Leshy Tuner - Recent Changes

Improve tuner accuracy and stability for real-world playing and singing.
Reduce note jumpiness so readings stay steadier once a pitch is detected.
Improve note transitions so the tuner is less likely to switch to the wrong note during changes in pitch.
Improve handling of weak or noisy input, with more reliable behavior when sound drops in and out.
Improve support for microphone access in modern browsers.
Improve handling of microphone permission problems.
Update on-page guidance to reflect current browser microphone support instead of older Chrome-only instructions.
Add support for tuning behavior presets (not exposed yet).