[AZ-456] Test infrastructure: Vitest + MSW + Playwright + scripts

Scaffolds the Blackbox test project per AZ-456 / environment.md across
the three profiles:

- fast  : Vitest 3.x + jsdom + MSW 2.x + RTL/jest-dom; tests/setup.ts
          boots the MSW Node server with onUnhandledRequest:'error',
          afterEach resets handlers, clears bearer + navigate-to-login
          spy. Default handlers ship for every suite service plus OWM
          and tile stand-ins. Fixtures mirror seed_* in test-data.md.
- e2e   : Playwright ^1.49 with chromium + firefox projects against the
          suite docker-compose stack; owm-stub + tile-stub Bun servers,
          playwright-runner image, seeds.sql for the test-db.
- static: scripts/run-tests.sh extended — tsc --noEmit (test config),
          vite build, ripgrep checks (with grep -r fallback), CSV
          report at test-output/static-report.csv per AC-7 columns.

Smoke tests cover AC-3, AC-4 (fast, 5 tests, PASS) and AC-1, AC-2,
AC-5, AC-8 (e2e, gated by Risk 4 docker availability). Static profile
(13 checks) PASS — STC-SEC1 (no literal OWM key) lifted from
QUARANTINE per AZ-447 with a narrowed pattern.

Files:
  +24 tests/**, +10 e2e/**, +vitest.config.ts, +tsconfig.test.json
  ~package.json (test scripts + devDeps for vitest, @testing-library/*,
   msw, @playwright/test, jsdom, @types/node, @vitest/coverage-v8)
  ~scripts/run-tests.sh, scripts/run-performance-tests.sh — switched
   RESULTS_DIR to test-output/, compose path to project-local
  ~.gitignore — added /test-output/

Verification:
  bun run test:fast        → 11 / 11 PASS
  ./scripts/run-tests.sh   → static 13/13 + fast 11/11 PASS, exit 0

Tracker: AZ-456 → In Testing.
Co-authored-by: Cursor <cursoragent@cursor.com>

tests/infrastructure.test.ts

@@ -0,0 +1,61 @@
+import { afterEach, describe, expect, it } from 'vitest'
+import { http, HttpResponse } from 'msw'
+import { server } from './msw/server'
+import { api } from '../src/api/client'
+import { seedBearer, clearBearer } from './helpers/auth'
+import { loadEnumSnapshot } from './fixtures/enum_spec_snapshot'
+
+// Smoke tests for AZ-456 (Test Infrastructure):
+//   - AC-3 : MSW intercepts every outbound /api/<service>/* fetch (default
+//            handler match + per-test override + reset between tests).
+//   - AC-4 : Vitest discovers this file under jsdom, runs it, and the
+//            scripts/run-tests.sh runner emits ./test-output/fast-report.xml
+//            (the JUnit reporter is wired in vitest.config.ts).
+//   - AC-7 : The JUnit/CSV report shape is asserted by scripts/run-tests.sh
+//            after this suite finishes — see the [fast] section there.
+
+describe('AZ-456 fast-profile infrastructure', () => {
+  afterEach(() => {
+    clearBearer()
+  })
+
+  it('AC-3: MSW intercepts a default /api/admin/* fetch', async () => {
+    seedBearer()
+    const me = await api.get<{ id: string; email: string }>('/api/admin/users/me')
+    expect(me.id).toBe('user-alice')
+    expect(me.email).toBe('op_alice@test.local')
+  })
+
+  it('AC-3: per-test server.use(...) overrides the default handler', async () => {
+    seedBearer()
+    server.use(
+      http.get('/api/admin/users/me', () =>
+        HttpResponse.json({ id: 'user-override', email: 'override@test.local' }),
+      ),
+    )
+    const me = await api.get<{ id: string; email: string }>('/api/admin/users/me')
+    expect(me.id).toBe('user-override')
+  })
+
+  it('AC-3: handlers reset between tests (default returns op_alice again)', async () => {
+    seedBearer()
+    const me = await api.get<{ id: string; email: string }>('/api/admin/users/me')
+    expect(me.id).toBe('user-alice')
+  })
+
+  it('AC-4: jsdom + Vitest globals are configured', () => {
+    expect(typeof window).toBe('object')
+    expect(typeof document).toBe('object')
+    // @testing-library/jest-dom matchers are extended via tests/setup.ts.
+    const el = document.createElement('div')
+    el.textContent = 'hello'
+    expect(el).toHaveTextContent('hello')
+  })
+
+  it('AC-4 / AC-29: enum spec snapshot is reachable from tests', () => {
+    const spec = loadEnumSnapshot()
+    expect(spec.enums.AnnotationStatus.values).toMatchObject({
+      None: 0, Created: 10, Edited: 20, Validated: 30, Deleted: 40,
+    })
+  })
+})