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/csso/lib/version.js

@@ -0,0 +1,5 @@
+import { createRequire } from 'module';
+
+const require = createRequire(import.meta.url);
+
+export const { version } = require('../package.json');