feat(homeworks,island,classisland,desktop,web,server): 作业按天查看与教室机器录入 + 提醒上课时段暂存规则 + 灵动岛边距/跟随鼠标屏幕

- 作业：新增 Homework.assignDate（本地日期 YYYY-MM-DD；UTC 切片在晚上会把今天的作业算成明天），列表按天过滤与排序，新增 GET /homeworks?date= 与 GET /homeworks/days（日期高亮）供客户端与 Web 共用；客户端作业页改为"看作业 + 录作业"（不再显示完成状态），支持快捷短语（存本机配置，「设置 → 作业录入」可增删/恢复默认）
- 教室机器录入：POST /homeworks 去掉 requireRole，权限下沉到 homeworks.service（staff 或本班班级账号）；班级账号的 sub 是班级 id，写 createdBy 前换成该班班主任，避免撞 User 外键
- 提醒类型：ClassIslandPush.kind（notification / call）。通知类上课时段暂存、下课补弹，叫人/紧急立即弹；客户端灵动岛与 ClassIsland 插件共用同一套规则
- 灵动岛：新增 marginX / marginY（默认仍 8px，不动老外观）与「跟随鼠标屏幕」；文案统一成"灵动岛 / ClassIsland"
- 设置页：新增「ClassIsland 联动」（联动状态 + 通知模式）与「作业录入」分区
- 校验：verify:e2e 增补 assignDate 默认当天 / ?date= 过滤 / days / 非法日期 422 / 班级账号录入 201 与跨班 403；verify:classisland 与插件静态契约增补上课时段暂存断言（57/57）
- 文档：README 与 AGENTS.md 同步（作业按天、上课时段策略、两个方向的开关表、新增踩坑）

门禁：pnpm lint 0 error、pnpm typecheck 四包通过、verify:classisland-plugin 57/57 通过。
未跑：verify:e2e / verify:classisland（需后端启动）、verify:web / verify:desktop（需先构建产物）。

packages/server/scripts/verify-classisland.mjs

@@ -304,6 +304,12 @@ async function main() {
     published.status === 201 && Boolean(publishPush),
     `status=${published.status} 待提醒=${(pendingAfterPublish.payload?.data?.notifications ?? []).length}`,
   );
+  // kind 决定插件"上课时段弹不弹"：通知类会被暂存，叫人属于主动通知要立刻弹
+  record(
+    '通知类推送的 kind=notification（上课时段插件会暂存）',
+    publishPush?.kind === 'notification',
+    `kind=${publishPush?.kind}`,
+  );
   if (publishPush) {
     await api('/integrations/classisland/ack', {
       method: 'POST',
@@ -326,6 +332,11 @@ async function main() {
     Boolean(firstStudent) && call.status === 201 && Boolean(callPush),
     firstStudent ? `status=${call.status}` : '班级里没有学生，跳过',
   );
+  record(
+    '叫人推送的 kind=call（算主动通知，上课时段也立刻弹）',
+    callPush?.kind === 'call',
+    `kind=${callPush?.kind}`,
+  );
   if (callPush) {
     await api('/integrations/classisland/ack', {
       method: 'POST',

packages/server/scripts/verify-e2e.mjs

@@ -455,6 +455,36 @@ async function main() {
     createdHomework.payload?.data?.dueAt === undefined,
     `dueAt=${String(createdHomework.payload?.data?.dueAt)}`,
   );
+  // 按天查看：作业带"所属日期"（本地日期），并且能按它过滤
+  const assignDate = createdHomework.payload?.data?.assignDate;
+  record(
+    '作业带所属日期（assignDate，默认服务器当天）',
+    typeof assignDate === 'string' && /^\d{4}-\d{2}-\d{2}$/.test(assignDate),
+    `assignDate=${assignDate}`,
+  );
+  const byDay = await api(`/homeworks?classId=${classId}&date=${assignDate}`, { token: teacherToken });
+  record(
+    '按天查看（?date=）只返回该天的作业',
+    byDay.status === 200 &&
+      (byDay.payload?.data ?? []).length > 0 &&
+      (byDay.payload?.data ?? []).every((item) => item.assignDate === assignDate),
+    `当天条数=${(byDay.payload?.data ?? []).length}`,
+  );
+  const otherDay = await api(`/homeworks?classId=${classId}&date=2000-01-01`, { token: teacherToken });
+  record(
+    '没有作业的日期返回空列表',
+    otherDay.status === 200 && (otherDay.payload?.data ?? []).length === 0,
+    `条数=${(otherDay.payload?.data ?? []).length}`,
+  );
+  const dayMarks = await api(`/homeworks/days?classId=${classId}`, { token: teacherToken });
+  const marks = dayMarks.payload?.data?.days ?? [];
+  record(
+    '作业日历返回有作业的日期（供日期选择器高亮）',
+    dayMarks.status === 200 && marks.some((item) => item.date === assignDate && item.count >= 1),
+    `日期数=${marks.length} 命中=${marks.find((item) => item.date === assignDate)?.count ?? 0}`,
+  );
+  const badDay = await api(`/homeworks/days?classId=${classId}&from=2026-13-45`, { token: teacherToken });
+  record('作业日历非法日期被拒（422）', badDay.status === 422, `status=${badDay.status}`);
 
   try {
     const { payload, elapsed } = await homeworkWait;
@@ -1867,6 +1897,46 @@ async function main() {
     `status=${classScheduleWrite.status}`,
   );
 
+  // 教室机器录入作业（需求：支持作业在客户端录入）：班级账号可以发，跨班不行
+  const classHomeworkCreate = await api('/homeworks', {
+    method: 'POST',
+    token: classToken,
+    body: {
+      classId,
+      title: '教室录入验证作业',
+      content: 'P 大本 第 3 课',
+      assignDate: '2026-03-02',
+    },
+  });
+  record(
+    '班级账号可在教室机器上录入作业',
+    classHomeworkCreate.status === 201 && classHomeworkCreate.payload?.data?.assignDate === '2026-03-02',
+    `status=${classHomeworkCreate.status} assignDate=${classHomeworkCreate.payload?.data?.assignDate}`,
+  );
+  if (foreignClass) {
+    const classHomeworkCreateCross = await api('/homeworks', {
+      method: 'POST',
+      token: classToken,
+      body: { classId: foreignClass.id, title: '跨班录入作业', content: '不应成功' },
+    });
+    record(
+      '班级账号跨班录入作业被拒绝（403）',
+      classHomeworkCreateCross.status === 403,
+      `status=${classHomeworkCreateCross.status}`,
+    );
+  }
+  if (classHomeworkCreate.payload?.data?.id) {
+    const cleanupHomework = await api(`/homeworks/${classHomeworkCreate.payload.data.id}`, {
+      method: 'DELETE',
+      token: teacherToken,
+    });
+    record(
+      '清理：教室录入的验证作业已删除',
+      cleanupHomework.status === 200,
+      `status=${cleanupHomework.status}`,
+    );
+  }
+
   // 班级设备代全班操作：通知已读
   const classNameNotice = await api('/notifications', {
     method: 'POST',