reset to pre-modification baseline; restart feature work from clean state

Restoring the working tree to the pristine pre-Claude baseline previously
preserved at /data/clearpilot (now /data/clearpilot-baseline). The prior
modified-but-broken tree is snapshotted at /data/openpilot-broken-2026-05-03
and tagged here as pre-reset-2026-05-03 for reference.

From here, features (UI changes, dashcam, telemetry, GPS, display modes,
speed logic, standstill power saving, etc.) will be re-introduced one at
a time with proper testing.

selfdrive/ui/ui.h

@@ -231,7 +231,6 @@ typedef struct UIScene {
   bool road_name_ui;
   bool rotating_wheel;
   bool screen_recorder;
-  bool screen_recorder_debug;
   bool show_aol_status_bar;
   bool show_cem_status_bar;
   bool show_jerk;