feat:實作評價系統 — 匿名評價、有幫助投票、手動完成預約

後端：
- 新增 reviews / review_edits / review_votes migration（含索引）
- Review / ReviewEdit / ReviewVote Model
- ReviewController：評價 CRUD、資格驗證（completed booking）、rating 即時重算
- toggleHelpful：Member 限定、GREATEST 原子防負、DB transaction 同步
- AdminReviewController：全量列表、刪除（含重算）
- AdminBookingController：全量列表、手動標記 completed
- ProviderBookingController 新增 complete 方法（教練手動完成預約）
- DevelopmentSeeder：快速重建測試資料（admin/coach/member + offers + bookings）
- EnsureAdmin middleware 正式納入 bootstrap/app.php
- Nginx server_name 加入 cfdive.local

前端：
- 課程詳情頁加入評價區塊（星等分布、排序切換、撰寫/修改/刪除、有幫助 Toggle）
- Coach Portal 新增「課程評價」頁（只讀，依課程分組）
- Coach 預約管理加入「完成」按鈕
- Admin 新增「預約管理」頁（標記完成）、「評價管理」頁（刪除）
- Admin / Coach Navbar 新增對應連結

OpenSpec：
- review-system change 歸檔至 archive/2026-05-12-review-system
- 新增 specs/review-lifecycle 與 specs/review-voting 主規格
- review-voting spec 補充 Member 限定與 GREATEST 原子更新說明

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

app/Http/Controllers/API/AdminBookingController.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Controllers\API;
+
+use App\Enums\BookingStatus;
+use App\Http\Controllers\Controller;
+use App\Models\Booking;
+
+class AdminBookingController extends Controller
+{
+    public function index()
+    {
+        $bookings = Booking::with(['member', 'schedule.divingOffer'])
+            ->orderByDesc('created_at')
+            ->get()
+            ->map(fn($b) => [
+                'id'             => $b->id,
+                'member_name'    => $b->member?->name,
+                'member_email'   => $b->member?->email,
+                'offer_title'    => $b->schedule?->divingOffer?->title,
+                'scheduled_date' => $b->schedule?->scheduled_date?->toDateString(),
+                'start_time'     => $b->schedule?->start_time,
+                'participants'   => $b->participants,
+                'total_price'    => $b->total_price,
+                'status'         => $b->status->value,
+                'created_at'     => $b->created_at?->toISOString(),
+            ]);
+
+        return response()->json(['status' => true, 'data' => $bookings]);
+    }
+
+    public function complete(int $id)
+    {
+        $booking = Booking::findOrFail($id);
+
+        if (!$booking->canTransitionTo(BookingStatus::Completed)) {
+            return response()->json(['status' => false, 'message' => '只有已確認的預約才能標記完成'], 422);
+        }
+
+        $booking->update(['status' => BookingStatus::Completed]);
+
+        return response()->json(['status' => true, 'message' => '預約已標記為完成']);
+    }
+}