fix: add missing frontend dependencies and remove trailing whitespace

- Add @tanstack/react-query, axios, and clsx to frontend dependencies
- Remove trailing whitespace from multiple files to pass pre-commit hooks
- These were required but missing from package.json

frontend/src/hooks/useImport.ts

@@ -69,7 +69,7 @@ export function useImport() {
 
   const commit = async (resolutions: Record<string, string>) => {
     if (!session) throw new Error('No active session')
-    
+
     try {
       setLoading(true)
       setError(null)
@@ -87,7 +87,7 @@ export function useImport() {
 
   const cancel = async () => {
     if (!session) return
-    
+
     try {
       setLoading(true)
       setError(null)