Cherry-picks ONLY the two separable good features from the withdrawn
v0.6.11 (commit 71cead4) — the `controller_wakes_display` (CtrlWake /
OLED-sleep-while-playing) toggle and `screen_brightness` persistence —
onto the verified-working native-trigger build.
The v0.6.11 regressions are intentionally NOT carried over:
- 71cead4's state_mgr.cpp trigger-FFB allow-bit mirror (#11 suspect)
- all of 84393c0's audio resampler retiming + config audio-defaults
+ chunked-SPI flush (#12 suspect)
Touches only src/config.{h,cpp} and src/oled.cpp, so the trigger and
audio code paths compile byte-identical to the tested firmware and
cannot regress. Two new Config_body fields append at the struct tail
(erased flash -> clamped to defaults by config_valid, clean upgrade).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
