Use this section for implementation internals and maintenance workflows.
docs/development/ARCHITECTURE.mddocs/development/CONFIG_FIELDS.mddocs/development/CONFIG_FLOW.mddocs/development/TESTING.mddocs/development/UPSTREAM_SYNC.md
docs/development/ARCHITECTURE.md- runtime architecture, module boundaries, and request flow.docs/development/CONFIG_FIELDS.md- canonical config schema and option semantics.docs/development/CONFIG_FLOW.md- config load/merge resolution behavior.docs/development/TESTING.md- test strategy and verification commands.docs/development/UPSTREAM_SYNC.md- how we track/sync upstream behavior.docs/development/upstream-watch.json- upstream watch state artifact.