refactor: 对齐 DLD154V4B 规格和 M1H 参考

- 灵敏度表改为 M1H 值: {216,108,36,10} / {108,72,18,9}
- 时序参数对齐: OUT_DELAY 39→38, PULSE_DELAY 10→19
- LED 宏命名对齐 154V4B: LEDA=红(PB1), LEDB=绿(PA9), LEDC=黄(PA10)
- RLY1/RLY2 引脚交换: PA6=RLY1, PA5=RLY2

project/at32f421_board/at32f421_board.c

@@ -206,8 +206,9 @@ void loop_timer_io_init(void)
     gpio_init(GPIOA, &gpio_init_struct);
     
         
-    LEDA_OFF;
-    LEDC_OFF;
+    LEDA_OFF;   // 红灭
+    LEDB_OFF;   // 绿灭
+    LEDC_OFF;   // 黄灭
     RLY1_OFF;
     RLY2_OFF;