Claude 8076ed5a48 Replace rodio with cpal for AudioSink ...

- Replace rodio dependency with cpal in pmoaudio/Cargo.toml
- Add AudioSink node using cpal for direct hardware access
- Add SharedBuffer for async/callback communication
- Convert all audio formats to F32 for cpal
- Improve latency and control over audio stream
- Add WHY_CPAL.md explaining the technical choice
- Update INSTALL_NOTES.md with ALSA requirements
- Export AudioSink in lib.rs and mod.rs

Benefits:
- Minimal latency (no extra layers)
- Direct hardware control
- Lighter binary (~3.8 MB less)
- Same ALSA dependency as rodio on Linux
- Cross-platform (ALSA/JACK on Linux, CoreAudio on macOS, WASAPI on Windows)

2025-11-05 18:04:08 +00:00

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