feat(frontend): Phase 2/3 hardening release

Roadmap P0
- Ship /logo.svg fallback and rewire asset references (superseded later by
  the project-manager PNG in a separate commit).

Roadmap P1
- Response envelope alignment ({items,total,page,size}) across services
  and query hooks.
- Approval/ticket UX updates tied to the new backend rollback semantics.

Roadmap P2
- React.lazy + Vite manualChunks to split vendor-radix/charts/icons/forms
  from the main bundle and cut initial JS.
- Fix the 181 tsc errors (PaginationParams class + per-service generics).
- Auto-refresh flow for JWT refresh tokens wired into api-client.ts.

Roadmap P3
- i18n: i18next + language detector, en/ar locales, RTL auto-switch,
  LanguageToggle component in RoleLayout and AdminLmsLayout.
- GDPR: PrivacyCenter page for data export and right-to-erasure, backed
  by gdpr.service.ts; logout via AuthContext after erasure.
- Human-in-the-loop exam review UI: admin ExamReviewQueue + ExamReviewDetail
  pages, useExamReview hooks, exam-review.service.ts.
- AI quality loop: AIPromptEditor (versioning + render preview),
  AIFeedbackButtons for students, AIFeedbackTriage admin page, dedicated
  services, hooks, and types.
- Dark mode: ThemeProvider + ThemeToggle + chart color tokens.
- Accessibility: DialogDescription on every DialogContent; alert-dialog
  and sheet updates.
- Retire dead pages: ExamPage marketing, Index, ProfilePage import.
- Playwright e2e scaffolding: playwright.config.ts + e2e/login.spec.ts
  smoke tests, npm scripts test:e2e / test:e2e:install.

Made-with: Cursor

playwright.config.ts

@@ -0,0 +1,42 @@
+import { defineConfig, devices } from "@playwright/test";
+
+/**
+ * Playwright configuration for EnCoach frontend smoke tests.
+ *
+ * By default we run against a Vite preview server on localhost:4173. In CI
+ * this is started by the `playwright` step in .github/workflows/ci.yml after
+ * `npm run build`.
+ *
+ * Override the base URL with `PLAYWRIGHT_BASE_URL=https://... npx playwright
+ * test` to run against a deployed environment.
+ */
+const baseURL = process.env.PLAYWRIGHT_BASE_URL || "http://localhost:4173";
+
+export default defineConfig({
+  testDir: "./e2e",
+  timeout: 30_000,
+  expect: { timeout: 5_000 },
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  reporter: process.env.CI ? [["github"], ["list"]] : [["list"]],
+  use: {
+    baseURL,
+    trace: "on-first-retry",
+    screenshot: "only-on-failure",
+  },
+  webServer: process.env.PLAYWRIGHT_SKIP_WEBSERVER
+    ? undefined
+    : {
+        command: "npm run preview -- --host 127.0.0.1 --port 4173",
+        url: baseURL,
+        reuseExistingServer: !process.env.CI,
+        timeout: 60_000,
+      },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+  ],
+});