  const reflection =
+    isStaff(user) || s.user_id === user.id
+      ? (get<{ content: string }>(`SELECT content FROM submission_reflection WHERE submission_id = $id`, { id })
+          ?.content ?? null)
+      : null
+  const out = { ...submissionOut(s), reflection }
+  // 和同学作品一样：学生给同学打分之前不告诉作者和得分（作品展里的本来就署名）
+  if (!isStaff(user) && s.user_id !== user.id && !out.my_score && !inShowcase(id)) {
+    return c.json({ ...out, userid: null, username: null, score: null })
+  }
+  return c.json(out)
 })
 
 // 增加浏览次数（仅在全屏预览时调用）
@@ -565,6 +580,7 @@ router.put("/:id/score", async (c) => {
   const id = uuidParam(c, "id")
   const { score } = await body(c, z.object({ score: z.number().int().max(5) }))
   if (score <= 0) throw new HttpError(400, "分数不能为零")
+  requireView(user, id)
   const sub = orNotFound(
     get<{ user_id: number; username: string }>(
       `SELECT s.user_id, u.username FROM submission_submission s

server/src/services/classifier.ts

@@ -1,18 +1,32 @@
 import { all, get, run } from "../db"
 import { complete, llmConfigured } from "./llm"
+import { briefOf } from "./prompt"
 
-const CLASSIFY_SYSTEM_PROMPT = `你是一个教育评估专家。根据布鲁姆认知分类学，分析以下学生在前端学习中发送给AI助手的一条提示词，判断该提示词所体现的认知层级。
+// 学生在这里是“指挥 AI 做网页”，看的是这句提问里学生自己想了多少，不是要 AI 做的东西有多大：
+// 把题目要求原样贴过去，功能列得再多也只是照着做（L3）
+const CLASSIFY_SYSTEM_PROMPT = `你是一个教育评估专家。学生在网页制作课上让 AI 生成或修改网页，下面给出题目要求、学生上一轮的提问和这一轮的提问。请按布鲁姆认知分类学，判断“这一轮提问”体现的学生自己的思考层级。
 
-层级定义：
-- L1 记忆：能背诵HTML标签语法（例："帮我写一个按钮"）
-- L2 理解：能解释flex布局原理（例："为什么这里不居中？"）
-- L3 应用：能独立搭建页面结构（例："用flex做导航栏，间距16px"）
-- L4 分析：能定位跨浏览器兼容性bug（例："Safari中margin失效，原因？"）
-- L5 评价：能对比并选择方案（例："对比Grid与Flex方案优劣"）
-- L6 创造：能设计并实现原创交互作品（例："设计夜间/日间切换效果"）
+按下面的顺序判断，命中哪一条就是哪一级：
+1. L1 记忆：没有任何具体要求、解释或问题。只给作品名称、只报结果或只让 AI 修（例："帮我做一个象棋游戏"、"制作一个吃豆人"、"继续"、"预览代码"、"还是没有显示"、"点击开始游戏进不去"、"帮我修复代码bug"）
+2. L2 理解：想弄懂原理、代码或概念（问为什么、是什么意思、怎么做到的），或者用自己的话解释现有代码在做什么（例："为什么点了按钮没反应？"、"grid 和 flex 有什么区别"、"这段 js 里的 setInterval 是干什么的"）
+3. L4 分析：说清在哪个操作、哪个位置出了什么具体问题，或者自己推测原因、指出问题出在哪部分（例："拖动绘制时松开鼠标还在画，是不是没监听 mouseup"、"缩小窗口后网格就不显示了"、"围棋我刚下一颗黑棋就判我赢了"）
+4. L5 评价：明确给出判断理由来评价现有结果，或者比较两种做法再选择；必须有“因为……所以……”“A 比 B 好”这样的理由或比较（例："现在按钮太多，小学生看不懂，改成只留三个主要按钮"、"用 canvas 画比用一堆 div 流畅，改成 canvas"）
+5. L6 创造：在题目要求之外提出自己构思的设计，而且几部分互相配合成一个整体，如原创的主题、玩法、规则或交互（例："改成星空主题：转盘是星座，抽中稀有奖励时流星划过并解锁对应星座的图鉴"）
+6. L3 应用：其余给出具体、可执行要求的，如颜色、风格、布局、要加或要改的功能（例："方块大一点，旁边加一个橡皮擦和清空按钮"、"页面风格可爱，浅粉加浅蓝的渐变"、"加上撤销和保存为图片"）
+
+注意：
+- 只看学生自己想出来的部分。照搬或改写题目要求里的功能清单是 L3，要求写得长、功能多不等于层级高。
+- 只说想要什么风格、加什么功能，没有理由，是 L3 不是 L5；只列很多功能，没有自己的整体构思，是 L3 不是 L6。
+- 只说“没反应”“进不去”“不能玩”“有 bug”，哪怕提到了是哪个按钮，也是 L1；要说出更具体的现象（如“打字速度始终是 0”）或推测原因才是 L4。
+- 说明要改成什么样（如“弧线应该对着中圈”“球门要比禁区小”）是 L3，不是 L4。
+- 整段贴了题目要求或一长串功能清单，不是 L1，是 L3。
+- 结合上一轮看：重复上一轮的提问，层级不高于上一轮。
 
 只返回一个数字（1-6），不要解释。`
 
+const MIN_PROMPT_CHARS = 4
+const PROMPT_CHARS = 1500
+
 const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms))
 
 async function callLlm(content: string): Promise<number | null> {
@@ -23,7 +37,8 @@ async function callLlm(content: string): Promise<number | null> {
         { role: "system", content: CLASSIFY_SYSTEM_PROMPT },
         { role: "user", content },
       ],
-      { maxTokens: 10, timeoutMs: 30_000 },
+      // 只回一个数字，不用思考；关了思考 temperature 才生效，同一句提示词得到同一个层级
+      { thinking: false, maxTokens: 10, temperature: 0, timeoutMs: 30_000 },
     )
     const match = /[1-6]/.exec(text)
     if (!match) {
@@ -37,13 +52,45 @@ async function callLlm(content: string): Promise<number | null> {
   }
 }
 
