feat: add status screen with system info display

libraries/KlubhausCore/src/DoorbellLogic.cpp

@@ -354,6 +354,18 @@ int DoorbellLogic::handleTouch(const TouchEvent& evt) {
             return -1;
         }
 
+        // Handle STATUS screen back button (lower right corner)
+        if(_state.screen == ScreenID::STATUS) {
+            int dispW = _display->width();
+            int dispH = _display->height();
+            // Back button area: lower right (dispW-60 to dispW, dispH-30 to dispH)
+            if(evt.x >= dispW - 60 && evt.y >= dispH - 30) {
+                Serial.printf("[%lu] [TOUCH] STATUS → DASHBOARD (back)\n", millis());
+                setScreen(ScreenID::DASHBOARD);
+                return -1;
+            }
+        }
+
         // Draw debug crosshair at touch point
 #ifdef DEBUG_MODE
         if(_state.screen == ScreenID::DASHBOARD) {
@@ -380,7 +392,7 @@ int DoorbellLogic::handleTouch(const TouchEvent& evt) {
                             silenceAlert();
                         break;
                     case TileAction::STATUS:
-                        heartbeat();
+                        setScreen(ScreenID::STATUS);
                         break;
                     case TileAction::REBOOT:
                         flushStatus("REBOOT (tile)");

libraries/KlubhausCore/src/ScreenState.h

@@ -3,7 +3,7 @@
 
 enum class DeviceState { BOOTED, SILENT, ALERTING, SILENCED };
 
-enum class ScreenID { BOOT, OFF, ALERT, DASHBOARD };
+enum class ScreenID { BOOT, OFF, ALERT, DASHBOARD, STATUS };
 
 enum class BootStage { SPLASH, INIT_DISPLAY, INIT_NETWORK, CONNECTING_WIFI, READY, DONE };
 
@@ -94,6 +94,8 @@ inline const char* screenIdStr(ScreenID s) {
         return "ALERT";
     case ScreenID::DASHBOARD:
         return "DASHBOARD";
+    case ScreenID::STATUS:
+        return "STATUS";
     }
     return "?";
 }