Joseph Doherty
7d7de482b7
Streams a sealed deployment's ArtifactBlob to a fetching driver node in 128-KiB chunks (matching the LocalDb cache chunk size). Unknown id, a non-sealed deployment, and a zero-length blob all collapse to one indistinguishable NotFound — existence-hiding plus the #485 serve-side guard (never stream empty bytes as a valid empty config). The impl is named DeploymentArtifactGrpcService to avoid colliding with the generated DeploymentArtifactService container type. Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW