The memory socket in brokerd.toml is optional, and bxctl's flag is --memory-socket. A note's header carries its class. Built-in grants are kept apart from the owner's, and builtin- ids are reserved. The session state is carried through Decision and RunSpec, labels through run_labelled. loopd's assemble_with and MemorySource. Baseline measured at 881 and 2,432 tokens. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>