feat(workspace): 画布 2D/3D 切换与车辆相机跟随

- workspaceToolbar API 新增 view/toggle 与 camera/follow
- 画布底栏新增 2D/3D 切换、自动跟随按钮，组件卸载时自动停止跟随
- 地图监控页将选中车辆 id 透传给底栏，并接入监控配置缓存

Co-authored-by: Cursor <cursoragent@cursor.com>

frontends/apps/simple-platform-vue/src/api/workspaceToolbar.ts

@@ -45,12 +45,21 @@ export interface ToolbarLayer {
   visible: boolean
 }
 
+export interface ToolbarViewState {
+  map2D: boolean
+  follow: {
+    enabled: boolean
+    carId: number | null
+  }
+}
+
 export interface ToolbarState {
   align: { sites: boolean; cars: boolean; tracks: boolean }
   select: { tracks: boolean; cars: boolean; decor: boolean; sites: boolean }
   display: { labels: boolean; primitives: boolean; cars: boolean }
   layers: ToolbarLayer[]
   recording: ToolbarRecordingState
+  view?: ToolbarViewState
 }
 
 interface Envelope<T> {
@@ -109,5 +118,17 @@ export const workspaceToolbarApi = {
   startPlayback: (fileName: string) =>
     unwrap<ToolbarState>(http.post(`${BASE}/playback/start`, compatFilePayload(fileName))),
 
-  stopPlayback: () => unwrap<ToolbarState>(http.post(`${BASE}/playback/stop`))
+  stopPlayback: () => unwrap<ToolbarState>(http.post(`${BASE}/playback/stop`)),
+
+  toggleViewMode: () => unwrap<ToolbarState>(http.post(`${BASE}/view/toggle`)),
+
+  setCameraFollow: (carId: number | null, enabled: boolean) =>
+    unwrap<ToolbarState>(
+      http.post(`${BASE}/camera/follow`, {
+        carId: carId ?? undefined,
+        enabled,
+        CarId: carId ?? undefined,
+        Enabled: enabled
+      })
+    )
 }