feat(mp, web, calendar): 新增微信收藏夹与日历批量生成功能

- 新增微信小程序版个人收藏夹全套功能，包含聚合首页、收藏列表、编辑、详情页面与配套后端API
- 新增web版时光助手门户与个人收藏夹工具，支持与小程序共享后端数据
- 优化日历提醒工具：替换本地bootstrap资源为公共CDN版本，新增批量生成循环提醒的前端界面与后端逻辑，新增数据库batch_id字段，更新鉴权配置文件
- 补充项目配置、站点地图、调试诊断脚本等配套文件
- 完善各模块的页面配置与样式文件

src/server/mp_time_assistant/index.js

@@ -0,0 +1,92 @@
+const Database = require('better-sqlite3')
+const path = require('path')
+const { bindRoutes: bindPersonalCollectRoutes } = require('./kits/personal_collect')
+
+const CORE_DB_PATH = path.join(process.cwd(), 'data', 'mp_time_assistant_core.db')
+
+let db = null
+
+const KIT_META = [
+  {
+    id: 'personal_collect',
+    name: '微信收藏夹',
+    description: '聊天图片、文件收藏管理，标签搜索，软删除可追溯。',
+  },
+]
+
+const nowIso = () => new Date().toISOString()
+
+const getDb = () => {
+  if (db) return db
+  db = new Database(CORE_DB_PATH)
+  db.pragma('journal_mode = WAL')
+  db.exec(`CREATE TABLE IF NOT EXISTS core_state (
+    id INTEGER PRIMARY KEY CHECK (id = 1),
+    active_kit TEXT,
+    updated_at TEXT NOT NULL
+  );`)
+  db.prepare(`
+    INSERT OR IGNORE INTO core_state (id, active_kit, updated_at)
+    VALUES (1, NULL, ?)
+  `).run(nowIso())
+  return db
+}
+
+const getStateRow = () => {
+  const row = getDb().prepare(`SELECT * FROM core_state WHERE id = 1 LIMIT 1`).get()
+  if (!row) {
+    getDb().prepare(`
+      INSERT INTO core_state (id, active_kit, updated_at)
+      VALUES (1, NULL, ?)
+    `).run(nowIso())
+    return getStateRow()
+  }
+  return row
+}
+
+const setActiveKit = kitId => {
+  getDb().prepare(`UPDATE core_state SET active_kit = ?, updated_at = ? WHERE id = 1`).run(kitId || null, nowIso())
+}
+
+const serializeState = () => {
+  const row = getStateRow()
+  return {
+    ok: true,
+    activeKit: row.active_kit || null,
+  }
+}
+
+const bindRoutes = app => {
+  getDb()
+
+  app.get('/api/mp_time_assistant/meta', (req, res) => {
+    res.json({
+      ok: true,
+      appName: 'MpTimeAssistant',
+      appNameZh: 'MilesYang时光助手',
+      kits: KIT_META,
+    })
+  })
+
+  app.get('/api/mp_time_assistant/state', (req, res) => {
+    res.json(serializeState())
+  })
+
+  app.put('/api/mp_time_assistant/state/active-kit', (req, res) => {
+    try {
+      const raw = String(req.body && req.body.kitId || '').trim()
+      const nextKit = raw || null
+      if (nextKit && !KIT_META.find(item => item.id === nextKit)) {
+        return res.status(400).json({ ok: false, error: 'unknown kit id' })
+      }
+      setActiveKit(nextKit)
+      return res.json({ ok: true, activeKit: nextKit })
+    } catch (e) {
+      return res.status(500).json({ ok: false, error: String(e.message || e) })
+    }
+  })
+
+  bindPersonalCollectRoutes(app)
+}
+
+module.exports = { bindRoutes }