Remove install-specific names from config and API docs

firmware/esp32/xterra-controller/bms.cpp

@@ -3,8 +3,9 @@
 #include <Arduino.h>
 #include <NimBLEDevice.h>
 #include "logger.h"
+#include "app_config.h"
 
-static const char* BMS_ADDRESS = "a5:c2:37:2c:05:dc";
+// BMS address is loaded from appConfig.bms.address.
 static const char* BMS_SERVICE_UUID = "ff00";
 static const char* BMS_NOTIFY_UUID = "ff01";
 static const char* BMS_WRITE_UUID = "ff02";
@@ -300,7 +301,15 @@ static bool connectBms() {
 
     Serial.println("BMS: Connecting...");
 
-    NimBLEAddress address(std::string(BMS_ADDRESS), BLE_ADDR_PUBLIC);
+    if (!appConfig.bms.enabled || appConfig.bms.address.length() == 0) {
+        bmsData.connected = false;
+        return false;
+    }
+
+    NimBLEAddress address(
+        std::string(appConfig.bms.address.c_str()),
+        appConfig.bms.addressType == "random" ? BLE_ADDR_RANDOM : BLE_ADDR_PUBLIC
+    );
 
     client = NimBLEDevice::createClient();