The Bridge's perf.py shelled out to its own root script (perf-audio) and ran a
watcher that reasserted its last choice every 30 s, on resume and on every
charger edge. gig-up armed it with 'standard' = --optimize = governor
performance, which pins EPP and runs every idle wakeup at 4-5 GHz. On
2026-09-23 it undid a Silent click from the GNOME panel within 31 s and held
the package at 96-100 C at ~5 % load all morning.

- MODES now name thermal-mode-apply arguments (silent, performance); set_mode
  runs the exact-args sudoers form; detect_mode reads /etc/thermal-mode.conf.
- run_watcher/reconcile/desired-file removed: thermal-mode-reassert.service
  already re-applies the persisted mode on resume and charger events.
- gig-up asserts thermal-mode performance (turbo on, powersave governor, EPP
  balance_performance, RT audio) instead of demanding governor=performance.
- rig-doctor and gig-preflight point at thermal-mode-apply, not perf-audio.