Mic routing: Reduce latency

[akonopcz]

Problem

Current ring buffer is sized for 1 second at 48kHz stereo (96000 samples). This may introduce noticeable latency in voice communication.

Current Behavior

• Ring buffer: 48000 * 2 = 96000 samples
• At 48kHz stereo, this is ~1 second of audio
• Latency could be perceptible in real-time conversation

Proposed Solution

• Reduce buffer size to ~50-100ms (4800-9600 samples at 48kHz)
• Implement proper buffer fill level monitoring
• Add latency configuration option in settings

Files

src-tauri/src/vbcable/microphone.rs