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.

cereal/custom.capnp

@@ -12,9 +12,6 @@ struct FrogPilotCarControl @0x81c2f05a394cf4af {
   alwaysOnLateral @0 :Bool;
   speedLimitChanged @1 :Bool;
   trafficModeActive @2 :Bool;
-  # CLEARPILOT: migrated from paramsMemory to avoid file-read syscalls in modeld/UI/carcontroller
-  latRequested @3 :Bool;        # controlsd's request to enable lat before ramp-up delay
-  noLatLaneChange @4 :Bool;     # lat is temporarily suppressed during a lane change
 }
 
 struct FrogPilotCarState @0xaedffd8f31e7b55d {