用 bun fmt 格式化全部代码和文档

- bunfig.toml 的 [fmt]：不写分号、单引号、一行最长 160，和原来的写法一致
- .prettierignore：docs/教材摘要/ 是书上的摘录，不格式化
- 模板里一行写两条语句的事件处理（@keydown.delete、@dblclick）改成调用方法：去掉分号后拆成两行，Vue 编译不过

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

web/src/teacher/AssignmentsPanel.vue

@@ -53,8 +53,7 @@ function review(row: Row) {
   void router.push(`/teacher/assignments/${row.id}`)
 }
 
-const formatTime = (ms: number) =>
-  new Date(ms).toLocaleString('zh-CN', { month: 'numeric', day: 'numeric', hour: '2-digit', minute: '2-digit' })
+const formatTime = (ms: number) => new Date(ms).toLocaleString('zh-CN', { month: 'numeric', day: 'numeric', hour: '2-digit', minute: '2-digit' })
 
 const columns: DataTableColumns<Row> = [
   { title: '作业', key: 'title' },

web/src/teacher/GradebookPanel.vue

@@ -46,8 +46,7 @@ function cell(row: Row, assignmentId: number) {
   const c = row.scores[assignmentId]
   const open = () => router.push({ path: `/teacher/assignments/${assignmentId}`, query: { student: row.userId } })
   if (!c?.submitted) return h('span', { class: 'missing' }, '未交')
-  const text =
-    c.manual !== null ? String(c.total) : c.aiManual !== null ? `${(c.auto ?? 0) + c.aiManual}（AI 建议，待确认）` : `${c.total}（待评）`
+  const text = c.manual !== null ? String(c.total) : c.aiManual !== null ? `${(c.auto ?? 0) + c.aiManual}（AI 建议，待确认）` : `${c.total}（待评）`
   return h(NButton, { text: true, type: 'primary', onClick: open }, () => text)
 }