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/unist-util-visit-children/index.d.ts

@@ -0,0 +1,3 @@
+export { visitChildren } from "./lib/index.js";
+export type Visitor<Kind extends import("unist").Parent> = import('./lib/index.js').Visitor<Kind>;
+export type Visit<Kind extends import("unist").Parent> = import('./lib/index.js').Visit<Kind>;