Merge achamaikin/CCSModuleSW30Web upstream with fire alarm retained.

Take upstream board rev2, heater, and project cleanup; preserve fire alarm latch, CMD_FIRE_ALARM, and ESTOP maintenance logic.

Co-authored-by: Cursor <cursoragent@cursor.com>

Core/Inc/serial_control.h

@@ -1,13 +1,10 @@
-#ifndef SERIALCONTROL_H
-#define SERIALCONTROL_H
+#pragma once
 
 #include "main.h"
 #include <string.h>
 #include "charger_control.h"
 #include "isr_opt.h"
 
-#define USE_WEB_INTERFACE
-
 // Команды от ПК к устройству
 // Пакет статуса изоляции от отдельного блока по одностороннему UART
 #define CMD_ISOLATION_STATUS     0x01
@@ -182,5 +179,3 @@ extern StatusPacket_t statusPacket;
 extern InfoPacket_t infoPacket;
 extern IsolationStatusPacket_t ISO;
 extern volatile SC_Source_t g_sc_command_source;
-
-#endif // SERIALCONTROL_H