add deploy button on README

update README for better readability and maintainability

Update README.md for clarity on deployment steps and enhance index.html for improved tab navigation and user experience

Refactor server.py and update index.html

Improve Telegram user ID input instructions and enhance custom model synchronization in index.html

Enhance provider interface in index.html

update index.html to improve API key handling and add model selection functionality for providers.

Update .env.example and README for clarity; enhance server.py to ensure gateway starts on first request

Add EXPOSE and remove healthcheckPath from railway.toml

first commit