feat: 优化时间轴

src/editor/canvas/ViewportToolbar.test.tsx

@@ -128,7 +128,7 @@ it("uses the fullscreen button to collapse the side panels instead of entering b
   );
 });
 
-it("creates a new camera before storing viewport capsule screenshots from director view", async () => {
+it("stores viewport capsule screenshots on the active camera without creating a new one from director view", async () => {
   const user = userEvent.setup();
   const anchorClick = vi.spyOn(HTMLAnchorElement.prototype, "click").mockImplementation(() => {});
   const snapshot = {
@@ -142,7 +142,7 @@ it("creates a new camera before storing viewport capsule screenshots from direct
       dataUrl: "data:image/png;base64,current-camera",
       meta: {
         mode: "camera" as const,
-        cameraId: "cam_2",
+        cameraId: "cam_1",
         fov: 64,
         position: [3, 2, 1] as [number, number, number],
         target: [0, 1, -2] as [number, number, number],
@@ -156,30 +156,25 @@ it("creates a new camera before storing viewport capsule screenshots from direct
   await user.click(screen.getByRole("button", { name: "当前视角截图" }));
 
   await waitFor(() => {
-    expect(handler).toHaveBeenCalledWith({ preset: "current", source: "camera-panel", cameraId: "cam_2" });
+    expect(handler).toHaveBeenCalledWith({ preset: "current", source: "camera-panel", cameraId: "cam_1" });
   });
 
   const state = useDirectorStore.getState();
-  const originalCamera = state.project.cameras[0];
-  const newCamera = state.project.cameras[1];
+  const activeCamera = state.project.cameras[0];
 
   expect(anchorClick).not.toHaveBeenCalled();
   expect(state.viewMode).toBe("camera");
-  expect(state.project.activeCameraId).toBe("cam_2");
-  expect(state.selectedObjectId).toBe("cam_object_2");
-  expect(originalCamera?.captures).toEqual([]);
-  expect(newCamera?.fov).toBe(64);
-  expect(newCamera?.transform.position).toEqual(getCameraRigPositionFromViewSnapshot(snapshot));
-  expect(getCameraViewSnapshotFromShot(newCamera)).toEqual(snapshot);
-  expect(newCamera?.captures).toEqual([
+  expect(state.project.cameras).toHaveLength(1);
+  expect(state.project.activeCameraId).toBe("cam_1");
+  expect(activeCamera?.captures).toEqual([
     {
-      id: "cam_2-capture-01",
+      id: "cam_1-capture-01",
       index: 1,
-      name: "机位02-截图01",
+      name: "机位01-截图01",
       dataUrl: "data:image/png;base64,current-camera",
     },
   ]);
-  expect(newCamera?.lastCaptureUrl).toBe("data:image/png;base64,current-camera");
+  expect(activeCamera?.lastCaptureUrl).toBe("data:image/png;base64,current-camera");
 });
 
 it("stores viewport capsule screenshots in the current camera while already in camera view", async () => {