- Add /api/groq-tts route to handle TTS requests directly in Next.js
- Add /api/groq-tts/voices endpoint for listing available voices
- Remove groq-tts-proxy.py Python server dependency
- Remove authentication system (auth route, middleware, lib)
- Simplify startup script to only run the Next.js app
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>