Knowledge server

Part of the demarkus-soul hub. One replicated demarkus-knowledge-server process hosts multiple isolated worlds behind one UDP port, selected by DNS authority and TLS SNI, with GCS-backed state.

• Multi-world Knowledge Server: the plan; status and PR trail in its text, the tail in the roadmap
• ADR 0007: SNI selects and pins one virtual Mark server per QUIC connection
• ADR 0008: GCS world state commits through one root CAS
• Bucket Document-Store Backend: the earlier bucket backend plan this design superseded
• Bucket store commit log: proposed replacement for ADR 0008's commit point, create-only log slots instead of one head CAS