feat: implement Tone.js for professional audio transmit and listen
- Replace AudioWorkletNode with Tone.UserMedia for microphone capture - Use Tone.Analyser for waveform analysis and Tone.Meter for level detection - Implement proper stereo audio capture with real-time PCM transmission - Use Tone.context for audio playback with proper buffer handling - Add Tone.js CDN to HTML template - Convert dashboard.js to ES module for Tone.js import - Improve audio quality and reliability with battle-tested library
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