feat: 優化採購單操作紀錄與統一刪除確認 UI

- 優化採購單更新與刪除的活動紀錄邏輯 (PurchaseOrderController)
  - 整合更新異動為單一紀錄，包含品項差異
  - 刪除時記錄當下品項快照
- 統一採購單刪除確認介面，使用 AlertDialog 取代原生 confirm (PurchaseOrderActions)
- Refactor: 將 ActivityDetailDialog 移至 Components/ActivityLog 並優化樣式與大數據顯示
- 調整 UI 文字：將「總金額」統一為「小計」
- 其他模型與 Controller 的活動紀錄支援更新

app/Http/Controllers/VendorProductController.php

@@ -27,6 +27,25 @@ class VendorProductController extends Controller
             'last_price' => $validated['last_price'] ?? null
         ]);
 
+        // 記錄操作
+        $product = \App\Models\Product::find($validated['product_id']);
+        activity()
+            ->performedOn($vendor)
+            ->withProperties([
+                'attributes' => [
+                    'product_name' => $product->name,
+                    'last_price' => $validated['last_price'] ?? null,
+                ],
+                'sub_subject' => '供貨商品',
+                'snapshot' => [
+                    'name' => "{$vendor->name}-{$product->name}", // 顯示例如：台積電-紅糖
+                    'vendor_name' => $vendor->name,
+                    'product_name' => $product->name,
+                ]
+            ])
+            ->event('created')
+            ->log('新增供貨商品');
+
         return redirect()->back()->with('success', '供貨商品已新增');
     }
 
@@ -39,10 +58,34 @@ class VendorProductController extends Controller
             'last_price' => 'nullable|numeric|min:0',
         ]);
 
+        // 獲取舊價格
+        $old_price = $vendor->products()->where('product_id', $productId)->first()?->pivot?->last_price;
+
         $vendor->products()->updateExistingPivot($productId, [
             'last_price' => $validated['last_price'] ?? null
         ]);
 
+        // 記錄操作
+        $product = \App\Models\Product::find($productId);
+        activity()
+            ->performedOn($vendor)
+            ->withProperties([
+                'old' => [
+                    'last_price' => $old_price,
+                ],
+                'attributes' => [
+                    'last_price' => $validated['last_price'] ?? null,
+                ],
+                'sub_subject' => '供貨商品',
+                'snapshot' => [
+                    'name' => "{$vendor->name}-{$product->name}",
+                    'vendor_name' => $vendor->name,
+                    'product_name' => $product->name,
+                ]
+            ])
+            ->event('updated')
+            ->log('更新供貨商品價格');
+
         return redirect()->back()->with('success', '供貨資訊已更新');
     }
 
@@ -51,8 +94,31 @@ class VendorProductController extends Controller
      */
     public function destroy(Vendor $vendor, $productId)
     {
+        // 記錄操作 (需在 detach 前獲取資訊)
+        $product = \App\Models\Product::find($productId);
+        $old_price = $vendor->products()->where('product_id', $productId)->first()?->pivot?->last_price;
+        
         $vendor->products()->detach($productId);
 
+        if ($product) {
+            activity()
+                ->performedOn($vendor)
+                ->withProperties([
+                    'old' => [
+                        'product_name' => $product->name,
+                        'last_price' => $old_price,
+                    ],
+                    'sub_subject' => '供貨商品',
+                    'snapshot' => [
+                        'name' => "{$vendor->name}-{$product->name}",
+                        'vendor_name' => $vendor->name,
+                        'product_name' => $product->name,
+                    ]
+                ])
+                ->event('deleted')
+                ->log('移除供貨商品');
+        }
+
         return redirect()->back()->with('success', '供貨商品已移除');
     }
 }