Dune: Host infrastructure
Dune supplies extension lifecycle, RPC, stores, and scheduling.
Business extensions live in src/host/extensions; Dune defines how they are declared, ordered, started, and stopped.
- Extension definitions and boot coordinator: dependency graphs, startup, errors.
- Stores: snapshots, resource state, single-flight.
- RPC: declarations, schemas, call boundaries.
- Scheduling: shared time and scheduling support.