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/transform/utils.d.ts

@@ -0,0 +1,5 @@
+import type { Element } from 'hast';
+import type MagicString from 'magic-string';
+export declare function replaceAttribute(s: MagicString, node: Element, key: string, newValue: string): MagicString | undefined;
+export declare function needsEscape(value: any): value is string;
+export declare function escapeTemplateLiteralCharacters(value: string): string;