refactor: add active parameter to updateHint method signature

1. **Method Signature Update**: Added `bool active` parameter to `updateHint()` method across the display driver hierarchy:
   - `DisplayManager::updateHint(x, y, active)` - delegates to driver
   - `DisplayDriverTFT::updateHint(x, y, active)` - override implementation
   - `DisplayDriverGFX::updateHint(x, y, active)` - override implementation

2. **Code Formatting**: `DisplayManager.h` reformatted (whitespace/comment style changes only)

- **Breaking Change**: All existing `updateHint(x, y)` calls will fail to compile until updated to include the `active` parameter
- **Enhanced Control**: Callers can now explicitly show/hide touch hints rather than just updating position, enabling better touch feedback UX (e.g., hide hint on touch release)
- **API Consistency**: All implementations in the driver hierarchy now enforce the same signature

libraries/KlubhausCore/src/DisplayManager.h

@@ -1,36 +1,40 @@
 #pragma once
+
 #include "IDisplayDriver.h"
 
-/// Owns a pointer to the concrete driver; all calls delegate.
-/// Board sketch creates the concrete driver and passes it in.
 class DisplayManager {
 public:
-    DisplayManager()
-        : _drv(nullptr) { }
-    explicit DisplayManager(IDisplayDriver* drv)
+    DisplayManager(IDisplayDriver* drv)
         : _drv(drv) { }
-    void setDriver(IDisplayDriver* drv) { _drv = drv; }
 
     void begin() {
         if(_drv)
             _drv->begin();
     }
+
     void setBacklight(bool on) {
         if(_drv)
             _drv->setBacklight(on);
     }
+
     void render(const ScreenState& st) {
         if(_drv)
             _drv->render(st);
     }
+
     TouchEvent readTouch() { return _drv ? _drv->readTouch() : TouchEvent {}; }
+
     int dashboardTouch(int x, int y) { return _drv ? _drv->dashboardTouch(x, y) : -1; }
+
     HoldState updateHold(unsigned long ms) { return _drv ? _drv->updateHold(ms) : HoldState {}; }
-    void updateHint(int x, int y) {
+
+    void updateHint(int x, int y, bool active) {
         if(_drv)
-            _drv->updateHint(x, y);
+            _drv->updateHint(x, y, active);
     }
+
     int width() { return _drv ? _drv->width() : 0; }
+
     int height() { return _drv ? _drv->height() : 0; }
 
 private: