v2.3.0

Added

• Diagnostics row. New surface in the menu directly below the header
  that aggregates active warnings/errors (paused state, missing
  Input Monitoring permission, sensor errors). Hidden when no
  diagnostics are active. The "paused" indicator that previously sat
  inside the top header row moved here so the header is back to a clean
  2x2 grid (title | impacts; subtext | last-impact).
• Input Monitoring permission sentinel. Yamete now consults
  IOHIDCheckAccess at launch and on app foreground. When permission
  is missing (most commonly because make install's ad-hoc resign
  changed the bundle's cdhash and macOS silently revoked the prior
  grant), the diagnostics row surfaces "Input Monitoring required" with
  an "Open System Settings…" button that deep-links to the Privacy &
  Security pane. The previous failure mode was silent — no mouse clicks,
  no keyboard typing, no Caps Lock LED, with only a single warn-level
  log line as evidence.
• InputMonitoringAccess helper (Sources/YameteCore/)
  consolidates the three previously-inline TCC checks
  (MouseActivitySource, KeyboardActivitySource,
  RealLEDBrightnessDriver) onto a single status() /
  requestIfUnknown() API. Sources never prompt; only
  Yamete.bootstrap() does, matching macOS's "one prompt per process
  lifetime" semantics.
• Active output only toggle for audio. Mirrors the existing
  active-display-only toggle: when on, impact sounds route to the
  system default audio device only, ignoring the per-device selection.
  Hidden when ≤1 audio device is selected (same gating rule applied
  to the active-display-only toggle for consistency). Useful when the
  user wants the sound to follow "wherever I'm listening right now"
  instead of fanning out across configured outputs.
• Audio transport class tagging. Each audio output row in the
  menu now renders an icon derived from
  kAudioDevicePropertyTransportType: laptopcomputer for built-in
  speakers, tv for DisplayPort/HDMI, cable.connector for USB,
  headphones.bluetooth for wireless, headphones for analog jack,
  bolt.horizontal for Thunderbolt, hifispeaker otherwise. Lets the
  user tell at a glance which outputs are monitor speakers vs USB
  headsets vs wireless devices.
• EDID-based monitor↔speaker pairing. Audio devices that ride on a
  display's video cable (DisplayPort, HDMI, MacBook built-in) now get
  paired to the display they belong to. The pairing reads the standard
  EDID identifier triple (vendor, product, serial) from the audio
  device's IORegistry ancestors and matches against
  CGDisplayVendorNumber/ModelNumber/SerialNumber. Built-in
  speakers pair structurally to whatever display reports
  CGDisplayIsBuiltin == 1. Audio rows render an "attached to "
  footnote when pairing succeeds. See
  docs/architecture/display-audio-pairing
  for failure modes (USB-C docks, KVMs, adapter chains, monitors with
  zero-EDID-serial).

Changed

• AppleSPUDevice lifecycle race fix. The multi-subscriber broker
  for the SPU HID device serialised concurrent open/close transitions
  through a new transitionLock. Previous behaviour: when the four
  initial subscribers (accel, gyro, ALS, lid) raced into the
  refcount-zero open path, the loser's cleanup called
  SensorActivation.deactivate() on the winner's still-live session,
  killing the report stream after one report and tripping the 5-second
  watchdog. The fix eliminates the race-loser teardown path entirely;
  there is now exactly one IOKit lifecycle operation in flight at a
  time across the broker. New regression test
  testConcurrentSubscribes_openDeviceCalledExactlyOnce pins the
  invariant.
• Active-display-only toggle visibility. The toggle now only
  renders when ≥2 displays are selected. With 0 or 1 displays
  selected the toggle adds no signal and was UI noise. The audio
  side gets the same treatment.
• Header layout simplification. The top bar's centre column
  (which held the conditional "Paused" pill) is gone. Header is now a
  clean 2x2: title and impacts counter on the first row, rotating
  subtext and last-impact tier on the second. The paused indicator
  surfaces in the diagnostics row instead.

Fixed

• MainActor mentions in commit messages and prose. All future
  mentions in markdown / prose contexts use MainActor without the
  @ prefix to avoid GitHub's @-mention parser indexing an unrelated
  user. Source code (*.swift) keeps the @MainActor attribute as
  required by the Swift compiler.

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SHA256: 29c4d0e6a87a8f5ca23fc2a71166de6e7cbf48996a63be55d00f7fddc2a81ee2