v0.2.15

What's Changed

• Hotkey recovery: Added Settings -> Hotkey -> Reset Hotkey to
  Default so a bad or awkward custom hotkey can be returned to Right Option
  without recording a replacement.
• Hotkey recorder polish: The recorder now accepts additional F-keys and
  right-side modifiers, rejects unsafe typing keys, and has stronger
  self-test coverage for save, rollback, and listener restart paths.
• Speech model recovery guidance: Startup failures now distinguish likely
  interrupted/corrupt model caches from network/download failures and point
  to Support -> Reset Speech Model Cache... when that is the right
  recovery path.
• Unexpected-exit notice: On the next launch after an abnormal exit,
  Parakey offers to copy privacy-safe diagnostics or open the local log.
  Nothing is sent anywhere.
• Mute recovery: If Parakey crashes or is force-quit while it muted
  system audio for an active recording, a local watchdog now unmutes the Mac
  when the app process disappears. The next launch also repairs any stale
  mute marker.
• Audio capture hardening: Recording samples are accumulated in segments
  and flattened outside the audio lock, with added downmix/converter
  self-tests.
• Private benchmark tooling: Added redacted real-dictation regression and
  power benchmark helpers. Their reports redact transcript text, fixture
  names, and local paths by default, and CI now runs their self-tests.
• Release safety checks: Added a packaged-app smoke script that verifies
  resources, signing, entitlements, and packaged self-tests.

Manual Checks

• Run the signed-app hotkey and dictation smoke from docs/manual-qa.md.
• Run bench-power.sh once after sudo -v to validate the real
  powermetrics path on the release machine.