fix: 統一 UI 按鈕樣式並新增 button-outlined-error hover 效果

- 修正 5 處硬編碼顏色樣式改用預定義按鈕類別
- 新增 button-outlined-error 的 hover 狀態（bg-red-50）
- 修正倉庫模組刪除按鈕樣式統一性
- 角色管理權限 Badge 改用標準組件
- 新增 UI 統一性規範 skill
- 修復 1 處 lint 警告（移除未使用參數）

變更檔案：
- resources/css/app.css: 新增 button-outlined-error hover 樣式
- resources/js/Components/Warehouse/WarehouseDialog.tsx
- resources/js/Pages/Admin/Role/Index.tsx
- resources/js/Pages/Warehouse/EditInventory.tsx
- resources/js/Pages/Warehouse/Inventory.tsx
- resources/js/Pages/Warehouse/SafetyStockSettings.tsx
- .agent/skills/ui-consistency/SKILL.md (新增)

resources/js/Pages/Warehouse/EditInventory.tsx

@@ -102,7 +102,7 @@ export default function EditInventory({ warehouse, inventory, transactions = []
                             <Button
                                 onClick={() => setShowDeleteDialog(true)}
                                 variant="outline"
-                                className="group border-red-200 text-red-600 hover:bg-red-50 hover:text-red-700 hover:border-red-300"
+                                className="button-outlined-error"
                             >
                                 <Trash2 className="mr-2 h-4 w-4" />
                                 刪除品項
@@ -250,7 +250,7 @@ export default function EditInventory({ warehouse, inventory, transactions = []
                             </AlertDialogCancel>
                             <AlertDialogAction
                                 onClick={handleDelete}
-                                className="bg-red-600 text-white hover:bg-red-700"
+                                className="button-filled-error"
                             >
                                 確認刪除
                             </AlertDialogAction>