feat: canvas drag/resize/selection, modal planner, default OneWay (唐超)

- Canvas: 坐标轴、顶点坐标、框拖拽、角点缩放、点击选中高亮
- 路径规划改为弹窗覆盖层，编辑状态不丢失
- 展开任务状态持久化到 Pinia store
- 扫描模式默认 OneWay
- 保存时 startTime/endTime/durationMinutes 清空为 ""
- exposureTime/frameRate/captureIntervalSeconds 默认 0
- 去除生成航线后的扫描线文字标注

src-tauri/src/models/path_plan.rs

@@ -10,8 +10,12 @@ pub struct ScanRegion {
     pub y_min: f64,
     #[serde(rename = "yMax")]
     pub y_max: f64,
+    #[serde(default = "default_shape")]
+    pub shape: String,
 }
 
+fn default_shape() -> String { "Rect".to_string() }
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct CameraParams {
     #[serde(rename = "fovDegrees")]
@@ -67,7 +71,7 @@ impl Default for PlannerDefaults {
             speed_y_cm_s: 5.0,
             speed_x_start_cm_s: 20.0,
             speed_x_scan_cm_s: 10.0,
-            mode: "Zigzag".to_string(),
+            mode: "OneWay".to_string(),
         }
     }
 }

src-tauri/src/models/task.rs

@@ -68,10 +68,10 @@ impl SubTask {
         Self {
             id: default_subtask_id(),
             sub_task_type,
-            capture_interval_seconds: None,
+            capture_interval_seconds: Some(0),
             default_render_band: Some(550),
-            exposure_time: None,
-            frame_rate: None,
+            exposure_time: Some(0),
+            frame_rate: Some(0),
             path_line_file_path: String::new(),
             duration_minutes: 0.0,
             estimated_duration_minutes: 0.0,