+function clip(text: string) {
+  return text.length > PROMPT_CHARS ? text.slice(0, PROMPT_CHARS) + "……" : text
+}
+
+// 发给模型的：题目要求、同一对话里上一轮的提问（引导对话只和引导对话比）、这一轮的提问
+function classifyInput(msg: { id: number; content: string; source: string; conversation_id: string; created: string }) {
+  const task = get<{ title: string; content: string }>(
+    `SELECT t.title, t.content FROM prompt_conversation c JOIN task_task t ON t.id = c.task_id WHERE c.id = $conv`,
+    { conv: msg.conversation_id },
+  )
+  const prev = get<{ content: string }>(
+    `SELECT content FROM prompt_message
+     WHERE conversation_id = $conv AND role = 'user' AND source != 'edit'
+       AND (source = 'guidance') = $guidance
+       AND (created < $created OR (created = $created AND id < $id))
+     ORDER BY created DESC, id DESC LIMIT 1`,
+    { conv: msg.conversation_id, guidance: msg.source === "guidance", created: msg.created, id: msg.id },
+  )
+  return [
+    `题目：${task?.title ?? "（未知）"}`,
+    `题目要求：${task ? briefOf(task.content) : "（无）"}`,
+    `上一轮提问：${prev ? clip(prev.content) : "（这是第一轮）"}`,
+    `这一轮提问：${clip(msg.content)}`,
+  ].join("\n\n")
+}
+
 export async function classifyMessage(messageId: number): Promise<number | null> {
-  const msg = get<{ content: string }>(
-    `SELECT content FROM prompt_message WHERE id = $id AND role = 'user' AND source != 'edit'`,
+  const msg = get<{ id: number; content: string; source: string; conversation_id: string; created: string }>(
+    `SELECT id, content, source, conversation_id, created FROM prompt_message
+     WHERE id = $id AND role = 'user' AND source != 'edit'`,
     { id: messageId },
   )
   if (!msg) return null
-  const level = await callLlm(msg.content)
+  // “1”“，”“可以”这类太短，判断不出层级；清掉以前打的标签（--force 重标时）
+  if ([...msg.content.trim()].length < MIN_PROMPT_CHARS) {
+    run(`UPDATE prompt_message SET prompt_level = NULL WHERE id = $id`, { id: messageId })
+    return null
+  }
+  const level = await callLlm(classifyInput(msg))
   if (level !== null) {
     run(`UPDATE prompt_message SET prompt_level = $level WHERE id = $id`, {
       level,

server/src/services/llm.ts

@@ -1,18 +1,29 @@
 import { config } from "../config"
 
-export const SYSTEM_PROMPT = `你是一个网页生成助手。根据用户的需求描述，生成网页代码。
+// AI 回复里的说明是学生唯一会读的文字，用它引导学生想下一步：
+// “我替你定的”指出学生没说、AI 自己拿的主意，学生看了才会说“不要这样，因为……”；“想一想”只问不答
+export const SYSTEM_PROMPT = `你是一个网页生成助手，和学生一起做网页。根据学生的描述生成网页代码。
 
 规则：
-1. 使用一个 \`\`\`html 代码块返回所有代码
+1. 生成或修改网页时，使用一个 \`\`\`html 代码块返回所有代码
 2. HTML 代码只需要 body 内的内容，不需要完整的 HTML 文档结构
 3. CSS 样式写在 <style> 标签内，JavaScript 写在 <script> 标签内，都放在代码块里
-4. 用中文回复，先简要说明你做了什么，然后给出代码
-5. 在已有代码基础上修改时，返回完整的修改后代码，不要只返回片段
-6. 由于任何外部链接都被屏蔽，使用纯 HTML、CSS 和 JS 实现功能，不要依赖外部库
+4. 在已有代码基础上修改时，返回完整的修改后代码，不要只返回片段
+5. 由于任何外部链接都被屏蔽，使用纯 HTML、CSS 和 JS 实现功能，不要依赖外部库
+6. 用中文回复，对学生称“你”。先写说明，再给代码。说明分下面三项，标题照抄，每项一两句话，不要写长：
+   - **做了什么**：这次按学生的要求做了哪些改动
+   - **我替你定的**：学生没说、你自己拿主意的地方，比如配色、布局、规则、数值、文字内容；列 1-3 条，只写在网页上看得到、学生可以要求改的。学生这次已经说清楚、没有需要你拿主意的地方，就省略这一项
+   - **想一想**：问学生一个问题，帮他想清楚下一步想要什么。问他自己的想法或判断（如“……的时候你希望它怎样？”“这两种你觉得哪个更适合……，为什么？”），不要列一串功能让他挑，也不要替他回答
+7. 学生只是在问问题（为什么、是什么意思、怎么做到的），没有要求改网页时，用浅显的话直接回答，不给代码，也不用分三项
+8. 学生只说“不行”“有 bug”“没反应”，没说清哪里不对时，照样尽力修好，并在“想一想”里请他下次说清楚：做了什么操作、想看到什么、实际看到了什么
 
 输出格式示例（必须严格遵守，只用一个代码块）：
 
-好的，我为你创建了一个点击按钮变色的示例。
+**做了什么**：做了一个按钮，点一下会变成红色。
+
+**我替你定的**：按钮放在页面左上角；变色后不会再变回来。
+
+**想一想**：再点一次的时候，你希望它变回原来的颜色，还是换成别的颜色？
 
 \`\`\`html
 <style>
@@ -28,23 +39,36 @@ document.getElementById('btn').onclick = function() {
 </script>
 \`\`\``
 
-export const GUIDANCE_SYSTEM_PROMPT = `你是一个提示词写作教练，帮助学生写出清晰、具体的网页需求描述。
+// 挑战题目要求只当对照清单：学生没说的不替他做，挑一项放进“想一想”问他打算怎么做，
+// 要做成什么样还是学生自己说；整段贴了题目的照做（不拦，拦了只会去用外部 AI）
+export const BRIEF_RULES = `下面是这道题的题目要求。它是对照清单，不是让你照着做——这是课堂练习，题目要求要学生自己一步步提出来，这正是这节课要练的：
+- 只做学生在对话里说了的内容，做出来要能打开、能用。学生说的话里包含了题目要求（比如整段贴了题目），就照着做
+- 题目要求里学生还没提到的功能、规则和细节（如计时方式、对错的颜色、计分、重来按钮），哪怕很常见、顺手就能做，也先不做；也不要照搬题目里的类名、变量名和数据
+- 从学生没提到的要求里挑一项最重要的放进“想一想”，问他打算怎么做（如“题目还要求标出打错的字，你希望打错的时候是什么样子？”）
+- 学生要的和题目要求冲突时，按学生说的做，在“想一想”里提醒他题目是怎么要求的
+- 题目要求都做到了，“想一想”就问他自己的想法，不再提题目`
 
-判断标准——满足以下条件视为"够好"：
-- 有明确主题（例如：登录页、计时器、商品卡片列表）
-- 至少包含以下一项具体描述：颜色/布局/风格、交互行为（按钮点击、动画等）、页面内容（文字、数量、图标）
+// 判断标准和分类器一致：看学生自己想了什么，照搬题目写得再长也不算清楚
+export const GUIDANCE_SYSTEM_PROMPT = `你是一个提示词写作教练。学生在网页制作课上让 AI 生成或修改网页，你帮他把这一次要对 AI 说的话想清楚、说具体。后面会给你题目要求、他之前对 AI 说过的话和 AI 上一次的说明。
+
+判断标准——看学生这一次的话，满足下面一条就算"够好"：
+- 第一次描述作品：除了题目要求，有他自己的想法，至少有一处具体的视觉、交互或内容是他自己定的（如配色风格、玩法规则、页面上放什么）
+- 修改已有网页：说清楚要改哪里、改成什么样；或者说清楚出了什么问题——做了什么操作、想看到什么、实际看到了什么
 
