debug: clean LilyGO setup isolation baseline

firmware/esp32/overland-controller/overland-controller.ino

@@ -1,4 +1,5 @@
 #include <WiFi.h>
+#include <esp_heap_caps.h>
 #include <WebServer.h>
 #include <Preferences.h>
 #include <esp_wifi.h>
@@ -4067,8 +4068,63 @@ void handleStatus() {
     server.send(200, "application/json", output);
 }
 
+
+void heapCheckpoint(const char* label) {
+    Serial.print("HEAP CHECK ");
+    Serial.print(label);
+    Serial.print(" free=");
+    Serial.print(ESP.getFreeHeap());
+    Serial.print(" min=");
+    Serial.println(ESP.getMinFreeHeap());
+
+    if (!heap_caps_check_integrity_all(true)) {
+        Serial.print("HEAP CORRUPTION DETECTED AT: ");
+        Serial.println(label);
+        while (true) delay(1000);
+    }
+}
+
+
 void setup() {
     Serial.begin(115200);
+    delay(2000);
+
+    Serial.println();
+    Serial.println("LilyGO clean isolation: config+relays+sensors+wifi+bare server");
+
+    heapCheckpoint("setup:start");
+
+    loadConfig();
+    heapCheckpoint("after:loadConfig");
+
+    printConfig();
+
+    initRelays();
+    heapCheckpoint("after:initRelays");
+
+    initSensors();
+    heapCheckpoint("after:initSensors");
+
+    loadWifiConfig();
+    heapCheckpoint("after:loadWifiConfig");
+
+    loadApConfig();
+    heapCheckpoint("after:loadApConfig");
+
+    WiFi.persistent(false);
+    WiFi.setSleep(false);
+    WiFi.mode(WIFI_AP);
+
+    startAccessPoint();
+    heapCheckpoint("after:startAccessPoint");
+
+    server.begin();
+    Serial.println("Bare WebServer started");
+    heapCheckpoint("setup:end");
+}
+
+void originalProjectSetupDisabled() {
+    Serial.begin(115200);
 
 #if DASHBOARD_UART_ENABLED
     DashboardSerial.begin(
@@ -4183,20 +4239,9 @@ void setup() {
 
 void loop() {
     server.handleClient();
-    maintainStaWifi();
-    handleDebugSerial();
-    updateBms();
-    updateAlarms();
 #if DASHBOARD_UART_ENABLED
     pollDashboardUart();
 #endif
-    oledLoop();
-
-    static unsigned long lastSensorUpdate = 0;
-
-    if (millis() - lastSensorUpdate > 5000) {
-        updateSensors();
-        lastSensorUpdate = millis();
-        logDebug("Sensor Update");
-    }
+    delay(2);
 }
+