chore: 导入 Simba-OmniInfantry 基线(云台/底盘双工程)

- 云台(ROBOT_TYPE_GIMBAL)与底盘(ROBOT_TYPE_CHASSIS)完整固件源码
- 新增根级 .gitignore,排除 Keil MDK-ARM 构建产物(.o/.d/.crf/.axf/.lnp/.map/.htm/.sct/.dep/.iex/.lst 等)
  与 *.uvguix.* / DebugConfig/(与机器绑定的 UI 布局)
- core.autocrlf=false,避免固件源码在检出时被改动换行符

底盘/modules/BUZZER/buzzer.h

@@ -0,0 +1,19 @@
+#ifndef BUZZER_H
+#define BUZZER_H
+
+#include <stdint.h>
+
+/* C 板无源蜂鸣器(TIM4_CH3, PD14),音调表与 legacy 完全一致 */
+
+typedef enum
+{
+    BUZZER_P = 0,  // 空拍
+    BUZZER_L1, BUZZER_L1_, BUZZER_L2, BUZZER_L2_, BUZZER_L3, BUZZER_L4, BUZZER_L4_, BUZZER_L5, BUZZER_L5_, BUZZER_L6, BUZZER_L6_, BUZZER_L7,  // 低音
+    BUZZER_M1, BUZZER_M1_, BUZZER_M2, BUZZER_M2_, BUZZER_M3, BUZZER_M4, BUZZER_M4_, BUZZER_M5, BUZZER_M5_, BUZZER_M6, BUZZER_M6_, BUZZER_M7,  // 中音
+    BUZZER_H1, BUZZER_H1_, BUZZER_H2, BUZZER_H2_, BUZZER_H3, BUZZER_H4, BUZZER_H4_, BUZZER_H5, BUZZER_H5_, BUZZER_H6, BUZZER_H6_, BUZZER_H7,  // 高音
+} buzzer_tone_e;
+
+extern void buzzer_init(void);
+extern void buzzer_on(buzzer_tone_e tone);
+extern void buzzer_off(void);
+#endif