 判断为"不够好"的典型情况：
-- 目标太泛，如"做一个好看的页面"
-- 只有主题，完全没有任何视觉、交互或内容描述
+- 只有作品名称，如"做一个象棋游戏"
+- 照搬或改写题目要求，没有自己的想法——哪怕写得很长、功能很多
+- 只说"不行""有 bug""再好看一点"，没说是哪里、要怎样
 
 规则：
-1. 如果提示词不够好，用 1-2 个启发性问题引导学生补充细节，不要直接给出答案
-2. 如果提示词已经够好，以 [READY] 开头回复，简短夸奖学生并说明可以生成了
-3. 用中文回复，语气鼓励，简洁明了
-4. 使用 Markdown 语法高亮关键词，优先突出 **主题**、**视觉**、**交互**、**内容**、**可以生成** 等重点
-5. 如果回复以 [READY] 开头，[READY] 不要加粗，必须保持原始文本
-6. 不要生成任何代码`
+1. 如果不够好，用 1-2 个启发性问题引导学生补充，问他自己的想法，不要直接给出答案，也不要列一串功能让他挑
+2. 照搬题目要求时，先肯定他读懂了题目，再问题目之外他想让作品有什么不一样
+3. AI 上一次的说明里如果有“我替你定的”，可以问他同不同意这些决定
+4. 如果已经够好，以 [READY] 开头回复，简短说明好在哪里，告诉他可以生成了；他还给了理由（为什么这样改）的，特别夸一下
+5. 用中文回复，语气鼓励，简洁明了
+6. 使用 Markdown 语法高亮关键词，优先突出 **视觉**、**交互**、**内容**、**你的想法**、**可以生成** 等重点
+7. 如果回复以 [READY] 开头，[READY] 不要加粗，必须保持原始文本
+8. 不要生成任何代码`
 
 // 走火山方舟（ARK）接口的模型
 const ARK_MODELS = new Set(["doubao-seed-2-1-lite-260915"])
@@ -59,10 +83,14 @@ export interface ChatMessage {
   content: string
 }
 
+// DeepSeek（deepseek-flash）默认先思考再回答，思考的内容在 reasoning_content 里，也算输出 token；
+// 思考模式下 temperature 不起作用。thinking 只发给 DeepSeek，豆包不传
 interface CompletionOptions {
   model?: string
   stream: boolean
+  thinking?: boolean
   maxTokens?: number
+  temperature?: number
   signal?: AbortSignal
   timeoutMs?: number
 }
@@ -81,7 +109,9 @@ function buildRequest(messages: ChatMessage[], opts: CompletionOptions) {
     messages,
     stream: opts.stream,
   }
+  if (!ark && opts.thinking !== undefined) body.thinking = { type: opts.thinking ? "enabled" : "disabled" }
   if (opts.maxTokens) body.max_tokens = opts.maxTokens
+  if (opts.temperature !== undefined) body.temperature = opts.temperature
   const apiKey = ark ? config.arkApiKey : config.llmApiKey
   if (!apiKey) throw new Error("未配置模型接口密钥")
   const baseUrl = (ark ? config.arkBaseUrl : config.llmBaseUrl).replace(/\/$/, "")
@@ -107,8 +137,7 @@ async function ensureOk(res: Response) {
 // 读取 OpenAI 兼容接口的 SSE 流，逐段产出文本
 async function* streamCompletion(
   messages: ChatMessage[],
-  model?: string,
-  signal?: AbortSignal,
+  { model, thinking, signal }: { model?: string; thinking?: boolean; signal?: AbortSignal },
 ): AsyncGenerator<string> {
   // 带思考的模型生成整页代码可能超过两分钟，只要一直有数据就不该中断
   const idle = new AbortController()
@@ -123,6 +152,7 @@ async function* streamCompletion(
     const res = await buildRequest(messages, {
       model,
       stream: true,
+      thinking,
       signal: AbortSignal.any(signals),
       timeoutMs: STREAM_MAX_MS,
     })
@@ -139,6 +169,7 @@ async function* streamCompletion(
         if (data === "[DONE]") return true
         const json = JSON.parse(data)
         if (json.error) throw new Error(json.error.message ?? JSON.stringify(json.error))
+        // 思考阶段只有 delta.reasoning_content，不发给学生（它也会重置空闲计时）
         const content = json.choices?.[0]?.delta?.content
         if (content) yield content
       }
@@ -158,14 +189,15 @@ async function* streamCompletion(
   }
 }
 
-// 发给模型的对话上下文：只留最近 20 条；除最后一条 AI 回复外，旧回复里的代码块换成占位文字。
-// 每次回复都是完整代码，模型只需要最新那份；否则对话越长 token 越多，最后会超出上下文长度
+// 发给模型的对话上下文：只留最近 20 条；除最后一条带代码的 AI 回复外，旧回复里的代码块换成占位文字。
+// 每次回复都是完整代码，模型只需要最新那份；否则对话越长 token 越多，最后会超出上下文长度。
+// 只回答问题的回复没有代码，不能拿它当“最后一条”，不然最新的代码也被省略了
 const MAX_HISTORY = 20
 const CODE_BLOCK = /```[\s\S]*?```/g
 
 export function trimHistory(history: ChatMessage[]): ChatMessage[] {
   const recent = history.slice(-MAX_HISTORY)
-  const last = recent.findLastIndex((m) => m.role === "assistant")
+  const last = recent.findLastIndex((m) => m.role === "assistant" && m.content.includes("```"))
   return recent.map((m, i) =>
     m.role === "assistant" && i !== last
       ? { ...m, content: m.content.replace(CODE_BLOCK, "```\n（旧版本代码已省略）\n```") }
@@ -185,30 +217,34 @@ export function userFacingError(e: unknown) {
   return status ? `AI 服务出错（${status}），请稍后重试` : "AI 服务出错，请稍后重试"
 }
 
-export function streamChat(history: ChatMessage[], model?: string, signal?: AbortSignal) {
-  return streamCompletion(
-    [{ role: "system", content: SYSTEM_PROMPT }, ...trimHistory(history)],
-    chatModel(model),
+// 生成整页代码：开着思考，质量优先。brief 是挑战的题目要求（见 challengeBrief），自由创作没有
+export function streamChat(history: ChatMessage[], model?: string, signal?: AbortSignal, brief?: string | null) {
+  const system = brief ? `${SYSTEM_PROMPT}\n\n${BRIEF_RULES}\n\n${brief}` : SYSTEM_PROMPT
+  return streamCompletion([{ role: "system", content: system }, ...trimHistory(history)], {
+    model: chatModel(model),
+    thinking: true,
     signal,
-  )
+  })
 }
 
-export function streamGuidance(history: ChatMessage[], signal?: AbortSignal) {
-  return streamCompletion(
-    [{ role: "system", content: GUIDANCE_SYSTEM_PROMPT }, ...history],
-    undefined,
+// 引导只是简短追问，不用思考，回得快。context 是题目和学生之前的对话（见 guidanceContext）
+export function streamGuidance(history: ChatMessage[], context: string, signal?: AbortSignal) {
+  return streamCompletion([{ role: "system", content: `${GUIDANCE_SYSTEM_PROMPT}\n\n${context}` }, ...history], {
+    thinking: false,
     signal,
-  )
+  })
 }
 
 export async function complete(
   messages: ChatMessage[],
-  opts: { model?: string; maxTokens?: number; timeoutMs?: number } = {},
+  opts: { model?: string; thinking?: boolean; maxTokens?: number; temperature?: number; timeoutMs?: number } = {},
 ): Promise<string> {
   const res = await buildRequest(messages, {
     model: opts.model ?? config.llmModel,
     stream: false,
+    thinking: opts.thinking,
     maxTokens: opts.maxTokens,
+    temperature: opts.temperature,
     timeoutMs: opts.timeoutMs,
   })
   await ensureOk(res)

server/src/services/prompt.ts

@@ -1,5 +1,6 @@
 import { all, get, run, now, newUuidHex } from "../db"
 import { Role, type User } from "../auth"
+import { pyRound } from "./pyround"
 
 export interface MessageRow {
   id: number
@@ -98,6 +99,62 @@ export function codeAsMarkdown(code: {
   return "```html\n" + parts.join("\n\n") + "\n```"
 }
 
+// 题目要求去掉图片、压成一段，太长的截掉
+const BRIEF_CHARS = 800
+
+export function briefOf(content: string, max = BRIEF_CHARS) {
+  const text = content
+    .replace(/!\[[^\]]*\]\([^)]*\)/g, "")
+    .replace(/\s+/g, " ")
+    .trim()
+  return clipTo(text, max)
+}
+
+function clipTo(text: string, n: number) {
+  return text.length > n ? text.slice(0, n) + "……" : text
+}
+
+// 挑战的题目要求，给生成网页的 AI 当对照清单（见 llm.ts 的 BRIEF_RULES）；要逐条对照，不能截得太短。
+// 自由创作的题目是学生自己写的介绍，不用对照，返回 null
+export function challengeBrief(taskId: number) {
+  const task = get<{ title: string; content: string }>(
+    `SELECT title, content FROM task_task WHERE id = $id AND task_type = 'challenge'`,
+    { id: taskId },
+  )
+  const brief = task && briefOf(task.content, 4000)
+  return brief ? `题目：${task.title}\n\n题目要求：${brief}` : null
+}
+
+// “帮我写清楚”的教练要知道题目和学生已经做到哪了，才分得清照搬题目和自己的想法：
+// 题目要求、学生最近几次对 AI 说的话、AI 上一次的说明（代码去掉）
+export function guidanceContext(conversationId: string, taskId: number) {
+  const task = get<{ title: string; content: string }>(
+    `SELECT title, content FROM task_task WHERE id = $id`,
+    { id: taskId },
+  )
+  const asked = all<{ content: string }>(
+    `SELECT content FROM prompt_message
+     WHERE conversation_id = $id AND role = 'user' AND source IN ('conversation', 'manual')
+     ORDER BY created DESC, id DESC LIMIT 5`,
+    { id: conversationId },
+  ).reverse()
+  const reply = get<{ content: string }>(
+    `SELECT content FROM prompt_message
+     WHERE conversation_id = $id AND role = 'assistant' AND source = 'conversation'
+     ORDER BY created DESC, id DESC LIMIT 1`,
+    { id: conversationId },
+  )
+  const replyText = reply?.content.replace(/```[\s\S]*?(```|$)/g, "").trim()
+  return [
+    `题目：${task?.title ?? "（未知）"}`,
+    `题目要求：${task ? briefOf(task.content) || "（无）" : "（无）"}`,
+    `学生之前对 AI 说过的话：${
+      asked.length ? asked.map((m, i) => `\n${i + 1}. ${clipTo(m.content.trim(), 300)}`).join("") : "（还没有，这是第一次描述作品）"
+    }`,
+    `AI 上一次的说明：${replyText ? clipTo(replyText, 600) : "（无）"}`,
+  ].join("\n\n")
+}
+
 export function getPrecedingUserMessage(asst: Pick<MessageRow, "id" | "conversation_id" | "created">) {
   return get<MessageRow>(
     `SELECT * FROM prompt_message
@@ -141,3 +198,38 @@ export function buildPromptRounds(source: MessageRow) {
   }
   return rounds
 }
+
+// 课堂总结：这些提交各自是怎么问出来的（只走覆盖索引，不读提问和代码）
+export function promptChainStats(submissionIds: string[]) {
+  type Slim = { conversation_id: string; created: string; id: number; role: string; source: string; prompt_level: number | null }
+  const finals = all<Omit<Slim, "role" | "prompt_level">>(
+    `SELECT conversation_id, created, id, source FROM prompt_message
+     WHERE submission_id IN (SELECT value FROM json_each($ids))`,
+    { ids: JSON.stringify(submissionIds) },
+  )
+  const byConv = new Map<string, Slim[]>()
+  const msgs = all<Slim>(
+    `SELECT conversation_id, created, id, role, source, prompt_level FROM prompt_message
+     WHERE conversation_id IN (SELECT value FROM json_each($convs))`,
+    { convs: JSON.stringify([...new Set(finals.map((f) => f.conversation_id))]) },
+  )
+  for (const m of msgs) byConv.set(m.conversation_id, [...(byConv.get(m.conversation_id) ?? []), m])
+
+  const out = { with_chain: finals.length, one_round: 0, external: 0, used_guidance: 0, avg_rounds: 0 }
+  const levels = [0, 0, 0, 0, 0, 0]
+  let rounds = 0
+  for (const f of finals) {
+    // 和 buildPromptRounds 一样：只算交的那一版之前的提问
+    const asked = (byConv.get(f.conversation_id) ?? []).filter(
+      (m) => m.role === "user" && (m.created < f.created || (m.created === f.created && m.id < f.id)),
+    )
+    const code = asked.filter((m) => m.source !== "guidance")
+    rounds += code.length
+    if (code.length === 1) out.one_round++
+    if (f.source === "manual") out.external++
+    if (code.length < asked.length) out.used_guidance++
+    for (const m of code) if (m.prompt_level) levels[m.prompt_level - 1]!++
+  }
+  out.avg_rounds = finals.length ? pyRound(rounds / finals.length, 1) : 0
+  return { ...out, levels }
+}

server/src/ws.ts

@@ -3,8 +3,10 @@ import { all, get, run, iso, uuidOut } from "./db"
 import { userFromAccessToken, type User } from "./auth"
 import {
   canAccessTask,
+  challengeBrief,
   codeAsMarkdown,
   getOrCreateActiveConversation,
+  guidanceContext,
   insertMessage,
 } from "./services/prompt"
 import {
@@ -15,6 +17,7 @@ import {
   userFacingError,
   type ChatMessage,
 } from "./services/llm"
+import { classifyMessage, inBackground } from "./services/classifier"
 
 type Kind = "prompt" | "guidance"
 
@@ -116,11 +119,12 @@ async function handlePrompt(ws: WS, data: any) {
   const model = String(data.model ?? "")
   if (!prompt) return
 
-  ws.data.pendingUserMessageId = insertMessage({
+  const userMessageId = insertMessage({
     conversation_id: ws.data.conversationId,
     role: "user",
     content: prompt,
   })
+  ws.data.pendingUserMessageId = userMessageId
   try {
     const history: ChatMessage[] = conversationHistory(ws.data.conversationId).map((m) => ({
       role: m.role as ChatMessage["role"],
@@ -129,7 +133,8 @@ async function handlePrompt(ws: WS, data: any) {
     }))
     let full: string
     try {
-      full = await streamToClient(ws, streamChat(history, model, ws.data.abort.signal))
+      const brief = challengeBrief(ws.data.taskId)
+      full = await streamToClient(ws, streamChat(history, model, ws.data.abort.signal, brief))
     } catch (e) {
       // 客户端自己断开导致的中止不算出错
       if (!ws.data.closed) send(ws, { type: "error", content: userFacingError(e) })
@@ -146,8 +151,12 @@ async function handlePrompt(ws: WS, data: any) {
       code_css: code.css,
       code_js: code.js,
     })
+    // 有了回复，这条提问才留下来；在后台打 L1–L6 层级
+    inBackground(classifyMessage(userMessageId))
     ws.data.pendingUserMessageId = null
-    send(ws, { type: "complete", code, message_id: messageId })
+    // 只回答问题、没给代码的回复不是新版本；发 null，免得工作台把网页清空
+    const hasCode = !!(code.html || code.css || code.js)
+    send(ws, { type: "complete", code: hasCode ? code : null, message_id: messageId })
   } finally {
     dropPendingUserMessage(ws)
   }
@@ -157,17 +166,22 @@ async function handleGuidance(ws: WS, data: any) {
   const prompt = String(data.content ?? "").trim()
   if (!prompt) return
 
-  ws.data.pendingUserMessageId = insertMessage({
+  const userMessageId = insertMessage({
     conversation_id: ws.data.conversationId,
     role: "user",
     content: prompt,
     source: "guidance",
   })
+  ws.data.pendingUserMessageId = userMessageId
   ws.data.guidanceHistory.push({ role: "user", content: prompt })
   try {
     let full: string
     try {
-      full = await streamToClient(ws, streamGuidance(ws.data.guidanceHistory, ws.data.abort.signal))
+      const context = guidanceContext(ws.data.conversationId, ws.data.taskId)
+      full = await streamToClient(
+        ws,
+        streamGuidance(ws.data.guidanceHistory, context, ws.data.abort.signal),
+      )
     } catch (e) {
       // 这条提问没有回复，留在上下文里会出现连续两条用户消息
       ws.data.guidanceHistory.pop()
@@ -185,6 +199,7 @@ async function handleGuidance(ws: WS, data: any) {
       content: clean,
       source: "guidance",
     })
+    inBackground(classifyMessage(userMessageId))
     ws.data.pendingUserMessageId = null
     send(ws, { type: "complete", message_id: messageId, is_ready: isReady })
   } finally {

server/tests/api.test.ts

@@ -1,5 +1,5 @@
 import { beforeEach, describe, expect, test } from "bun:test"
-import { get, all } from "../src/db"
+import { get, all, run } from "../src/db"
 import { app } from "../src/app"
 import { config } from "../src/config"
 import { mkdtemp, readFile, readdir, rm } from "node:fs/promises"
@@ -171,6 +171,8 @@ describe("评分", () => {
     expect(row.score).toBeCloseTo(4.25)
     expect(row.zone).toBe("pending")
 
+    // 学生要自己也交过这道题才能打分
+    for (let i = 0; i < 3; i++) makeSubmission(get(`SELECT id FROM account_user WHERE username = 's${i}'`).id, task)
     for (let i = 0; i < 3; i++) {
       await (await client(`s${i}`))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 5 })
     }
@@ -256,8 +258,9 @@ describe("提交与删除", () => {
 
   test("删除一轮对话：连带提问和关联提交；被评过分的不能删", async () => {
     makeUser("stu")
-    makeUser("other")
+    const other = makeUser("other")
     const task = makeTask("T")
+    const otherSub = makeSubmission(other, task)
     const stu = await client("stu")
     const first = await stu("POST", "/api/submission/", { task_id: task, html: "<p>1", prompt: "第一版" })
     const second = await stu("POST", "/api/submission/", { task_id: task, html: "<p>2", prompt: "第二版" })
@@ -270,14 +273,44 @@ describe("提交与删除", () => {
     const res = await stu("DELETE", `/api/prompt/messages/${asstOf(first.json.id)}/pair`)
     expect(res.json).toEqual({ deleted: true, submission_deleted: true })
     expect(all(`SELECT content FROM prompt_message WHERE role = 'user'`)).toEqual([{ content: "第二版" }])
-    expect(all(`SELECT COUNT(*) AS n FROM submission_submission`)).toEqual([{ n: 1 }])
+    expect(all(`SELECT COUNT(*) AS n FROM submission_submission WHERE id != $id`, { id: otherSub })).toEqual([{ n: 1 }])
+  })
+
+  test("交的时候写的反思：再交没写就保留，只有老师和作者能看，删提交时一起删", async () => {
+    makeUser("stu")
+    makeUser("mate")
+    makeUser("teacher", "admin")
+    const task = makeTask("T")
+    const stu = await client("stu")
+    const edit = await stu("POST", "/api/prompt/versions", { task_id: task, html: "<p>1", css: "", js: "" })
+    const sub = await stu("POST", "/api/submission/", {
+      task_id: task,
+      html: "<p>1",
+      message_id: edit.json.message_id,
+      reflection: "  按钮改成三个，因为五个太乱  ",
+    })
+    const id = sub.json.id
+    await stu("POST", "/api/submission/", { task_id: task, html: "<p>1!", message_id: edit.json.message_id, reflection: "" })
+    expect((await stu("GET", `/api/submission/${id}`)).json.reflection).toBe("按钮改成三个，因为五个太乱")
+    expect((await (await client("teacher"))("GET", `/api/submission/${id}`)).json.reflection).toBe("按钮改成三个，因为五个太乱")
+
+    const mate = await client("mate")
+    await mate("POST", "/api/submission/", { task_id: task, html: "<p>m" })
+    const peer = await mate("GET", `/api/submission/${id}`)
+    expect(peer.status).toBe(200)
+    expect(peer.json.reflection).toBeNull()
+
+    expect((await stu("DELETE", `/api/submission/${id}`)).status).toBe(200)
+    expect(all(`SELECT * FROM submission_reflection`)).toEqual([])
   })
 
   test("被评分的提交只有超管能删", async () => {
     const author = makeUser("author")
-    makeUser("other")
+    const other = makeUser("other")
     makeUser("boss", "super")
-    const sub = makeSubmission(author, makeTask("T"))
+    const task = makeTask("T")
+    const sub = makeSubmission(author, task)
+    makeSubmission(other, task)
     await (await client("other"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 4 })
     expect((await (await client("author"))("DELETE", `/api/submission/${uuid(sub)}`)).status).toBe(400)
     expect((await (await client("boss"))("DELETE", `/api/submission/${uuid(sub)}`)).status).toBe(200)
@@ -410,7 +443,7 @@ describe("作品展", () => {
 
     const author1 = await client("author")
     expect((await author1("GET", "/api/submission/showcase/")).json).toHaveLength(1)
-    expect((await author1("GET", `/api/submission/showcase/${uuid(sub)}/`)).json.awards).toEqual(["最佳"])
+    expect((await author1("GET", `/api/submission/showcase/${uuid(sub)}/`)).json).toMatchObject({ awards: ["最佳"], task_type: "challenge" })
 
     await adm("PUT", `/api/submission/showcase/manage/awards/${award.id}`, { name: "最佳", is_active: false })
     expect((await author1("GET", "/api/submission/showcase/")).json).toEqual([])
@@ -495,7 +528,7 @@ describe("任务素材", () => {
 })
 
 describe("同学作品与批改", () => {
-  test("学生只能看自己的、作品展里的、本班同学在自己也交过的题上的提交", async () => {
+  test("学生只能看自己的、作品展里的、自己也交过的题上同学（任何班）的提交", async () => {
     const me = makeUser("me", "normal", "c1")
     const mate = makeUser("mate", "normal", "c1")
     const other = makeUser("other", "normal", "c2")
@@ -509,10 +542,18 @@ describe("同学作品与批改", () => {
     const locked = await stu("GET", `/api/submission/review/peers/${task}`)
     expect(locked.json).toEqual({ locked: true, items: [] })
 
-    makeSubmission(me, task)
-    expect((await stu("GET", `/api/submission/${uuid(mateSub)}`)).status).toBe(200)
-    // 外班的仍然看不到
     expect((await stu("GET", `/api/submission/${uuid(otherSub)}`)).status).toBe(403)
+    makeSubmission(me, task)
+    const peer = await stu("GET", `/api/submission/${uuid(mateSub)}`)
+    expect(peer.status).toBe(200)
+    // 打分前不显示作者和得分
+    expect(peer.json).toMatchObject({ userid: null, username: null, score: null })
+    // 交过以后外班的也能看
+    expect((await stu("GET", `/api/submission/${uuid(otherSub)}`)).status).toBe(200)
+    // 没交过的题仍然看不到
+    const otherTask = makeTask("T2", "challenge", 2)
+    const otherTaskSub = makeSubmission(mate, otherTask)
+    expect((await stu("GET", `/api/submission/${uuid(otherTaskSub)}`)).status).toBe(403)
     // 列表里只有自己的
     const list = await stu("GET", "/api/submission/")
     expect(list.json.items.map((s: any) => s.username)).toEqual(["me"])
@@ -528,6 +569,11 @@ describe("同学作品与批改", () => {
     const mateSub = makeSubmission(mate, task)
     const stu = await client("me")
 
+    // 没交过的同学既不能打分，也抽不到这道题
+    const other = await client("other")
+    expect((await other("PUT", `/api/submission/${uuid(mateSub)}/score`, { score: 3 })).status).toBe(403)
+    expect((await other("GET", "/api/submission/random-for-rating")).json).toBeNull()
+
     let peers = await stu("GET", `/api/submission/review/peers/${task}`)
     expect(peers.json.items).toHaveLength(1)
     expect(peers.json.items[0]).toMatchObject({ id: uuid(mateSub), username: null, score: null, my_score: 0 })
@@ -536,9 +582,24 @@ describe("同学作品与批改", () => {
     expect(rated.json.username).toBe("mate")
     peers = await stu("GET", `/api/submission/review/peers/${task}`)
     expect(peers.json.items[0]).toMatchObject({ username: "mate", my_score: 4 })
+    expect((await stu("GET", `/api/submission/${uuid(mateSub)}`)).json).toMatchObject({ username: "mate" })
 
-    const random = await (await client("other"))("GET", "/api/submission/random-for-rating")
+    // 默认只看本班；scope=all 能看到外班，标着班级，同样匿名
+    const otherSub = makeSubmission(get(`SELECT id FROM account_user WHERE username = 'other'`).id, task)
+    const random = await other("GET", "/api/submission/random-for-rating")
+    expect(random.json.submission_id).toBeDefined()
     expect(random.json.username).toBeUndefined()
+    const all = await stu("GET", `/api/submission/review/peers/${task}?scope=all`)
+    expect(all.json.items.map((w: any) => [w.classname, w.username])).toContainEqual(["c2", null])
+    expect(all.json.items.map((w: any) => w.id)).toContain(uuid(otherSub))
+    const mine = await stu("GET", `/api/submission/review/peers/${task}`)
+    expect(mine.json.items.map((w: any) => w.classname)).toEqual(["c1"])
+
+    // 老师没交过也能看，直接显示作者
+    makeUser("t", "admin")
+    const teacher = await (await client("t"))("GET", `/api/submission/review/peers/${task}`)
+    expect(teacher.json.locked).toBe(false)
+    expect(teacher.json.items.map((w: any) => w.username).sort()).toEqual(["mate", "me", "other"])
   })
 
   test("老师按班级 × 任务看作品墙；课上展示用 flag", async () => {
@@ -558,9 +619,104 @@ describe("同学作品与批改", () => {
     ])
     const progress = await teacher("GET", "/api/submission/review/progress?classname=c1")
     expect(progress.json).toEqual({ student_count: 2, submitted: { [task]: 1 } })
+
+    // 不传班级：所有班的学生都在，带着班级
+    const other = makeUser("z", "normal", "c2")
+    makeSubmission(other, task)
+    const allWall = await teacher("GET", `/api/submission/review/class?task_id=${task}`)
+    expect(allWall.json.map((s: any) => [s.classname, s.username])).toEqual([
+      ["c1", "a"],
+      ["c1", "b"],
+      ["c2", "z"],
+    ])
+    const allProgress = await teacher("GET", "/api/submission/review/progress")
+    expect(allProgress.json).toEqual({ student_count: 3, submitted: { [task]: 2 } })
     const options = await teacher("GET", "/api/submission/review/options")
-    expect(options.json.classes).toEqual(["c1"])
+    expect(options.json.classes).toEqual(["c1", "c2"])
 
