refactor: sync from template - ENABLE/DISABLE macro pattern

- board_config.h: replace #define/#undef with ENABLE/DISABLE constants
- All debug switches use ENABLE/DISABLE instead of define/undef
- Replace #ifdef with #if MACRO == ENABLE across all sources
- Sync updated README documentation

Src/command.c

@@ -101,7 +101,7 @@ void system_software_reset(void)
 }
 
 /* Debug output control */
-#ifdef COM_DEBUG
+#if COM_DEBUG == ENABLE
     #include <stdio.h>
     #define COMMAND_DEBUG(fmt, ...) printf("[COMMAND] " fmt "\n", ##__VA_ARGS__)
 #else
@@ -565,7 +565,7 @@ void command_process(void) {
             // 到帧尾，进行各项校验
             bool verification_status = true;
 
-            #ifdef DEBUG_VERBOSE
+            #if DEBUG_VERBOSE == ENABLE
             if (cmd_buf[0] != PROTOCOL_PACKAGE_HEADER) {
                 send_response(RESP_TYPE_HEADER_ERR, s_report_status_err, sizeof(s_report_status_err));
                 verification_status = false;