refactor(display): extract tile layout logic to library helper class

boards/esp32-32e-4/DisplayDriverTFT.cpp

@@ -1,4 +1,7 @@
 #include "DisplayDriverTFT.h"
+#include <KlubhausCore.h>
+
+extern DisplayManager display;
 
 void DisplayDriverTFT::begin() {
     // Backlight
@@ -134,25 +137,19 @@ void DisplayDriverTFT::drawDashboard(const ScreenState& st) {
     _tft.setCursor(DISPLAY_WIDTH - 50, 5);
     _tft.printf("WiFi:%s", st.wifiSsid.length() > 0 ? "ON" : "OFF");
 
-    // Render tiles via DisplayManager (abstracted to library)
-    // For now, draw directly using our tile implementation
-    constexpr int cols = 2;
-    constexpr int rows = 2;
-    constexpr int tileW = DISPLAY_WIDTH / cols;
-    constexpr int tileH = (DISPLAY_HEIGHT - 30) / rows;
-    constexpr int margin = 8;
+    // Get tile layouts from library helper
+    int tileCount = display.calculateDashboardLayouts(30, 8);
+    const TileLayout* layouts = display.getTileLayouts();
 
     const char* tileLabels[] = { "Alert", "Silent", "Status", "Reboot" };
     const uint16_t tileColors[] = { 0x0280, 0x0400, 0x0440, 0x0100 };
 
-    for(int i = 0; i < 4; i++) {
-        int col = i % cols;
-        int row = i / cols;
-
-        int x = col * tileW + margin;
-        int y = 30 + row * tileH + margin;
-        int w = tileW - 2 * margin;
-        int h = tileH - 2 * margin;
+    for(int i = 0; i < tileCount && i < 4; i++) {
+        const TileLayout& lay = layouts[i];
+        int x = lay.x;
+        int y = lay.y;
+        int w = lay.w;
+        int h = lay.h;
 
         // Tile background
         _tft.fillRoundRect(x, y, w, h, 8, tileColors[i]);
@@ -180,7 +177,6 @@ TouchEvent DisplayDriverTFT::readTouch() {
         evt.pressed = true;
         evt.x = tx;
         evt.y = ty;
-        Serial.printf("[TOUCH] x=%d, y=%d\n", tx, ty);
     }
     return evt;
 }
@@ -196,22 +192,6 @@ void DisplayDriverTFT::transformTouch(int* x, int* y) {
     *y = temp;
 }
 
-void DisplayDriverTFT::drawTileAt(int x, int y, int w, int h, const char* label, uint16_t bgColor) {
-    // Tile background
-    _tft.fillRoundRect(x, y, w, h, 8, bgColor);
-
-    // Tile border
-    _tft.drawRoundRect(x, y, w, h, 8, TFT_WHITE);
-
-    // Tile label
-    _tft.setTextColor(TFT_WHITE);
-    _tft.setTextSize(2);
-    int textLen = strlen(label);
-    int textW = textLen * 12; // approx width
-    _tft.setCursor(x + w/2 - textW/2, y + h/2 - 10);
-    _tft.print(label);
-}
-
 HoldState DisplayDriverTFT::updateHold(unsigned long holdMs) {
     HoldState h;
     TouchEvent t = readTouch();

boards/esp32-32e-4/DisplayDriverTFT.h

@@ -14,12 +14,11 @@ public:
     uint16_t getRawTouchZ();
     HoldState updateHold(unsigned long holdMs) override;
     void updateHint(int x, int y, bool active) override;
-    int width() override { return DISPLAY_WIDTH; }
-    int height() override { return DISPLAY_HEIGHT; }
+    int width() override { return _tft.width(); }
+    int height() override { return _tft.height(); }
 
-    // Dashboard tiles - library handles grid math, we just draw
+    // Dashboard - uses transform for touch coordinate correction
     void transformTouch(int* x, int* y) override;
-    void drawTileAt(int x, int y, int w, int h, const char* label, uint16_t bgColor) override;
 
 private:
     void drawBoot(const ScreenState& st);

boards/esp32-32e-4/esp32-32e-4.ino

@@ -24,11 +24,6 @@ void loop() {
     // Read touch
     TouchEvent evt = display.readTouch();
 
-    // Touch debug (useful for new boards)
-    if(evt.pressed) {
-        Serial.printf("[TOUCH] pressed: x=%d, y=%d\n", evt.x, evt.y);
-    }
-
     // State machine tick
     logic.update();