debug: disable BMS BLE during LilyGO AP bringup

firmware/esp32/overland-controller/config.h

@@ -30,3 +30,6 @@
 
 // Bring-up safety: serve a tiny root page to avoid AP client/browser heap crashes.
 #define LILYGO_BRINGUP_MINIMAL_WEB 1
+
+// LilyGO bring-up isolation: disable BLE/BMS to test WiFi AP stability.
+#define BMS_COMPILE_ENABLED 0

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

@@ -4097,7 +4097,11 @@ void setup() {
 
     initRelays();
     initSensors();
+#if BMS_COMPILE_ENABLED
     initBms();
+#else
+    Serial.println("BMS/BLE disabled for LilyGO bring-up test");
+#endif
 
     loadWifiConfig();
     loadApConfig();
@@ -4231,7 +4235,9 @@ void loop() {
     server.handleClient();
     maintainStaWifi();
     handleDebugSerial();
+#if BMS_COMPILE_ENABLED
     updateBms();
+#endif
     updateAlarms();
 #if DASHBOARD_UART_ENABLED
     pollDashboardUart();