fix: debug button screen-off mode now works in park state

updateWakefulness was overriding display power every frame when ignition
was on, fighting the screen-off set by home.cc. Now respects
ScreenDisplayMode 3 unconditionally. Also auto-resets to mode 0 when
shifting into drive from screen-off.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

selfdrive/controls/controlsd.py

@@ -204,6 +204,7 @@ class Controls:
     self.always_on_lateral_main = self.always_on_lateral and self.params.get_bool("AlwaysOnLateralMain")
 
     self.drive_added = False
+    self.was_driving_gear = False
     self.fcw_random_event_triggered = False
     self.holiday_theme_alerted = False
     self.onroad_distance_pressed = False
@@ -1263,6 +1264,12 @@ class Controls:
       self.events.add(EventName.clpDebug)
 
   def clearpilot_state_control(self, CC, CS):
+    # CLEARPILOT: auto-reset display when shifting into drive from screen-off
+    if self.driving_gear and not self.was_driving_gear:
+      if self.params_memory.get_int("ScreenDisplayMode") == 3:
+        self.params_memory.put_int("ScreenDisplayMode", 0)
+    self.was_driving_gear = self.driving_gear
+
     if any(be.pressed and be.type == FrogPilotButtonType.lkas for be in CS.buttonEvents):
       current = self.params_memory.get_int("ScreenDisplayMode")
 

selfdrive/ui/ui.cc

@@ -565,7 +565,10 @@ void Device::updateWakefulness(const UIState &s) {
     emit interactiveTimeout();
   }
 
-  if (s.scene.screen_brightness_onroad != 0) {
+  // CLEARPILOT: ScreenDisplayMode 3 = screen off — override awake state
+  if (paramsMemory.getInt("ScreenDisplayMode") == 3) {
+    setAwake(false);
+  } else if (s.scene.screen_brightness_onroad != 0) {
     setAwake(s.scene.ignition || interactive_timeout > 0);
   } else {
     setAwake(interactive_timeout > 0);