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/zod/v4/core/versions.d.ts

@@ -0,0 +1,5 @@
+export declare const version: {
+    readonly major: 4;
+    readonly minor: 0;
+    readonly patch: number;
+};