chore: align deployment pipeline with klz-2026 standards

- Ported pagespeed-sitemap.ts and integrated @lhci/cli
- Enriched deploy.yml with parallel QA, maintenance, and PageSpeed jobs
- Refined environment detection (main/beta/rc/prod)
- Consolidated workflows and cleaned up package.json

apps/web/package.json

@@ -8,8 +8,7 @@
     "build": "next build",
     "start": "next start",
     "lint": "next lint",
-    "test": "npm run test:smoke",
-    "test:smoke": "tsx ./scripts/smoke-test.ts",
+    "test": "npm run test:links",
     "test:links": "tsx ./scripts/test-links.ts",
     "test:file-examples": "tsx ./scripts/test-file-examples-comprehensive.ts",
     "clone-website": "tsx ./scripts/clone-recursive.ts",
@@ -20,7 +19,9 @@
     "video:render": "remotion render video/index.ts ButtonShowcase out/button-showcase.mp4",
     "video:render:contact": "remotion render video/index.ts ContactFormShowcase out/contact-showcase.mp4 --concurrency=1 --codec=h264 --crf=16 --pixel-format=yuv420p --overwrite",
     "video:render:button": "remotion render video/index.ts ButtonShowcase out/button-showcase.mp4 --concurrency=1 --codec=h264 --crf=16 --pixel-format=yuv420p --overwrite",
-    "video:render:all": "npm run video:render:contact && npm run video:render:button"
+    "video:render:all": "npm run video:render:contact && npm run video:render:button",
+    "pagespeed:test": "tsx ./scripts/pagespeed-sitemap.ts",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@mintel/next-utils": "^1.0.1",
@@ -67,6 +68,8 @@
     "@types/qrcode": "^1.5.6",
     "autoprefixer": "^10.4.20",
     "postcss": "^8.4.49",
+    "@lhci/cli": "^0.15.1",
+    "cheerio": "^1.1.2",
     "tsx": "^4.21.0",
     "typescript": "5.9.3"
   }