feat: Upgrade to Astro with full PDPA compliance

PDPA Features:
✅ Cookie consent banner
✅ Consent logging API
✅ Admin dashboard
✅ Privacy Policy
✅ Terms & Conditions

Technical:
✅ Astro 5.x + Tailwind v4
✅ Docker on port 80
✅ SQLite database
✅ 15 pages built

Ready for Easypanel deployment.

node_modules/astro/dist/assets/fonts/infra/xxhash-hasher.js

@@ -0,0 +1,18 @@
+import xxhash from "xxhash-wasm";
+import { sortObjectByKey } from "../utils.js";
+class XxhashHasher {
+  hashString;
+  constructor(hashString) {
+    this.hashString = hashString;
+  }
+  static async create() {
+    const { h64ToString } = await xxhash();
+    return new XxhashHasher(h64ToString);
+  }
+  hashObject(input) {
+    return this.hashString(JSON.stringify(sortObjectByKey(input)));
+  }
+}
+export {
+  XxhashHasher
+};