refactor(ui):重构图像工作区导入语句

- 将 IMAGE_MODE_KEYS 的导入语句独立出来
- 调整导入顺序以提高代码可读性- 保持核心功能逻辑不变

Author: linshenkx

packages/ui/src/composables/useImageWorkspace.ts

@@ -12,9 +12,9 @@ import type {
   OptimizationRequest,
   OptimizationMode,
   ImageRequest,
-  ImageResult,
-  IMAGE_MODE_KEYS
+  ImageResult
 } from '@prompt-optimizer/core'
+import { IMAGE_MODE_KEYS } from '@prompt-optimizer/core'
 import type { AppServices } from '../types/services'
 import type { ModelSelectOption, SelectOption } from '../types/select-options'