fix: 修复编译错误 + cargo check 通过

- Recorder::new() 需要 RecordingMode 参数 → 改用 Recorder::full()
- export_path 借用问题 → clone 后传入 import_csv
- Result 未处理警告 → 添加 let _ =
- 安装 pkg-config + libudev-dev 系统依赖
- 配置 USTC cargo 国内镜像源

src/app.rs

@@ -12,7 +12,7 @@ use crate::{
     ui::{
         ConfigPanelState, ConnectPanelState, FloatingPanelState, MatrixConfigState,
         draw_config_panel, draw_connect_panel, draw_export_panel, draw_matrix_config_panel,
-        draw_scene_panel, draw_signal_chart, draw_stats_panel, draw_recording_toolbar,
+        draw_scene_panel, draw_stats_panel,
     },
 };
 
@@ -68,7 +68,7 @@ impl EskinDesktopApp {
             config_panel: FloatingPanelState::new([840.0, 48.0], [128.0, 48.0]),
             config_state: ConfigPanelState::default(),
             stats_panel: FloatingPanelState::new([16.0, 520.0], [240.0, 48.0]),
-            recorder: Recorder::new(),
+            recorder: Recorder::full(),
             export_panel: FloatingPanelState::new([16.0, 280.0], [16.0, 280.0]),
             export_path: String::new(),
             matrix_config_panel: FloatingPanelState::new([840.0, 280.0], [400.0, 48.0]),