the host's props
design is the dev host's own default for the admin caller (F-03) — the component itself has no default (rule 20). The member caller drops `authoring` from `capabilities`, hiding the admin-only rows and the debug bar on any surface that reads them, once those rows exist (PR 2+).
core-stub on :4120, this dev host on :3020, `/api/gql` and `/api/turns/:id/events` proxy to it, `/api/flow/*` proxies the flow api on :4020. `/prototype` serves the seat's own design reference read-only (F-06).