test: full test suite (Vitest + pgTAP + Playwright) + TDD plan restructure

Add a 4-layer test stack covering RLS, triggers, and UI flows for Fases 0–2a,
then restructure every plan file so future fases start with tests and end with
a verification gate.

Test suite
- packages/test-utils: Vitest integration tests signing HS256 JWTs via jose so
  each test acts as a specific seed user (createClientAs + createAdminClient)
- supabase/tests: pgTAP for accept_invitation(), item_frequency trigger, and
  promote-on-admin-leave; each file self-installs pgtap extension
- apps/web/tests: Playwright E2E with live Keycloak login per test (storageState
  caching doesn't rehydrate Supabase's session state reliably)
- just test-all chains the three suites; test-db forwards POSTGRES_PASSWORD
  as PGPASSWORD with ON_ERROR_STOP=1 so failures abort the chain

Supabase auth gotcha
- PostgREST queries inside onAuthStateChange deadlock on GoTrue's navigator.locks
  auth lock (getAccessToken → getSession → initializePromise waits on the same
  lock that's held during event dispatch). Fix is two defenses: a pass-through
  lock in $lib/supabase, and a setTimeout(0) defer in root +layout.svelte to
  push loadUserCollectives out of the callback's microtask chain. Either alone
  is insufficient; both together unblock the Playwright suite.

Env key rotation
- apps/web/.env.development had a stale demo anon key signed with a different
  secret than root .env; Vite inlined that into the browser bundle so Kong (which
  uses the root .env value) rejected every request with 401. Aligned the two
  files and added a memory entry to flag this for the next rotation.

Plan restructure (TDD)
- Every fase now opens with X.0 Tests primero and closes with X.Z Verificación
  final. Completed fases (0, 1, 2a) show the pattern retroactively with the
  tests that currently cover them; pending fases (2b, 3, 4) list the tests to
  write before implementation.

Docs
- CLAUDE.md status line reports 54 + 12 + 15 = 81 green tests, adds gotchas
  #11 (auth-lock deadlock) and #12 (no storageState caching)
- README.md adds a TDD methodology section and the test-all command
- .gitignore excludes Playwright's generated reports and auth state

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/routes/+layout.svelte

@@ -14,28 +14,32 @@
 
 		const {
 			data: { subscription }
-		} = supabase.auth.onAuthStateChange(async (event, session) => {
+		} = supabase.auth.onAuthStateChange((event, session) => {
 			currentUser.set(session?.user ?? null);
 			authLoading.set(false);
 
 			if (session) {
-				// Load collectives on every auth event that provides a session:
-				// INITIAL_SESSION (page refresh), SIGNED_IN (post-login), TOKEN_REFRESHED.
-				await loadUserCollectives(session.user.id);
+				// Defer out of the onAuthStateChange callback so the internal auth
+				// lock is fully released before we make any PostgREST query.
+				// Without this, queries hang on `getAccessToken() -> initializePromise`
+				// in some browser environments (e.g. Playwright headless Chromium).
+				setTimeout(async () => {
+					await loadUserCollectives(session.user.id);
 
-				if (event === 'SIGNED_IN') {
-					// Post-login: send the user where they belong.
-					// Only redirect when coming from the callback or the root — not on
-					// token refreshes or when the user is already on a real route.
-					const path = $page.url.pathname;
-					if (path === '/auth/callback' || path === '/') {
-						if ($userCollectives.length === 0) {
-							goto('/onboarding');
-						} else {
-							goto('/lists');
+					if (event === 'SIGNED_IN') {
+						// Post-login: send the user where they belong.
+						// Only redirect when coming from the callback or the root — not on
+						// token refreshes or when the user is already on a real route.
+						const path = $page.url.pathname;
+						if (path === '/auth/callback' || path === '/') {
+							if ($userCollectives.length === 0) {
+								goto('/onboarding');
+							} else {
+								goto('/lists');
+							}
 						}
 					}
-				}
+				}, 0);
 			}
 		});