CTAO Science Portal: static Astro site with git-based CMS (Sveltia + Gitea)

Portal code only; editorial content lives in the ctao/content repo on the
demo machine's Gitea and is overlaid at build time (see README.md and
deploy/README.md). Live demo: https://astro.isl-dev.grid.cyfronet.pl

package.json

@@ -0,0 +1,22 @@
+{
+  "name": "ctao-portal",
+  "type": "module",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "check": "astro check && astro build && node scripts/check-links.mjs"
+  },
+  "dependencies": {
+    "astro": "7.2.10"
+  },
+  "devDependencies": {
+    "@astrojs/check": "0.9.10",
+    "typescript": "6.0.3"
+  },
+  "engines": {
+    "node": ">=22.19.0"
+  }
+}