Major design changes from the review:
- Merge agent and watcher into a single smart per-node daemon
- CLI is a thin client with no database; service definition files
are the operator's source of truth for desired state
- Registry database lives on the agent, not the CLI
- Rename containers to components; components are independently
deployable within a service (mcp deploy metacrypt/web)
- active: true/false in service definitions; desired_state values
are running/stopped/ignore
- Server-side TLS + bearer token (not mTLS)
- Dedicated mcp user with rootless podman
- CLI commands: list (registry), ps (live), status (drift+events),
sync (push desired state)
- Agent reports node resources (disk, memory, CPU) for future scheduling
- Agent is gRPC-only (deliberate exception to REST+gRPC parity rule)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Design spec for the Metacircular Control Plane covering master/agent
architecture, service registry with desired/observed state tracking,
container lifecycle management, service definition files, single-file
transfer scoped to /srv/<service>/, and continuous monitoring via
mcp watch with event logging and alerting.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
