chore: scaffold Astro project and configure agent skills

Initial commit: Astro minimal template (Node >= 22.12), agent docs
(AGENTS.md/CLAUDE.md/QWEN.md), and docs/agents setup for the Gitea
issue tracker via the tea CLI, triage labels, and domain docs.

package.json

@@ -0,0 +1,20 @@
+{
+  "name": "site",
+  "type": "module",
+  "version": "0.0.1",
+  "engines": {
+    "node": ">=22.12.0"
+  },
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro"
+  },
+  "dependencies": {
+    "astro": "^7.3.2"
+  },
+  "allowScripts": {
+    "esbuild": true
+  }
+}