feat: scaffold astro publishing pipeline

package.json

@@ -1,5 +1,38 @@
 {
   "name": "ai-for-dummies",
   "private": true,
-  "scripts": { "verify": "node scripts/verify.mjs", "serve": "python3 -m http.server 4173" }
+  "type": "module",
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "check": "astro check",
+    "lint": "eslint . --max-warnings=0 && stylelint --allow-empty-input 'src/**/*.css' --max-warnings=0",
+    "format": "prettier --write .",
+    "verify": "node scripts/verify.mjs && node scripts/audit-ui.mjs && node .agents/scripts/check-tokens.mjs",
+    "gate": "./.agents/scripts/gate.sh",
+    "snapshot": "node .agents/scripts/snapshot-route.mjs",
+    "serve": "python3 -m http.server 4173",
+    "prepare": "husky"
+  },
+  "devDependencies": {
+    "@astrojs/check": "0.9.4",
+    "@eslint/js": "^9",
+    "@typescript-eslint/parser": "^8",
+    "astro": "5.5.0",
+    "eslint": "^9",
+    "eslint-plugin-astro": "^1",
+    "husky": "^9",
+    "lint-staged": "^16",
+    "prettier": "^3",
+    "prettier-plugin-astro": "^0.14",
+    "stylelint": "^16",
+    "stylelint-config-standard": "^39",
+    "typescript": "^5.8.3"
+  },
+  "overrides": {
+    "@astrojs/language-server": "2.15.0",
+    "defu": "6.1.7",
+    "vite": "6.2.1"
+  }
 }