feat: Enhance entity options retrieval with additional fields support

- Updated the `getEntityOptions` function to accept an optional `fields` parameter, allowing clients to specify additional columns to be retrieved.
- Implemented logic to dynamically include extra columns in the SQL query based on the provided `fields`, improving flexibility in data retrieval.
- Enhanced the response to indicate whether extra fields were included, facilitating better client-side handling of the data.
- Added logging for authentication failures in the `AuthGuard` component to improve debugging and user experience.
- Integrated auto-fill functionality in the `V2Select` component to automatically populate fields based on selected entity references, enhancing user interaction.
- Updated the `ItemSearchModal` to support multi-selection of items, improving usability in item management scenarios.

frontend/types/v2-components.ts

@@ -182,6 +182,8 @@ export interface V2SelectProps extends V2BaseProps {
   config: V2SelectConfig;
   value?: string | string[];
   onChange?: (value: string | string[]) => void;
+  onFormDataChange?: (fieldName: string, value: any) => void;
+  formData?: Record<string, any>;
 }
 
 // ===== V2Date =====