- StaticCatalog (internal/agent/catalog.go): a framework helper carrying
the catalog-provider boilerplate — enumeration, per-agent card lookup
and typed unknown-id errors — so catalog providers do not reinvent it.
- agenttest.RunConformance: a one-call conformance suite pinning the SPI's
implicit contracts (registration metadata, zero-Deps factory, card
single source, enumeration stability).
- example provider (internal/agent/example): an offline in-memory
reference provider (echo / reporter, deliberately different capability
matrices) that doubles as the provider-onboarding template and the
command tree's zero-network demo backend.