feat(studio): 回退/重roll 与 R5 用户确认下一步

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

backend/api/routes/studioRoute.py

@@ -11,6 +11,7 @@ from models.studio_models import (
     PipelineDefinition,
     RenameRunRequest,
     RunMessageRequest,
+    RunRerollRequest,
     StudioProject,
     StudioProjectSummary,
     StudioRun,
@@ -249,6 +250,79 @@ async def send_studio_run_message(
         raise HTTPException(status_code=500, detail=f"消息处理失败：{e}")
 
 
+@router.post("/projects/{project_id}/runs/{run_id}/undo", response_model=StudioRun)
+async def undo_studio_run(project_id: str, run_id: str):
+    try:
+        return studio_run_service.undo_run(project_id, run_id)
+    except FileNotFoundError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    except Exception as e:
+        logger.error(
+            "Failed to undo studio run %s/%s: %s", project_id, run_id, e
+        )
+        raise HTTPException(status_code=500, detail=f"回退失败：{e}")
+
+
+@router.post("/projects/{project_id}/runs/{run_id}/reroll")
+async def reroll_studio_run(
+    project_id: str, run_id: str, req: RunRerollRequest
+):
+    if req.stream:
+        async def ndjson_stream():
+            try:
+                async for event in studio_run_service.reroll_run_stream(
+                    project_id,
+                    run_id,
+                    profile_id=req.profileId,
+                    api_config=req.apiConfig,
+                ):
+                    yield json.dumps(event, ensure_ascii=False) + "\n"
+            except FileNotFoundError as e:
+                yield json.dumps(
+                    {"type": "error", "detail": str(e)}, ensure_ascii=False
+                ) + "\n"
+            except ValueError as e:
+                yield json.dumps(
+                    {"type": "error", "detail": str(e)}, ensure_ascii=False
+                ) + "\n"
+            except Exception as e:
+                logger.error(
+                    "Failed to stream studio run reroll %s/%s: %s",
+                    project_id,
+                    run_id,
+                    e,
+                )
+                yield json.dumps(
+                    {"type": "error", "detail": f"重 roll 失败：{e}"},
+                    ensure_ascii=False,
+                ) + "\n"
+
+        return StreamingResponse(
+            ndjson_stream(),
+            media_type="application/x-ndjson",
+        )
+
+    try:
+        return await studio_run_service.reroll_run(
+            project_id,
+            run_id,
+            stream=req.stream,
+            profile_id=req.profileId,
+            api_config=req.apiConfig,
+        )
+    except FileNotFoundError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    except Exception as e:
+        logger.error(
+            "Failed to reroll studio run %s/%s: %s", project_id, run_id, e
+        )
+        raise HTTPException(status_code=500, detail=f"重 roll 失败：{e}")
+
+
 @router.delete("/projects/{project_id}/runs/{run_id}")
 async def delete_studio_run(project_id: str, run_id: str):
     try: