A BLE-powered status light for Cursor Agent, using ESP32-C3 to visualize AI coding states such as thinking, busy, success, error, and waiting for user action. 基于 ESP32-C3 的 Cursor Agent BLE 状态灯，用红绿灯直观显示 AI 编程过程中的思考、忙碌、成功、错误以及等待用户操作 等状态。