feat(notification): 實作通知輪詢與優化顯示名稱

- 新增通知輪詢 API 與前端自動更新機制
- 修正生產工單單號格式為 PRO-YYYYMMDD-XX
- 確保通知顯示實際建立者名稱而非系統

app/Modules/Core/Controllers/NotificationController.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Modules\Core\Controllers;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+
+class NotificationController extends Controller
+{
+    /**
+     * Mark a specific notification as read.
+     */
+    public function markAsRead(Request $request, string $id)
+    {
+        $notification = $request->user()->notifications()->findOrFail($id);
+        $notification->markAsRead();
+
+        return back();
+    }
+
+    /**
+     * Mark all notifications as read.
+     */
+    public function markAllAsRead(Request $request)
+    {
+        $request->user()->unreadNotifications->markAsRead();
+
+        return back();
+    }
+
+    /**
+     * Check for new notifications.
+     */
+    public function check(Request $request)
+    {
+        return response()->json([
+            'unread_count' => $request->user()->unreadNotifications()->count(),
+            'latest' => $request->user()->notifications()->latest()->limit(10)->get(),
+        ]);
+    }
+}