Constant DEFAULT_MAX_BLOB_SIZE 

pub const DEFAULT_MAX_BLOB_SIZE: usize = _; // 67_108_864usize

Default ceiling for a single blob transferred over the daemon, in bytes (64 MiB). Shared by the server (HTTP body limit + gRPC decode limit) and the client (gRPC decode limit) so both agree on the supported blob size. The daemon may raise its own limit via GONZALO_MAX_BLOB_SIZE, but a client still caps decoding at this constant (see gonzalo#184 design §4).