     expect((await teacher("PUT", `/api/submission/${uuid(latest)}/flag`, { flag: "present" })).json.flag).toBe("present")
   })
 })
+
+describe("课堂总结", () => {
+  test("按班级统计，高分作品每人只取最高的一份", async () => {
+    makeUser("adm", "admin")
+    const task = makeTask("挑战", "challenge", 1)
+    const a = makeUser("weba1小明", "normal", "a1")
+    const b = makeUser("weba1小红", "normal", "a1")
+    makeUser("weba1小刚", "normal", "a1")
+    const other = makeUser("weba2小李", "normal", "a2")
+    makeSubmission(a, task, 3, "2026-01-01 00:00:00.000000")
+    const aBest = makeSubmission(a, task, 4.5, "2026-01-02 00:00:00.000000")
+    makeSubmission(a, task, 4, "2026-01-03 00:00:00.000000")
+    const bSub = makeSubmission(b, task, 0)
+    run(`UPDATE submission_submission SET flag = 'present' WHERE id = $id`, { id: bSub })
+    makeSubmission(other, task, 5)
+
+    const adm = await client("adm")
+    const res = await adm("GET", `/api/submission/stats/${task}?classname=a1`)
+    expect(res.status).toBe(200)
+    expect(res.json).toMatchObject({
+      submitted_count: 2,
+      unsubmitted_count: 1,
+      average_score: 4,
+      unrated_count: 2,
+      present_count: 1,
+      classes: ["a1", "a2"],
+      submission_count_distribution: { count_1: 1, count_2: 0, count_3: 1, count_4_plus: 0 },
+    })
+    expect(res.json.unsubmitted_users).toEqual([{ username: "weba1小刚", classname: "a1" }])
+    expect(res.json.top_scored).toEqual([
+      { username: "weba1小明", classname: "a1", score: 4.5, submission_id: uuid(aBest) },
+    ])
+
+    const all = await adm("GET", `/api/submission/stats/${task}`)
+    expect(all.json.top_scored.map((t: any) => t.username)).toEqual(["weba2小李", "weba1小明"])
+  })
+
+  test("统计每人最新一版的提示词链", async () => {
+    const { createConversation, insertMessage } = await import("../src/services/prompt")
+    makeUser("adm", "admin")
+    const task = makeTask("挑战")
+    const say = (conv: string, source: string, level: number | null, submission_id?: string) => {
+      const id = insertMessage({ conversation_id: conv, role: "user", source, content: "提问" })
+      run(`UPDATE prompt_message SET prompt_level = $level WHERE id = $id`, { level, id })
+      insertMessage({ conversation_id: conv, role: "assistant", source, content: "回答", submission_id })
+    }
+    // 小明：AI 对话 → 引导 → 外部 AI，交最后这版；交了之后的提问不算
+    const a = makeUser("weba1小明", "normal", "a1")
+    const convA = createConversation(a, task)
+    say(convA, "conversation", 3)
+    say(convA, "guidance", 2)
+    say(convA, "manual", 6, makeSubmission(a, task))
+    say(convA, "conversation", 1)
+    // 小红：一轮就交
+    const b = makeUser("weba1小红", "normal", "a1")
+    say(createConversation(b, task), "conversation", 1, makeSubmission(b, task))
+    // 小刚：手动交的，没有提示词
+    makeSubmission(makeUser("weba1小刚", "normal", "a1"), task)
+
+    const res = await (await client("adm"))("GET", `/api/submission/stats/${task}`)
+    expect(res.json.prompts).toEqual({
+      with_chain: 2,
+      one_round: 1,
+      external: 1,
+      used_guidance: 1,
+      avg_rounds: 1.5,
+      levels: [1, 0, 1, 0, 0, 1],
+    })
+  })
+})
+
+describe("提示词分类", () => {
+  test("太短的提问不打层级，以前打的也清掉", async () => {
+    const { classifyMessage } = await import("../src/services/classifier")
+    const { createConversation, insertMessage } = await import("../src/services/prompt")
+    const conv = createConversation(makeUser("stu"), makeTask("T"))
+    const id = insertMessage({ conversation_id: conv, role: "user", content: " 1 " })
+    run(`UPDATE prompt_message SET prompt_level = 6 WHERE id = $id`, { id })
+    expect(await classifyMessage(id)).toBeNull()
+    const row = get<{ prompt_level: number | null }>(`SELECT prompt_level FROM prompt_message WHERE id = $id`, { id })
+    expect(row!.prompt_level).toBeNull()
+  })
+})

server/tests/unit.test.ts

@@ -5,6 +5,7 @@ import {
   extractCode,
   parseGuidanceResponse,
   streamChat,
+  streamGuidance,
   trimHistory,
   userFacingError,
 } from "../src/services/llm"
@@ -77,12 +78,13 @@ test("CSV 转义", () => {
 })
 
 describe("streamChat", () => {
-  test("不认识的模型换成默认模型，最后一行没有换行也能读到", async () => {
+  test("不认识的模型换成默认模型，最后一行没有换行也能读到；生成代码开思考，引导不开", async () => {
     let model = ""
+    let thinking: unknown
     const server = Bun.serve({
       port: 0,
       async fetch(req) {
-        model = ((await req.json()) as any).model
+        ;({ model, thinking } = (await req.json()) as any)
         const line = (s: string) => `data: ${JSON.stringify({ choices: [{ delta: { content: s } }] })}`
         // 一行拆在两个分块之间，最后一行不带换行
         const body = `${line("你好")}\n\n${line("世")}\n${line("界")}`
@@ -108,6 +110,9 @@ describe("streamChat", () => {
       for await (const s of streamChat([{ role: "user", content: "hi" }], "deepseek-v4-flash-thinking")) out += s
       expect(out).toBe("你好世界")
       expect(model).toBe(config.llmModel)
+      expect(thinking).toEqual({ type: "enabled" })
+      for await (const _ of streamGuidance([{ role: "user", content: "hi" }], "题目：x"));
+      expect(thinking).toEqual({ type: "disabled" })
     } finally {
       Object.assign(config, saved)
       server.stop(true)
@@ -135,6 +140,19 @@ test("trimHistory 只留最近 20 条，旧回复的代码换成占位", () => {
   expect(out.filter((m) => m.content.includes("<p>"))).toHaveLength(1)
 })
 
