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>

app/Http/Controllers/API/MemberBookingController.php

@@ -7,9 +7,12 @@ use App\Enums\ScheduleStatus;
 use App\Http\Controllers\Controller;
 use App\Models\Booking;
 use App\Models\CourseSchedule;
+use App\Notifications\BookingCreatedNotification;
+use App\Notifications\BookingCancelledNotification;
 use Carbon\Carbon;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
 
 class MemberBookingController extends Controller
 {
@@ -84,6 +87,14 @@ class MemberBookingController extends Controller
             return response()->json(['status' => false, 'message' => $e->getMessage()], 422);
         }
 
+        try {
+            $booking->load('schedule.divingOffer.provider');
+            $provider = $booking->schedule->divingOffer->provider;
+            $provider->notify(new BookingCreatedNotification($booking));
+        } catch (\Throwable $e) {
+            Log::error('BookingCreatedNotification failed: ' . $e->getMessage());
+        }
+
         return response()->json([
             'status'  => true,
             'message' => '預約已送出，等待教練確認',
@@ -126,6 +137,14 @@ class MemberBookingController extends Controller
             }
         });
 
+        try {
+            $booking->load('schedule.divingOffer.provider');
+            $provider = $booking->schedule->divingOffer->provider;
+            $provider->notify(new BookingCancelledNotification($booking, cancelledBy: 'member'));
+        } catch (\Throwable $e) {
+            Log::error('BookingCancelledNotification(member) failed: ' . $e->getMessage());
+        }
+
         return response()->json(['status' => true, 'message' => '預約已取消']);
     }