refactor: enhance file system utilities with isENOENT helper

- Added isENOENT function to routes/common.ts for improved error handling.
- Re-exported isENOENT alongside existing utilities for better accessibility.

This change streamlines error management in file system operations.

apps/server/src/routes/fs/common.ts

@@ -3,10 +3,11 @@
  */
 
 import { createLogger } from '@automaker/utils';
-import { getErrorMessage as getErrorMessageShared, createLogError } from '../common.js';
+import { getErrorMessage as getErrorMessageShared, createLogError, isENOENT } from '../common.js';
 
 const logger = createLogger('FS');
 
 // Re-export shared utilities
 export { getErrorMessageShared as getErrorMessage };
+export { isENOENT };
 export const logError = createLogError(logger);