Issue 1: tapping Space in the PTT binding capture dialog set
_captured to LogicalKeyboardKey.space.keyLabel which is ' ' (a single
space character), rendering as a blank string in the 'Captured: '
display. Same problem for Enter, Tab, Backspace, etc. — Flutter's
keyLabel returns the printable representation, not a readable name.
Added _displayLabelForKey() with a table that maps whitespace and
common special keys to canonical English labels matching the
entries in crates/chanora_audio/src/ptt_backends/windows_keymap.rs
(so the bridge resolves to the right VK_* on Windows). Pure
modifier keys (shift / ctrl / alt / meta / caps / num / scroll
lock) return null so they don't accidentally bind on their own.
Issue 2: physical key press -> 'PTT=on' in the Voice Bar lagged by
up to ~500 ms because audioStats was polled at 500 ms intervals.
The Rust-side transition is microsecond-fast; the visible delay is
purely the Flutter poll interval. Cut to 80 ms (~12 Hz), well below
the perceptual lag threshold. Adds ~12 small FFI calls per second,
trivially cheap. A push-based BridgeEvent::TransmitActiveChanged
would let us drop the poll entirely; noted as a follow-up.
flutter analyze: clean (6 pre-existing Radio.groupValue infos).
EdisonJwa
7596f8a9dc