fix: Resolve syntax error in WebSocket retry logic

feat: Add comprehensive WebSocket retry logic with GPU cold start timing calibration

feat: Add STT service preload to prevent cold start delays

fix: Resolve Gradio client FileData validation error

fix: Improve Gradio client STT endpoint discovery

fix: Always initialize WebSocket URLs regardless of MCP status

debug: Add WebSocket URL availability debugging to STT service

fix: Implement correct WebSocket STT protocol and SSL handling

feat: Add comprehensive WebSocket STT debugging

fix: Improve MCP fallback logic for STT service connection

debug: Add audio debugging to trace 'Thank you very much' source v0.6.1

feat: Remove all demo simulation code - REAL STT ONLY v0.6.0

fix: Improve WebSocket stability and prevent spinning v0.5.10

feat: Add WebSocket STT integration with unmute.sh methodology v0.5.6

feat: Deploy complete VoiceCal application with all files v0.5.6