fix: improve VS Code config synchronization and code formatting

- Add automatic VS Code config sync when base_url changes in TOML
- Improve error handling for VS Code configuration writes
- Enhance state management with ref tracking to prevent duplicate API calls
- Fix code formatting issues and improve readability across components
- Optimize common configuration handling for both Claude and Codex providers

src/utils/errorUtils.ts

@@ -35,4 +35,4 @@ export const extractErrorMessage = (error: unknown): string => {
   }
 
   return "";
-};
+};