- Unified key_engine_tick and key events on Core 0 with recursive mutex to eliminate stuck key race conditions
- Added HID hardware report mutex lock in usb_composite to ensure 100% reliable report delivery
- Fixed RGB LED logic: solid red on disconnect, solid green on standby, solid blue on voice record, yellow flash on HID press
- Removed UAC endpoint enumeration false blue-light trigger
- Implemented LED indicator feature (24 brightness)
- Migrated UAC microphone to hardware xfer_cb (fixed endpoint collision)
- Rolled back ATVV strict 0x03 check to prevent infinite ping-pong loop
- Rolled back HOGP keyboard release to fix modifier sticky keys
- Rolled back Volume keys to TAP with repeat to preserve stability