Fix import error: move AuthResult and User imports to module level

Implement clean OAuth login with gr.LoginButton and improve UI design

Add comprehensive .gitignore file and remove cached Python bytecode

Implement official HuggingFace Hub authentication and remove offline mode

Fix all hardcoded Kyutai model identifiers across codebase

🥚 Initial DigiPal deployment to HuggingFace Spaces🤖 Generated with [Claude Code](https://claude.ai/code)Co-Authored-By: Claude <noreply@anthropic.com>