Extends the firmware's 0xFD vendor feature report from 32 to 44 bytes
to carry the three host -> dongle -> BT trigger counters added in
5da1be4 (host_out02_total / host_out02_trig_allow / host_out02_to_bt).
mic_diag.sh's bt-trace decoder reads them and prints a one-line
verdict so the user can triage issue #3 in one terminal command
instead of switching to the OLED Diagnostics screen mid-game.
Verdicts encoded:
host02 > 0, trig == 0 -> host driver never sets the trigger
Allow bits; not a firmware problem.
trig > 0, tx < trig -> trigger Allow bits arrive but the
speaker-active gate in main.cpp
swallowed them.
full chain populated -> dongle delivered, controller didn't
actuate; Sony BT-side limit.
The 0xFD report ID stays undeclared in the HID descriptor — Linux
hidraw ioctls don't enforce that and WebHID never sees these reports
(config goes through 0xF6). bt-trace's IOCTL_SIZE bumped to 45
(1 byte for the kernel-prepended report ID + 44 bytes payload).
Docs:
README.md - new "Diagnostics & debug tooling" section walks
through the four mic_diag.sh subcommands; previously
the script was only mentioned inside
BLUETOOTH_AUDIO_NOTES.md.
README.md - Diagnostics-screen description updated for the
scrolling row-list + cross-link to bt-trace.
CLAUDE.md - "Where features live" gets a host-side-diagnostics
entry explaining how to extend the 0xFD payload and
wire it into bt-trace's decoder.
CHANGELOG - records both the firmware extension and the README
discoverability fix.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
