feat: 改版阶段 4：挑战列表页、教程按小节存代码、出题页合并、用户管理、整站暗色

- 挑战列表改成独立页面（ChallengeHome）：每题一行，完成状态、分值、出题人，可按未做 / 已交筛选；教程面板只放教程 - 教程每一节的代码各存一份（和挑战同一个按任务的 key），切回来时还在，第一次才放示例代码；提交列表“复制到编辑器”对教程也写入该任务的代码 - 教程 / 挑战出题页合并为 TaskEditor：“提交”改为“保存”，保存后停在当前项，删除前说明会连带删除学生提交； admin 也能在列表里切换挑战是否公开（保存时本来就能设） - 用户管理：初始密码默认隐藏，封号前确认，批量新建说明用户名规则 - 整站暗色：顶栏切换跟随系统 / 亮色 / 暗色；Naive 暗色主题、markdown 和代码高亮的暗色覆盖（styles/dark-content.css 由 GitHub 暗色样式生成）、CodeMirror One Dark 配色、md-editor 暗色；组件里剩下的硬编码颜色全部换成配色变量 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-27 08:17:43 +08:00
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+<template>
+  <div class="editor-page">
+    <aside class="list">
+      <div class="list-head">
+        <b>{{ kindLabel }}</b>
+        <n-button size="small" @click="createNew">
+          <template #icon><Icon icon="lucide:plus" /></template>
+          新建
+        </n-button>
+      </div>
+      <div class="items">
+        <div
+          v-for="item in list"
+          :key="item.display"
+          :class="['item', { on: item.display === form.display, draft: !item.is_public }]"
+          @click="show(item.display)"
+        >
+          <n-tooltip>
+            <template #trigger>
+              <n-button text @click.stop="togglePublic(item.display)">
+                <Icon :icon="item.is_public ? 'lucide:globe' : 'lucide:lock'" :width="16" />
+              </n-button>
+            </template>
+            {{ item.is_public ? "已公开，点击设为不公开" : "未公开，点击公开" }}
+          </n-tooltip>
+          <span class="item-title">{{ item.display }}. {{ item.title }}</span>
+          <span v-if="kind === 'challenge'" class="item-score">{{ item.score }}分</span>
+          <n-tooltip>
+            <template #trigger>
+              <n-button text class="item-del" @click.stop="remove(item.display)">
+                <Icon icon="lucide:trash-2" :width="14" />
+              </n-button>
+            </template>
+            删除
+          </n-tooltip>
+        </div>
+      </div>
+    </aside>
+
+    <main class="form">
+      <n-form inline :show-feedback="false" class="fields">
+        <n-form-item label="序号" label-placement="left">
+          <n-input-number style="width: 96px" v-model:value="form.display" />
+        </n-form-item>
+        <n-form-item label="标题" label-placement="left">
+          <n-input v-model:value="form.title" style="width: 220px" />
+        </n-form-item>
+        <n-form-item v-if="kind === 'challenge'" label="分数" label-placement="left">
+          <n-input-number style="width: 96px" v-model:value="form.score" :min="0" />
+        </n-form-item>
+        <n-form-item label="公开" label-placement="left">
+          <n-switch v-model:value="form.is_public" />
+        </n-form-item>
+        <n-form-item v-if="kind === 'challenge'" label="出题人" label-placement="left">
+          <n-text depth="3">{{ form.author_name || "未设置" }}</n-text>
+        </n-form-item>
+      </n-form>
+      <n-flex align="center" class="actions">
+        <n-button type="primary" :disabled="!canSave" :loading="saving" @click="save">
+          保存
+        </n-button>
+        <TaskAssetManager v-if="form.display" :task-type="kind" :display="form.display" />
+        <n-button v-if="form.display" @click="showExampleModal = true">示例代码</n-button>
+        <n-text depth="3" class="hint">{{ exampleHint }}</n-text>
+      </n-flex>
+      <MarkdownEditor class="md" v-model="form.content" />
+    </main>
+  </div>
+
+  <n-modal
+    v-model:show="showExampleModal"
+    preset="card"
+    :title="`示例代码（${exampleHint}）`"
+    style="width: 640px"
+  >
+    <n-input
+      type="textarea"
+      v-model:value="rawCode"
+      placeholder="粘贴完整的网页代码，会自动拆成 HTML / CSS / JS"
+      :autosize="{ minRows: 10, maxRows: 30 }"
+    />
+    <n-flex v-if="splitResult" style="margin-top: 8px">
+      <n-tag size="small" type="success">HTML · {{ splitResult.html.length }} 字符</n-tag>
+      <n-tag size="small" type="info">CSS · {{ splitResult.css.length }} 字符</n-tag>
+      <n-tag size="small" type="warning">JS · {{ splitResult.js.length }} 字符</n-tag>
+    </n-flex>
+    <template #footer>
+      <n-text depth="3">关掉窗口后点“保存”才会存下来。</n-text>
+    </template>
+  </n-modal>
+</template>
+<script lang="ts" setup>
+import { computed, onMounted, reactive, ref, watch } from "vue"
+import { useRoute, useRouter } from "vue-router"
+import { useDialog, useMessage } from "naive-ui"
+import { Icon } from "../icons"
+import { Challenge, Tutorial } from "../api"
+import { splitHtml, type Code } from "../utils/code"
+import MarkdownEditor from "../components/dashboard/MarkdownEditor.vue"
+import TaskAssetManager from "../components/task/TaskAssetManager.vue"
+
+// 教程和挑战的出题页（以前是两个几乎一样的文件）
+const props = defineProps<{ kind: "tutorial" | "challenge" }>()
+
+const route = useRoute()
+const router = useRouter()
+const message = useMessage()
+const dialog = useDialog()
+
+const api = props.kind === "tutorial" ? Tutorial : Challenge
+const kindLabel = props.kind === "tutorial" ? "教程" : "挑战"