+test("trimHistory 最后一条回复没有代码时，保留之前最新的那份代码", () => {
+  const out = trimHistory([
+    { role: "user", content: "做个页面" },
+    { role: "assistant", content: "第1版\n```html\n<p>1</p>\n```" },
+    { role: "user", content: "加个按钮" },
+    { role: "assistant", content: "第2版\n```html\n<p>2</p>\n```" },
+    { role: "user", content: "为什么按钮是圆的？" },
+    { role: "assistant", content: "因为加了 border-radius。" },
+  ])
+  expect(out[3]!.content).toContain("<p>2</p>")
+  expect(out[1]!.content).not.toContain("<p>1</p>")
+})
+
 test("userFacingError 不透出接口原始返回", () => {
   const quiet = console.error
   console.error = () => {}

server/tests/ws.test.ts

@@ -2,18 +2,25 @@ import { afterAll, beforeAll, beforeEach, describe, expect, test } from "bun:tes
 import type { Server } from "bun"
 import { app } from "../src/app"
 import { config } from "../src/config"
-import { all } from "../src/db"
+import { all, run } from "../src/db"
 import { upgrade, websocket, type WsData } from "../src/ws"
 import { client, freshDb, makeTask, makeUser } from "./helpers"
 
 // 假的模型接口：每段之间停一下，方便测试中途断开
-const PIECES = ["好的", "```html\n<p>hi</p>\n```"]
-// 最近一次发给模型的请求
+const DEFAULT_PIECES = ["好的", "```html\n<p>hi</p>\n```"]
+let PIECES = DEFAULT_PIECES
+// 最近一次发给模型的请求；分类（非流式）单独记，固定回“3”
 let lastRequest: any = null
+let lastClassify: any = null
 const llm = Bun.serve({
   port: 0,
   async fetch(req) {
-    lastRequest = await req.json()
+    const body: any = await req.json()
+    if (!body.stream) {
+      lastClassify = body
+      return Response.json({ choices: [{ message: { content: "3" } }] })
+    }
+    lastRequest = body
     const enc = new TextEncoder()
     const stream = new ReadableStream({
       async start(ctrl) {
@@ -50,7 +57,10 @@ afterAll(() => {
   llm.stop(true)
 })
 
-beforeEach(freshDb)
+beforeEach(() => {
+  freshDb()
+  PIECES = DEFAULT_PIECES
+})
 
 interface Conn {
   ws: WebSocket
@@ -106,6 +116,19 @@ describe("WebSocket 代码生成", () => {
     c.ws.close()
   })
 
+  test("回复完后在后台给提问打层级", async () => {
+    const { task, token } = await setup()
+    const c = (await connect(`/ws/prompt/${task}/?token=${token}`))!
+    await c.next("init")
+    c.ws.send(JSON.stringify({ type: "message", content: "做个页面" }))
+    await c.next("complete")
+    const level = () => all(`SELECT prompt_level FROM prompt_message WHERE role = 'user'`)[0]?.prompt_level
+    for (let i = 0; i < 50 && level() == null; i++) await Bun.sleep(20)
+    expect(level()).toBe(3)
+    expect(lastClassify.thinking).toEqual({ type: "disabled" })
+    c.ws.close()
+  })
+
   test("AI 回复中再发消息会被拒绝", async () => {
     const { task, token } = await setup()
     const c = (await connect(`/ws/prompt/${task}/?token=${token}`))!
@@ -157,9 +180,70 @@ describe("WebSocket 代码生成", () => {
     c.ws.close()
   })
 
+  test("只回答问题、没给代码时 code 是 null", async () => {
+    const { task, token } = await setup()
+    PIECES = ["因为加了 ", "border-radius。"]
+    const c = (await connect(`/ws/prompt/${task}/?token=${token}`))!
+    await c.next("init")
+    c.ws.send(JSON.stringify({ type: "message", content: "为什么按钮是圆的？" }))
+    const done = await c.next("complete")
+    expect(done.code).toBeNull()
+    expect(done.message_id).toBeGreaterThan(0)
+    c.ws.close()
+  })
+
+  test("挑战的题目要求作为对照清单发给 AI，自由创作不发", async () => {
+    const { task, token } = await setup()
+    run(`UPDATE task_task SET content = $c WHERE id = $id`, { c: "做一个计时器，有开始和暂停按钮", id: task })
+    const c = (await connect(`/ws/prompt/${task}/?token=${token}`))!
+    await c.next("init")
+    c.ws.send(JSON.stringify({ type: "message", content: "做个页面" }))
+    await c.next("complete")
+    expect(lastRequest.messages[0].content).toContain("它是对照清单")
+    expect(lastRequest.messages[0].content).toContain("题目要求：做一个计时器，有开始和暂停按钮")
+    c.ws.close()
+
+    const creation = makeTask("我的作品", "creation", 2)
+    run(`UPDATE task_task SET content = '我想做一个相册' WHERE id = $id`, { id: creation })
+    const d = (await connect(`/ws/prompt/${creation}/?token=${token}`))!
+    await d.next("init")
+    d.ws.send(JSON.stringify({ type: "message", content: "做个页面" }))
+    await d.next("complete")
+    expect(lastRequest.messages[0].content).not.toContain("题目要求")
+    d.ws.close()
+  })
+
   test("token 无效或任务不存在时握手失败", async () => {
     const { task, token } = await setup()
     expect(await connect(`/ws/prompt/${task}/?token=bad`)).toBeNull()
     expect(await connect(`/ws/prompt/9999/?token=${token}`)).toBeNull()
   })
 })
+
+describe("WebSocket 帮我写清楚", () => {
+  test("教练能看到题目要求、之前的提问和 AI 上一次的说明", async () => {
+    const { task, token } = await setup()
+    run(`UPDATE task_task SET content = $c WHERE id = $id`, { c: "做一个计时器，![图](a.png) 有开始和暂停按钮", id: task })
+    const p = (await connect(`/ws/prompt/${task}/?token=${token}`))!
+    await p.next("init")
+    p.ws.send(JSON.stringify({ type: "message", content: "做个计时器" }))
+    await p.next("complete")
+    p.ws.close()
+
+    const g = (await connect(`/ws/guidance/${task}/?token=${token}`))!
+    await g.next("init")
+    g.ws.send(JSON.stringify({ type: "message", content: "改成粉色" }))
+    await g.next("complete")
+    const system = lastRequest.messages[0]
+    expect(system.role).toBe("system")
+    expect(system.content).toContain("题目要求：做一个计时器， 有开始和暂停按钮")
+    expect(system.content).toContain("1. 做个计时器")
+    expect(system.content).toContain("AI 上一次的说明：好的")
+    expect(system.content).not.toContain("<p>hi</p>")
+    expect(lastRequest.messages.at(-1)).toEqual({ role: "user", content: "改成粉色" })
+    // 等后台打完层级再结束，不然假接口关了它会报错
+    const level = () => all(`SELECT prompt_level FROM prompt_message WHERE source = 'guidance' AND role = 'user'`)[0]?.prompt_level
+    for (let i = 0; i < 50 && level() == null; i++) await Bun.sleep(20)
+    g.ws.close()
+  })
+})