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>

Justfile

@@ -95,6 +95,32 @@ lint:
 test:
     pnpm turbo run test
 
+# ── Testing ───────────────────────────────────────────────────────────────────
+
+# Run every test suite (pgTAP + Vitest integration + Playwright E2E).
+# Requires `just dev` to already be running — the stack must be healthy.
+test-all: test-db test-integration test-e2e
+
+# Run pgTAP SQL tests directly against the dev database
+# `set dotenv-load` at the top of this file sources .env so POSTGRES_PASSWORD
+# is available — we forward it to psql via PGPASSWORD.
+test-db:
+    PGPASSWORD="$POSTGRES_PASSWORD" psql -U postgres -h localhost -d postgres -v ON_ERROR_STOP=1 -f supabase/tests/001_accept_invitation.sql
+    PGPASSWORD="$POSTGRES_PASSWORD" psql -U postgres -h localhost -d postgres -v ON_ERROR_STOP=1 -f supabase/tests/002_item_frequency_trigger.sql
+    PGPASSWORD="$POSTGRES_PASSWORD" psql -U postgres -h localhost -d postgres -v ON_ERROR_STOP=1 -f supabase/tests/003_promote_on_admin_leave.sql
+
+# Run Vitest integration tests (RLS + trigger assertions via supabase-js)
+test-integration:
+    pnpm --filter @colectivo/test-utils test
+
+# Run Playwright E2E tests (headless)
+test-e2e:
+    pnpm --filter @colectivo/web exec playwright test
+
+# Run Playwright E2E tests in headed mode (for debugging)
+test-e2e-headed:
+    pnpm --filter @colectivo/web exec playwright test --headed
+
 # ── Backup & Restore ──────────────────────────────────────────────────────────
 
 # Take a manual backup of a service (e.g. just backup supabase)