UX: Live booking-field panel + TTS speech rules (v1.7.19)

FIX: Replace decommissioned playai-tts with Groq Orpheus TTS model

FEAT: Add privacy policy and terms of service for Google OAuth verification

FIX: Send session ID to /api/session-info for menu color updates

FEAT: Add session reset after booking + celebration redirect

UX: Add LLM_DEBUG environment variable to suppress verbose logging

PERF: Prevent token waste by detecting celebration phrases early

FIX: Smart error handling - alert developer, show success to user

FIX: Graceful error handling for event loop and connection failures

UPDATE: Switch landing page to use VoiceCal LinkedIn diagram

REBRAND: Update UI from ChatCal.ai to VoiceCal.ai

FEATURE: Add LinkedIn diagram and improve chat widget UX

FIX: Server-side format conversion for Groq STT compatibility

FIX: Add missing File, UploadFile imports for Groq STT endpoint

FEATURE: Groq STT Integration - Replace HuggingFace with Groq Whisper

UPDATE: Change default TTS voice from Fritz-PlayAI to Cheyenne-PlayAI

FIX: Groq TTS voice parameter validation and error handling

MAJOR: Replace Kyutai TTS with Groq TTS for improved performance and reliability

Add comprehensive backend debugging for email session storage

Simplify JavaScript regex patterns to avoid Python syntax warnings

Fix JavaScript regex syntax errors blocking page initialization

Add user email display to chat interface

Add email collection form to landing page with chat integration

Revert TTS client reuse to fix agent timeout issue

Optimize TTS performance with connection reuse and timing

Fix TTS audio serving - read files locally and serve via cache

Improve TTS audio proxy with multiple URL fallbacks

Fix TTS mixed content error - force HTTPS for audio URLs

Fix TTS 403 error - add audio proxy endpoint

Fix TTS response parsing - TTS is working, handle file paths correctly

Fix TTS: Use correct Gradio function name from source code

Fix TTS: Try multiple Gradio client endpoints with fallbacks

Fix TTS API endpoint - switch from Gradio predict to REST API

Fix TTS CORS issues with backend proxy endpoint

Add comprehensive logging and debugging utilities

Fix health check for JWT session backend

Initial VoiceCal.ai v1.0.0 deployment