Two gaps that only showed up once the backend's BFF login worked.
The SPA could not tell it was signed in. `AUTH_MODE: "external"` delegates
the session to whoever hosts the bundle, via
`window.__CA_FRONTEND_AUTH_OWNER__`; nothing installed one, so the runtime
fell back to `createUnavailableSessionAdapter` and a browser holding a
valid TECHLOG_SESSION cookie still saw "로그인 연동이 필요합니다".
Tech Log's host is its own backend. The session is an httpOnly cookie the
SPA cannot read, so the only way to observe it is to ask — which is what
`getStudioSession` already is, the contract's bootstrap operation that
issues the CSRF token. The owner probes it on creation and publishes the
result: 200 authenticated, 401/403 unauthenticated, anything else
integration-failed (claiming "signed out" on a 5xx would push the user
through a login they do not need). It starts at `recovery-pending` so a
signed-in user does not get a sign-in flash on every reload, and signs in
by navigating the browser to the authorization endpoint — the code flow is
a redirect chain an XHR cannot follow.
Installed from create-runtime-composition, before the adapters resolve it,
and only for AUTH_MODE=external with the HTTP Studio: MOCK has no backend
to ask and demo keeps its own adapter.
There was also no way to sign out. `signOut` is wired all the way to the
port and the label exists in both catalogs, but the button lives in the
template's AppShell, which TechLog never renders — it supplies its own
public and studio shells. The Studio header now carries it, drawn only
when authenticated so it does not duplicate the sign-in the auth gate
already offers.
Sign-out sends the CSRF header it caches from the session probe, and
reports failure instead of swallowing it. The first attempt did neither:
`/logout` is a mutation, answered 403 without the header, and the owner
published `unauthenticated` from a `finally` — so the cookie survived
while the UI claimed the user was out. That is the one failure someone on
a shared machine would never think to check, so a sign-out that did not
happen now throws and leaves the state alone.
Verified against the running backend with a production-profile build:
/studio signed out 401 probe → sign-in surface → Keycloak
after login session 200, dashboard 200, real data rendered
sign out 204, TECHLOG_SESSION cleared, /studio/documents
back to the sign-in surface
check:types, lint, check:architecture, check:tech-log-contract,
check:dev-release-manifest and check:browser-security all pass. test:all
is 1817 passed with two load-dependent flakes that pass in isolation
(provider-guardian-transaction, security-followup) and reference none of
the changed files — security-followup kills process groups, which is also
what was killing the Gradle daemon when both suites ran at once.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
