Delete an evaluation summary row.
This endpoint only removes the summary cache row — it does not delete the underlying evaluation job or S3 artifacts. To fully delete an evaluation, use DELETE /evaluations/.
Args: evaluation_id: UUID of the evaluation summary to delete team_id: Team ID that owns this evaluation claims: JWT claims with user and team info summary_repo: Evaluation summary repository
Raises: HTTPException: 401 if unauthorized, 403 if no permission, 404 if not found