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/Models/Vendor.php

@@ -44,4 +44,19 @@ class Vendor extends Model
             ->logOnlyDirty()
             ->dontSubmitEmptyLogs();
     }
+
+    public function tapActivity(\Spatie\Activitylog\Contracts\Activity $activity, string $eventName)
+    {
+        $properties = $activity->properties;
+        
+        // Store name in 'snapshot' for context, keeping 'attributes' clean
+        $snapshot = $properties['snapshot'] ?? [];
+        // Only set name if it's not already set (e.g. by controller for specific context like supply product)
+        if (!isset($snapshot['name'])) {
+            $snapshot['name'] = $this->name;
+        }
+        $properties['snapshot'] = $snapshot;
+
+        $activity->properties = $properties;
+    }
 }