Phase 3.7: paid pairing flow + returning chat + extension flip

- Backend: payment_sessions + pairing_failures tables; payment.service.js
  and pairing-failure.service.js (new); rewritten pairing.service.js
  (payment-gated blast + targeted "Curhat lagi" + cancel + fallback);
  rewritten extension.service.js (data-driven auto-approve with offline
  safeguard, charge-at-approval); pricing.service.js (extension tiers
  without free trial); mitra-status.service.js (countAvailableMitras
  cached path); 60s sweeper for stale payment sessions
- Backend routes: client.payment.routes, client.mitra-availability.routes,
  internal/failed-pairings.routes; client.chat.routes rewritten for
  payment-gated start + /returning + /cancel + /fallback-to-blast;
  internal/config.routes adds 4 new keys with Valkey invalidate publish
- client_app: mitra-availability poll, payment screen + notifier, pairing
  notifier rewrite (PairingTargetedWaiting + PairingFailed states),
  targeted-waiting overlay + bestie-unavailable dialog, "Curhat lagi"
  CTA, failed-pairing terminal, extension via payment-session
- mitra_app: PairingRequestType enum, returning-chat 20s countdown
  auto-dismiss, extension card "otomatis disetujui" copy
- control_center: 4 new config rows in Settings, Failed Pairings page
  (filter + paginate + action menu), sidebar + route registered
- Test infrastructure: Vitest backend (7/7 pass), Playwright CC (4/4
  pass), Maestro mobile scaffold (CLI install pending)
- Bugs found via Playwright + fixed: LoginPage labels not associated
  with inputs (a11y); backend internal CORS missing PATCH/PUT/DELETE
  in allow-methods (silent settings breakage in browsers since Stage 4)
- Docs: phase3.7.md PRD, phase3.7-plan.md, phase3.7-questions.md (Q&A),
  phase3.7-testing.md (E2E checklist), phase3.7-test-run-2026-05-03.md
  (today's run results)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

control_center/.env.example

@@ -1,2 +1,32 @@
-# Internal API base URL — accessible via VPN only
+# =============================================================================
+# Control Center — environment variables
+# =============================================================================
+# Copy this file to `.env` and fill in your local values. `.env` is gitignored.
+#
+# Two sets of vars live here:
+#   1. Vite build-time vars (VITE_*) read by the React app at dev/build time.
+#   2. Playwright test runner vars read only by the e2e test process.
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Vite (read by the SPA itself)
+# -----------------------------------------------------------------------------
+# Internal API base URL — accessible via VPN only.
 VITE_API_BASE_URL=https://internal.halobestie.com
+
+# -----------------------------------------------------------------------------
+# Playwright e2e tests (read by `npm run test:e2e`)
+# -----------------------------------------------------------------------------
+# Where the CC dev server is reachable (the SPA itself). Override to point at
+# a CC dev server running on another machine.
+CC_BASE_URL=http://localhost:5173
+
+# Where the internal backend listener is reachable. Used by test setup
+# helpers that mint test JWTs / seed fixtures via the internal API.
+BACKEND_INTERNAL_URL=http://localhost:3001
+
+# Test CC user credentials — must already exist in the control_center_users
+# table on the target backend. Use the seeded admin (admin@halobestie.com /
+# ChangeMe123!) for local dev, or provision a dedicated test operator.
+CC_TEST_EMAIL=test-operator@example.com
+CC_TEST_PASSWORD=changeme