feat:實作通知系統 — 站內通知、Email 通知、Polling 機制

後端
- 新增 6 個 Notification class（預約建立/確認/拒絕/取消/完成、收到評價），database + mail 雙 channel
- 新增 NotificationController（list / unread-count / markRead / markAllRead / destroy）
- 整合通知觸發至 MemberBookingController、ProviderBookingController、CompleteFinishedBookings、ReviewController
- 新增 notifications / jobs / failed_jobs migration
- Docker Compose 加入 queue-worker、mailpit service
- DivingOffer 補上 provider() 關聯

前端
- 新增 notificationStore（Polling 30s/60s 自適應 + Page Visibility API）
- 新增 NotificationBell（未讀 Badge）、NotificationDrawer（側邊通知中心）
- main.js：auth store init 前置於 router.use()，修正 beforeEach guard 時序問題
- notificationAxios：依路徑動態選擇 member/coach token
- NotificationDrawer：改用 new URL().pathname 提取 action_url 路徑

OpenSpec
- 歸檔 notification-system change
- 同步 notification-core / notification-email / notification-triggers specs 至主規格
- 更新 booking-lifecycle / review-lifecycle spec（補充通知觸發 requirement）

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

routes/api.php

@@ -14,6 +14,7 @@ use App\Http\Controllers\API\CourseImageController;
 use App\Http\Controllers\API\AdminStatsController;
 use App\Http\Controllers\API\AdminUserController;
 use App\Http\Controllers\API\AdminOfferController;
+use App\Http\Controllers\API\NotificationController;
 
 // 這裡可以定義 API 路由，例如：
 Route::get('/ping', function () {
@@ -143,6 +144,15 @@ Route::middleware(['auth:sanctum', 'admin'])->prefix('admin')->group(function ()
     Route::delete('/reviews/{id}',  [AdminReviewController::class, 'destroy']);
 });
 
+// 通知（Member + Provider 共用）
+Route::middleware('auth:sanctum')->prefix('notifications')->group(function () {
+    Route::get('/',          [NotificationController::class, 'index']);
+    Route::get('/unread-count', [NotificationController::class, 'unreadCount']);
+    Route::patch('/read-all',   [NotificationController::class, 'markAllRead']);
+    Route::patch('/{id}/read',  [NotificationController::class, 'markRead']);
+    Route::delete('/{id}',      [NotificationController::class, 'destroy']);
+});
+
 // 需要認證的通用路由
 Route::middleware('auth:sanctum')->group(function () {
     Route::post('/logout', [AuthController::class, 'logout']);