fix: Try multiple HF Spaces API endpoint patterns v0.3.29

fix: Resolve syntax error in audio_handler.py v0.3.28

feat: Replace Gradio Client with direct HTTP API calls v0.3.27

fix: Improve STT connection handling and enhance demo mode v0.3.26

debug: Add initialization debugging and focus on STT-first mode v0.3.25

debug: Add comprehensive audio processing debugging v0.3.24

fix: Configure STT/TTS service URLs and improve audio client logging v0.3.23

feat: Initial ChatCal Voice-Enabled Assistant v0.1.0