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-modify-children/index.d.ts

@@ -0,0 +1,5 @@
+export {modifyChildren} from './lib/index.js'
+export type Modifier<Kind extends import('unist').Parent> =
+  import('./lib/index.js').Modifier<Kind>
+export type Modify<Kind extends import('unist').Parent> =
+  import('./lib/index.js').Modify<Kind>