Remove YouTube input from frontend to avoid network issues

Remove YouTube functionality completely - file upload only

Fix read-only filesystem error by using environment variables for DNS config

Add comprehensive network fixes and fallback methods for YouTube downloads

Fix logger error and network timeout issues

Fix DNS resolution and network connectivity for YouTube downloads

Add comprehensive file search and fallback download for YouTube videos

Fix downloaded file not found with enhanced search logic and debugging

Fix NoneType error in YouTube downloader with better error handling

fix bug

Fix YouTube download DNS issues and file permission errors

first commit