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/@libsql/isomorphic-ws/web.mjs

@@ -0,0 +1,11 @@
+let _WebSocket;
+if (typeof WebSocket !== "undefined") {
+    _WebSocket = WebSocket;
+} else if (typeof global !== "undefined") {
+    _WebSocket = global.WebSocket;
+} else if (typeof window !== "undefined") {
+    _WebSocket = window.WebSocket;
+} else if (typeof self !== "undefined") {
+    _WebSocket = self.WebSocket;
+}
+export { _WebSocket as WebSocket };