feat: 優化操作紀錄顯示與邏輯 (恢復描述欄位、支援來源標記、改進快照)

app/Http/Controllers/Admin/ActivityLogController.php

@@ -33,6 +33,8 @@ class ActivityLogController extends Controller
                     'App\Models\Category' => '商品分類',
                     'App\Models\Unit' => '單位',
                     'App\Models\PurchaseOrder' => '採購單',
+                    'App\Models\Warehouse' => '倉庫',
+                    'App\Models\Inventory' => '庫存',
                 ];
 
                 $eventMap = [

app/Http/Controllers/InventoryController.php

@@ -103,7 +103,8 @@ class InventoryController extends Controller
         return \Illuminate\Support\Facades\DB::transaction(function () use ($validated, $warehouse) {
             foreach ($validated['items'] as $item) {
                 // 取得或建立庫存紀錄
-                $inventory = $warehouse->inventories()->firstOrCreate(
+                // 取得或初始化庫存紀錄
+                $inventory = $warehouse->inventories()->firstOrNew(
                     ['product_id' => $item['productId']],
                     ['quantity' => 0, 'safety_stock' => null]
                 );
@@ -111,8 +112,9 @@ class InventoryController extends Controller
                 $currentQty = $inventory->quantity;
                 $newQty = $currentQty + $item['quantity'];
 
-                // 更新庫存
-                $inventory->update(['quantity' => $newQty]);
+                // 更新庫存並儲存 (新紀錄: Created, 舊紀錄: Updated)
+                $inventory->quantity = $newQty;
+                $inventory->save();
 
                 // 寫入異動紀錄
                 $inventory->transactions()->create([

app/Http/Controllers/TransferOrderController.php

@@ -56,6 +56,9 @@ class TransferOrderController extends Controller
             // 3. 執行庫存轉移 (扣除來源)
             $oldSourceQty = $sourceInventory->quantity;
             $newSourceQty = $oldSourceQty - $validated['quantity'];
+            
+            // 設定活動紀錄原因
+            $sourceInventory->activityLogReason = "撥補出庫 至 {$targetWarehouse->name}";
             $sourceInventory->update(['quantity' => $newSourceQty]);
 
             // 記錄來源異動
@@ -72,6 +75,9 @@ class TransferOrderController extends Controller
             // 4. 執行庫存轉移 (增加目標)
             $oldTargetQty = $targetInventory->quantity;
             $newTargetQty = $oldTargetQty + $validated['quantity'];
+
+            // 設定活動紀錄原因
+            $targetInventory->activityLogReason = "撥補入庫 來自 {$sourceWarehouse->name}";
             $targetInventory->update(['quantity' => $newTargetQty]);
 
             // 記錄目標異動