feat(ci): add deep quality assertions (html, security, links, spelling)

package.json

@@ -46,6 +46,7 @@
   "devDependencies": {
     "@commitlint/cli": "^20.4.0",
     "@commitlint/config-conventional": "^20.4.0",
+    "@cspell/dict-de-de": "^4.1.2",
     "@lhci/cli": "^0.15.1",
     "@mintel/eslint-config": "1.8.3",
     "@mintel/tsconfig": "1.8.3",
@@ -69,8 +70,10 @@
     "backstopjs": "^6.3.25",
     "cheerio": "^1.2.0",
     "critters": "^0.0.25",
+    "cspell": "^9.6.4",
     "eslint": "^9.18.0",
     "happy-dom": "^20.6.1",
+    "html-validate": "^10.8.0",
     "husky": "^9.1.7",
     "lint-staged": "^16.2.7",
     "lucide-react": "^0.563.0",
@@ -100,6 +103,10 @@
     "check:mdx": "node scripts/validate-mdx.mjs",
     "check:a11y": "pa11y-ci",
     "check:wcag": "tsx ./scripts/wcag-sitemap.ts",
+    "check:html": "tsx ./scripts/check-html.ts",
+    "check:spell": "cspell \"content/**/*.{md,mdx}\" \"app/**/*.tsx\" \"components/**/*.tsx\"",
+    "check:security": "tsx ./scripts/check-security.ts",
+    "check:links": "bash ./scripts/check-links.sh",
     "backstop:reference": "backstop reference --config=backstop.config.js --docker",
     "backstop:test": "backstop test --config=backstop.config.js --docker",
     "backstop:approve": "backstop approve --config=backstop.config.js --docker",