Migrate updater LAN and devkit features from old repo

src-tauri/proto/sensor_stream.proto

@@ -0,0 +1,49 @@
+syntax = "proto3";
+
+package sensor_stream;
+
+// 传感器数据推送服务 —— Rust 端作为 gRPC client 推送实时帧
+service SensorPush {
+  rpc Upload (stream SensorFrame) returns (UploadResponse);
+}
+
+// 导出后处理服务 —— Rust 导出 CSV 后将路径发给 Python 做梯度过滤
+service ExportProcessor {
+  rpc ProcessFile (ProcessRequest) returns (ProcessResponse);
+}
+
+// 一帧传感器数据
+message SensorFrame {
+  uint64 seq = 1;
+  uint64 timestamp_ms = 2;
+  uint32 rows = 3;
+  uint32 cols = 4;
+  repeated uint32 matrix = 5;
+  double resultant_force = 6;
+  uint32 dts_ms = 7;
+}
+
+// 上传确认响应
+message UploadResponse {
+  bool ok = 1;
+  uint64 frames_received = 2;
+  string message = 3;
+}
+
+// 导出处理请求
+message ProcessRequest {
+  string csv_path = 1;        // 导出的 CSV 文件路径
+  bool save_as_xlsx = 2;      // 是否以 xlsx 保存（删除源 CSV）
+}
+
+// 导出处理响应
+message ProcessResponse {
+  bool ok = 1;
+  string output_path = 2;     // 输出文件路径
+  uint32 groups_used = 3;     // 分组数
+  double mean_value = 4;      // 均值
+  double threshold = 5;       // 梯度阈值
+  uint32 rows_total = 6;      // 原始行数
+  uint32 rows_kept = 7;       // 保留行数
+  string message = 8;
+}