P1: path routing, prerender shells, E2E, and HelmetProvider donate fix.

Replace hash URLs with path-based routing, post-build prerender for money pages, Playwright smoke tests, and wrap the app in HelmetProvider so /donate mounts correctly.

Co-authored-by: Cursor <[email protected]>

package.json

@@ -10,9 +10,12 @@
     "photos:optimize": "bash scripts/optimize-community-photos.sh",
     "prebuild": "npm run brand:export && npm run photos:optimize",
     "build": "tsc && vite build",
+    "postbuild": "node scripts/prerender-money-pages.mjs",
     "test": "vitest run",
     "test:ci": "vitest run --reporter=verbose && npm run test:api",
     "test:api": "npm --prefix mim-api test",
+    "test:e2e": "playwright test",
+    "test:e2e:lan": "MIM_E2E_BASE_URL=http://192.168.11.37 playwright test",
     "test:watch": "vitest",
     "type-check": "tsc --noEmit",
     "validate:ci": "npm run type-check && npm run test:ci && npm run a11y:header-audit",
@@ -82,6 +85,7 @@
     "zustand": "^5.0.8"
   },
   "devDependencies": {
+    "@playwright/test": "^1.61.0",
     "@resvg/resvg-js": "^2.6.2",
     "@tailwindcss/typography": "^0.5.10",
     "@testing-library/jest-dom": "^6.9.1",