feat(doorbell): add staged boot sequence and refactor main loop

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

@@ -17,7 +17,10 @@ void DisplayDriverTFT::begin() {
     Serial.printf("[TOUCH] Raw Z=%d (non-zero = controller detected)\n", z);
     Serial.flush();
 
-    drawBoot();
+    ScreenState st;
+    st.screen = ScreenID::BOOT;
+    st.bootStage = BootStage::SPLASH;
+    drawBoot(st);
 
     digitalWrite(PIN_LCD_BL, HIGH);
     Serial.println("[GFX] Backlight ON");
@@ -29,15 +32,16 @@ void DisplayDriverTFT::setBacklight(bool on) { digitalWrite(PIN_LCD_BL, on ? HIG
 // ── Rendering ───────────────────────────────────────────────
 
 void DisplayDriverTFT::render(const ScreenState& st) {
-    if(st.screen != _lastScreen) {
+    if(st.screen != _lastScreen || (st.screen == ScreenID::BOOT && st.bootStage != _lastBootStage)) {
         _needsRedraw = true;
         _lastScreen = st.screen;
+        _lastBootStage = st.bootStage;
     }
 
     switch(st.screen) {
     case ScreenID::BOOT:
         if(_needsRedraw) {
-            drawBoot();
+            drawBoot(st);
             _needsRedraw = false;
         }
         break;
@@ -60,7 +64,9 @@ void DisplayDriverTFT::render(const ScreenState& st) {
     }
 }
 
-void DisplayDriverTFT::drawBoot() {
+void DisplayDriverTFT::drawBoot(const ScreenState& st) {
+    BootStage stage = st.bootStage;
+
     _tft.fillScreen(TFT_BLACK);
     _tft.setTextColor(TFT_WHITE, TFT_BLACK);
     _tft.setTextSize(2);
@@ -69,8 +75,29 @@ void DisplayDriverTFT::drawBoot() {
     _tft.setTextSize(1);
     _tft.setCursor(10, 40);
     _tft.print(BOARD_NAME);
-    _tft.setCursor(10, 60);
-    _tft.print("Booting...");
+
+    // Show boot stage status
+    _tft.setCursor(10, 70);
+    switch(stage) {
+    case BootStage::SPLASH:
+        _tft.print("Initializing...");
+        break;
+    case BootStage::INIT_DISPLAY:
+        _tft.print("Display OK");
+        break;
+    case BootStage::INIT_NETWORK:
+        _tft.print("Network init...");
+        break;
+    case BootStage::CONNECTING_WIFI:
+        _tft.print("Connecting WiFi...");
+        break;
+    case BootStage::READY:
+        _tft.print("All systems go!");
+        break;
+    case BootStage::DONE:
+        _tft.print("Ready!");
+        break;
+    }
 }
 
 void DisplayDriverTFT::drawAlert(const ScreenState& st) {

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

@@ -19,7 +19,7 @@ public:
     int height() override { return DISPLAY_HEIGHT; }
 
 private:
-    void drawBoot();
+    void drawBoot(const ScreenState& st);
     void drawAlert(const ScreenState& st);
     void drawDashboard(const ScreenState& st);
 
@@ -28,5 +28,6 @@ private:
     bool _holdActive = false;
     uint32_t _holdStartMs = 0;
     ScreenID _lastScreen = ScreenID::BOOT;
+    BootStage _lastBootStage = BootStage::SPLASH;
     bool _needsRedraw = true;
 };

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

@@ -21,55 +21,29 @@ void setup() {
 }
 
 void loop() {
-    // ── Read touch ──
+    // Read touch
     TouchEvent evt = display.readTouch();
 
-    // ── Touch debug ──
+    // 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 ──
+    // State machine tick
     logic.update();
 
-    // ── Render current screen ──
+    // Render current screen
     display.render(logic.getScreenState());
 
-    // ── Touch handling (tap gestures) ──
-    const ScreenState& st = logic.getScreenState();
-    int tile = logic.handleTouch(evt);
+    // Handle tap gestures
+    logic.handleTouch(evt);
 
-    // ── Hold gesture (for silencing alerts) ──
-    static int holdStartX = -1;
-    static int holdStartY = -1;
+    // Handle hold-to-silence gesture
+    logic.updateHold(evt);
 
-    if(st.deviceState == DeviceState::ALERTING) {
-        HoldState h = display.updateHold(HOLD_TO_SILENCE_MS);
-        if(h.completed) {
-            logic.silenceAlert();
-            holdStartX = -1;
-            holdStartY = -1;
-        }
-        if(h.started) {
-            holdStartX = evt.x;
-            holdStartY = evt.y;
-        }
-        if(holdStartX >= 0) {
-            display.updateHint(holdStartX, holdStartY, h.active);
-        }
-    } else {
-        holdStartX = -1;
-        holdStartY = -1;
-    }
+    // Serial console
+    logic.processSerial();
 
-    // ── Serial console ──
-    if(Serial.available()) {
-        String cmd = Serial.readStringUntil('\n');
-        cmd.trim();
-        if(cmd.length() > 0)
-            logic.onSerialCommand(cmd);
-    }
-
-    // Yield to WiFi/BT stack (prevents Task Watchdog timeout)
-    delay(10);
-}
+    // Yield to WiFi/BT stack
+    delay(LOOP_YIELD_MS);
+}