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/vite-plugin-html/index.d.ts

@@ -0,0 +1,8 @@
+export default function html(): {
+    name: string;
+    options(options: any): void;
+    transform(source: string, id: string): Promise<{
+        code: string;
+        map: import("magic-string").SourceMap;
+    } | undefined>;
+};