feat(auth): dual app-reg parallel operation - legacy gktatooine app alongside new C4A8 app

True parallel operation, no forced re-consent: existing tenants keep signing
in via the legacy app (1a400946), new tenants land on the C4A8 app (886ab5e2).

Model "default legacy, funnel primary, learn in the background":
- Web: am_auth_app flag -> NEXT_PUBLIC_ENTRA_DEFAULT_APP -> primary; get-started
  CTA hands over with ?authapp=primary; auth/me homedApp updates the flag so an
  operator tenant flip takes effect on each user's NEXT login; AADSTS90094/65001
  one-shot cross-app retry, AADSTS65004 -> failed screen with previous-app link;
  am_login_attempt pins redirect returns to the app that started them.
- Backend: TenantConfiguration.HomedAppClientId (null = legacy, GA-only flip via
  PUT config) + LastAuthClientId/Since observability; EntraAppRegistry resolves
  the acting app per tenant (no-op until the legacy config pair is set); Graph
  client-credentials, admin-consent URLs and the surfaced client id follow the
  homed app (app-scoped cache keys); JwtBearer [Authorize] pipeline now shares
  the middleware audience builders (was single-audience - would 401 legacy
  tokens after the swap); middleware trusts EntraId:LegacyClientId implicitly.
- well-known association file now lists both app ids (publisher domain);
  deploy-web passes NEXT_PUBLIC_ENTRA_LEGACY_CLIENT_ID / _DEFAULT_APP;
  mcp-server.bicep default client id -> C4A8 app.

Backend xUnit 3730/3730, vitest 625/625 (13 new), tsc/ESLint clean, next build ok.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Oliver Kieselbach
2026-07-31 18:12:25 +02:00
parent d9d22bc443
commit f795fbcb4e
30 changed files with 1250 additions and 114 deletions
+4
View File
@@ -39,6 +39,10 @@ jobs:
uses: Azure/static-web-apps-deploy@v1
env:
NEXT_PUBLIC_ENTRA_CLIENT_ID: ${{ vars.NEXT_PUBLIC_ENTRA_CLIENT_ID }}
# Dual app-reg window: previous app registration (unset = single-app behaviour)
# and the default app for browsers without a stored selection (legacy|primary).
NEXT_PUBLIC_ENTRA_LEGACY_CLIENT_ID: ${{ vars.NEXT_PUBLIC_ENTRA_LEGACY_CLIENT_ID }}
NEXT_PUBLIC_ENTRA_DEFAULT_APP: ${{ vars.NEXT_PUBLIC_ENTRA_DEFAULT_APP }}
NEXT_PUBLIC_ENTRA_REDIRECT_URI: ${{ vars.NEXT_PUBLIC_ENTRA_REDIRECT_URI }}
NEXT_PUBLIC_ENTRA_POST_LOGOUT_REDIRECT_URI: ${{ vars.NEXT_PUBLIC_ENTRA_POST_LOGOUT_REDIRECT_URI }}
NEXT_PUBLIC_API_BASE_URL: ${{ vars.NEXT_PUBLIC_API_BASE_URL }}