refactor(modular): 完成第二階段儀表板解耦與模型清理

app/Modules/Procurement/Contracts/ProcurementServiceInterface.php

@@ -24,4 +24,11 @@ interface ProcurementServiceInterface
      * @return Collection
      */
     public function getPurchaseOrdersByIds(array $ids, array $with = []): Collection;
+
+    /**
+     * Get statistics for the dashboard.
+     * 
+     * @return array
+     */
+    public function getDashboardStats(): array;
 }

app/Modules/Procurement/Controllers/PurchaseOrderController.php

@@ -215,15 +215,7 @@ class PurchaseOrderController extends Controller
             // 確保有一個有效的使用者 ID
             $userId = auth()->id();
             if (!$userId) {
-                $user = \App\Modules\Core\Models\User::first();
-                if (!$user) {
-                    $user = \App\Modules\Core\Models\User::create([
-                        'name' => '系統管理員',
-                        'email' => 'admin@example.com',
-                        'password' => bcrypt('password'),
-                    ]);
-                }
-                $userId = $user->id;
+                $user = $this->coreService->ensureSystemUserExists();                $userId = $user->id;
             }
 
             $order = PurchaseOrder::create([

app/Modules/Procurement/Controllers/VendorController.php

@@ -78,8 +78,34 @@ class VendorController extends Controller
      */
     public function show(Vendor $vendor): Response
     {
-        $vendor->load(['products.baseUnit', 'products.largeUnit']);
+        // $vendor->load(['products.baseUnit', 'products.largeUnit']); // REMOVED: Cross-module relation
         
+        // 1. 獲取關聯的 Product IDs 與 Pivot Data
+        $pivots = \Illuminate\Support\Facades\DB::table('product_vendor')
+            ->where('vendor_id', $vendor->id)
+            ->get();
+            
+        $productIds = $pivots->pluck('product_id')->toArray();
+        
+        // 2. 透過 Service 獲取 Products
+        $products = $this->inventoryService->getProductsByIds($productIds)->keyBy('id');
+        
+        $supplyProducts = $pivots->map(function ($pivot) use ($products) {
+            $product = $products->get($pivot->product_id);
+            if (!$product) return null;
+            
+            return (object) [
+                'id' => (string) $pivot->id,
+                'productId' => (string) $product->id,
+                'productName' => $product->name,
+                'unit' => $product->baseUnit?->name ?? 'N/A',
+                'baseUnit' => $product->baseUnit?->name,
+                'largeUnit' => $product->largeUnit?->name,
+                'conversionRate' => (float) $product->conversion_rate,
+                'lastPrice' => (float) $pivot->last_price,
+            ];
+        })->filter()->values();
+
         $formattedVendor = (object) [
             'id' => (string) $vendor->id,
             'code' => $vendor->code,
@@ -93,16 +119,7 @@ class VendorController extends Controller
             'email' => $vendor->email,
             'address' => $vendor->address,
             'remark' => $vendor->remark,
-            'supplyProducts' => $vendor->products->map(fn($p) => (object) [
-                'id' => (string) $p->pivot->id,
-                'productId' => (string) $p->id,
-                'productName' => $p->name,
-                'unit' => $p->baseUnit?->name ?? 'N/A',
-                'baseUnit' => $p->baseUnit?->name,
-                'largeUnit' => $p->largeUnit?->name,
-                'conversionRate' => (float) $p->conversion_rate,
-                'lastPrice' => (float) $p->pivot->last_price,
-            ]),
+            'supplyProducts' => $supplyProducts,
         ];
 
         return Inertia::render('Vendor/Show', [

app/Modules/Procurement/Models/PurchaseOrderItem.php

@@ -4,7 +4,7 @@ namespace App\Modules\Procurement\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
-use App\Modules\Inventory\Models\Product;
+
 
 class PurchaseOrderItem extends Model
 {

app/Modules/Procurement/Models/Vendor.php

@@ -6,7 +6,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Spatie\Activitylog\Traits\LogsActivity;
 use Spatie\Activitylog\LogOptions;
-use App\Modules\Inventory\Models\Product;
+
 
 class Vendor extends Model
 {

app/Modules/Procurement/Services/ProcurementService.php

@@ -20,4 +20,13 @@ class ProcurementService implements ProcurementServiceInterface
     {
         return PurchaseOrder::whereIn('id', $ids)->with($with)->get();
     }
+
+    public function getDashboardStats(): array
+    {
+        return [
+            'vendorsCount' => \App\Modules\Procurement\Models\Vendor::count(),
+            'purchaseOrdersCount' => PurchaseOrder::count(),
+            'pendingOrdersCount' => PurchaseOrder::where('status', 'pending')->count(),
+        ];
+    }
 }