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/content/watcher.d.ts

@@ -0,0 +1,5 @@
+import type { FSWatcher } from 'vite';
+export type WrappedWatcher = FSWatcher & {
+    removeAllTrackedListeners(): void;
+};
+export declare function createWatcherWrapper(watcher: FSWatcher): WrappedWatcher;