+const routeName = props.kind === "tutorial" ? "tutorial-editor" : "challenge-editor"
+const exampleHint =
+  props.kind === "tutorial" ? "打开这一节教程时自动放进编辑器" : "学生点“放入示例代码”时使用"
+
+interface ListItem {
+  display: number
+  title: string
+  is_public: boolean
+  score?: number
+}
+
+const list = ref<ListItem[]>([])
+const saving = ref(false)
+const showExampleModal = ref(false)
+const rawCode = ref("")
+const splitResult = ref<Code | null>(null)
+
+const blank = () => ({
+  display: 0,
+  title: "",
+  content: "",
+  score: 0,
+  is_public: false,
+  author_name: "",
+  example_html: null as string | null,
+  example_css: null as string | null,
+  example_js: null as string | null,
+})
+const form = reactive(blank())
+
+const canSave = computed(() => !!(form.display && form.title && form.content))
+
+watch(rawCode, (val) => {
+  if (!val.trim()) {
+    splitResult.value = null
+    Object.assign(form, { example_html: null, example_css: null, example_js: null })
+    return
+  }
+  const split = splitHtml(val)
+  splitResult.value = split
+  form.example_html = split.html || null
+  form.example_css = split.css || null
+  form.example_js = split.js || null
+})
+
+watch(showExampleModal, (visible) => {
+  if (!visible) return
+  const parts: string[] = []
+  if (form.example_css) parts.push(`<style>\n${form.example_css}\n</style>`)
+  if (form.example_html) parts.push(form.example_html)
+  if (form.example_js) parts.push(`<script>\n${form.example_js}\n<\/script>`)
+  rawCode.value = parts.join("\n\n")
+})
+
+async function loadList() {
+  list.value = await api.list()
+}
+
+async function show(display: number) {
+  router.replace({ name: routeName, params: { display } })
+  const item: any = await api.get(display)
+  Object.assign(form, blank(), {
+    display: item.display,
+    title: item.title,
+    content: item.content,
+    score: item.score ?? 0,
+    is_public: item.is_public,
+    author_name: item.author_name ?? "",
+    example_html: item.example_html ?? null,
+    example_css: item.example_css ?? null,
+    example_js: item.example_js ?? null,
+  })
+}
+
+function createNew() {
+  // 列表按序号升序，新的接在最后
+  Object.assign(form, blank(), {
+    display: (list.value[list.value.length - 1]?.display ?? 0) + 1,
+  })
+}
+
+async function save() {
+  saving.value = true
+  try {
+    const res = await api.createOrUpdate(form as any)
+    message.success(res?.message ?? "已保存")
+    await loadList()
+    // 保存后留在这一项上，方便接着改
+    await show(form.display)
+  } catch (error: any) {
+    message.error(error.response?.data?.detail ?? "保存失败")
+  } finally {
+    saving.value = false
+  }
+}
+
+function remove(display: number) {
+  const item = list.value.find((i) => i.display === display)
+  dialog.warning({
+    title: `删除${kindLabel}「${item?.title ?? display}」？`,
+    content: "学生在这个任务上的提交和对话也会一起删除，不能恢复。",
+    positiveText: "删除",
+    negativeText: "取消",
+    onPositiveClick: async () => {
+      await api.remove(display)
+      message.success("已删除")
+      await loadList()
+      if (form.display === display) {
+        if (list.value.length) show(list.value[0]!.display)
+        else createNew()
+      }
+    },
+  })
+}
+
+async function togglePublic(display: number) {
+  const data = await api.togglePublic(display)
+  message.success(data.message)
+  const item = list.value.find((i) => i.display === display)
+  if (item) item.is_public = !item.is_public
+  if (form.display === display) form.is_public = !form.is_public
+}
+
+onMounted(async () => {
+  await loadList()
+  const display = Number(route.params.display)
+  if (list.value.some((item) => item.display === display)) show(display)
+  else if (list.value.length) show(list.value[0]!.display)
+  else createNew()
+})
+</script>
+<style scoped>
+.editor-page {
+  height: 100%;
+  display: flex;
+  min-width: 0;
+}
+
+.list {
+  width: 280px;
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  border-right: 1px solid var(--wp-line);
+  min-height: 0;
+}
+
+.list-head {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 10px 12px;
+  border-bottom: 1px solid var(--wp-line);
+}
+
+.items {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  padding: 6px;
+}
+
+.item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 7px 8px;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 13px;
+}
+
+.item:hover {
+  background: var(--wp-paper);
+}
+
+.item.on {
+  background: var(--wp-brand-soft);
+  color: var(--wp-brand);
+}
+
+.item.draft .item-title {
+  color: var(--wp-muted);
+}
+
+.item-title {
+  flex: 1;
+  min-width: 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.item-score {
+  font: 12px var(--wp-font-mono);
+  color: var(--wp-warn);
+}
+
+.item-del {
+  opacity: 0;
+}
+
+.item:hover .item-del,
+.item-del:focus-visible {
+  opacity: 1;
+}
+
+.form {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 12px 14px;
+  min-height: 0;
+}
+
+.fields {
+  flex-wrap: wrap;
+  row-gap: 8px;
+}
+
+.hint {
+  font-size: 12px;
+}
+
+.md {
+  flex: 1;
+  min-height: 0;
+}
+</style>