Harden RC7 API response contracts

backend/app/api/routes/analysis.py

@@ -6,6 +6,7 @@ from sqlalchemy.orm import Session
 from app.core.errors import AppError
 from app.db.session import get_db
 from app.models import Dataset
+from app.schemas import Envelope, JobRead
 from app.schemas.analysis import ChangeDetectionRequest
 from app.services.change_detection_service import ChangeDetectionService
 from app.services.job_service import JobService
@@ -14,7 +15,7 @@ from app.utils.response import envelope
 router = APIRouter(prefix="/analysis", tags=["analysis"])
 
 
-@router.post("/change-detection", response_model=dict)
+@router.post("/change-detection", response_model=Envelope[JobRead])
 def run_change_detection(
     payload: ChangeDetectionRequest,
     db: Session = Depends(get_db),