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/tests/fixtures/global-setup.ts

@@ -0,0 +1,29 @@
+/**
+ * Playwright global setup — health check for Keycloak + SvelteKit dev server.
+ *
+ * Auth state is NOT cached across tests: each test calls `loginAs(page, user)`
+ * to perform the full Keycloak login. This is slower but deterministic. Previous
+ * iterations used `browser.newContext({ storageState })`, but Supabase JS v2's
+ * async `_recoverAndRefresh` doesn't reliably re-fire INITIAL_SESSION on restore.
+ */
+import type { FullConfig } from '@playwright/test';
+
+const KEYCLOAK_URL = process.env.PUBLIC_KEYCLOAK_URL ?? 'http://localhost:8080';
+const KEYCLOAK_REALM = process.env.PUBLIC_KEYCLOAK_REALM ?? 'colectivo';
+
+export default async function globalSetup(_config: FullConfig) {
+	// Minimal health check: Keycloak realm discovery endpoint is reachable.
+	try {
+		const res = await fetch(
+			`${KEYCLOAK_URL}/realms/${KEYCLOAK_REALM}/.well-known/openid-configuration`,
+			{ signal: AbortSignal.timeout(5_000) }
+		);
+		if (!res.ok) {
+			throw new Error(`Keycloak realm discovery returned ${res.status}`);
+		}
+	} catch (err) {
+		throw new Error(
+			`Keycloak not reachable at ${KEYCLOAK_URL} — is \`just dev\` running? ${err}`
+		);
+	}
+}