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/Production/Models/ProductionOrder.php

@@ -112,13 +112,17 @@ class ProductionOrder extends Model
 
     public static function generateCode()
     {
-        $prefix = 'PO' . now()->format('Ymd');
-        $lastOrder = self::where('code', 'like', $prefix . '%')->latest()->first();
+        $prefix = 'PRO-' . now()->format('Ymd') . '-';
+        $lastOrder = self::where('code', 'like', $prefix . '%')
+            ->lockForUpdate()
+            ->orderBy('code', 'desc')
+            ->first();
+
         if ($lastOrder) {
-            $lastSequence = intval(substr($lastOrder->code, -3));
-            $sequence = str_pad($lastSequence + 1, 3, '0', STR_PAD_LEFT);
+            $lastSequence = intval(substr($lastOrder->code, -2));
+            $sequence = str_pad($lastSequence + 1, 2, '0', STR_PAD_LEFT);
         } else {
-            $sequence = '001';
+            $sequence = '01';
         }
         return $prefix . $sequence;
     }
@@ -127,4 +131,9 @@ class ProductionOrder extends Model
     {
         return $this->hasMany(ProductionOrderItem::class);
     }
+
+    public function user(): \Illuminate\Database\Eloquent\Relations\BelongsTo
+    {
+        return $this->belongsTo(\App\Modules\Core\Models\User::class);
+    }
 }

app/Modules/Production/Notifications/NewProductionOrder.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Modules\Production\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+use App\Modules\Production\Models\ProductionOrder;
+
+class NewProductionOrder extends Notification
+{
+    use Queueable;
+
+    protected $productionOrder;
+    protected $creatorName;
+
+    /**
+     * Create a new notification instance.
+     */
+    public function __construct(ProductionOrder $productionOrder, string $creatorName)
+    {
+        $this->productionOrder = $productionOrder;
+        $this->creatorName = $creatorName;
+    }
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @return array<int, string>
+     */
+    public function via(object $notifiable): array
+    {
+        return ['database'];
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(object $notifiable): array
+    {
+        return [
+            'type' => 'production_order',
+            'action' => 'created',
+            'production_order_id' => $this->productionOrder->id,
+            'code' => $this->productionOrder->code,
+            'creator_name' => $this->creatorName,
+            'message' => "{$this->creatorName} 建立了新的生產工單：{$this->productionOrder->code}",
+            'link' => route('production-orders.index', ['search' => $this->productionOrder->code]),
+        ];
+    }
+}

app/Modules/Production/Observers/ProductionOrderObserver.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Modules\Production\Observers;
+
+use App\Modules\Production\Models\ProductionOrder;
+use App\Modules\Production\Notifications\NewProductionOrder;
+use App\Modules\Core\Models\User;
+use Illuminate\Support\Facades\Notification;
+
+class ProductionOrderObserver
+{
+    /**
+     * Handle the ProductionOrder "created" event.
+     */
+    public function created(ProductionOrder $productionOrder): void
+    {
+        // 找出有檢視生產工單權限的使用者
+        $users = User::permission('production_orders.view')->get();
+
+        $creatorName = $productionOrder->user ? $productionOrder->user->name : '系統';
+
+        if ($users->isNotEmpty()) {
+            Notification::send($users, new NewProductionOrder($productionOrder, $creatorName));
+        }
+    }
+}

app/Modules/Production/ProductionServiceProvider.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Modules\Production;
+
+use Illuminate\Support\ServiceProvider;
+use App\Modules\Production\Models\ProductionOrder;
+use App\Modules\Production\Observers\ProductionOrderObserver;
+
+class ProductionServiceProvider extends ServiceProvider
+{
+    public function register(): void
+    {
+        //
+    }
+
+    public function boot(): void
+    {
+        ProductionOrder::observe(ProductionOrderObserver::class);
+    }
+}