Put the fedwiki chain (init, render, farm, caddy) behind a fedwiki
compose profile symmetric with discourse's; the default composition is
neither, selected via COMPOSE_PROFILES in test/.env, so a default stack
no longer binds host 443.
Guard every script and walkthrough on service presence: shared
skipUnlessIntegrationEndpointReachable helper, seed-stack presence
checks (also repairing its unsourced .env and container-native render
invocation), generic root-owned testdata reclaim in teardown, discourse
coverage in verify-stack-isolation, and fedwiki's 8090 base in the port
probe.
Update stack docs and finalize status bookkeeping for all three
changes; archives the test-stack-integration-profiles change.
Gate Stripe readiness on real credentials, surface dead-lettered syncs
as
failed with retry, and add header-safe toast JSON encoding.
Switch the test Keycloak realm references to `test` and document the
OpenSpec change.
Seed Keycloak into a dedicated wikicafe app realm and repoint the
test OIDC, Temporal, and FedWiki wiring to it.
Label test credentials as throwaway, remove the unused realm export from
tracking, and have init write the embedded starter config.
cgalo5758