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-astro-server/response.d.ts

@@ -0,0 +1,8 @@
+import type http from 'node:http';
+import type { ErrorWithMetadata } from '../core/errors/index.js';
+import type { ModuleLoader } from '../core/module-loader/index.js';
+export declare function handle500Response(loader: ModuleLoader, res: http.ServerResponse, err: ErrorWithMetadata): Promise<void>;
+export declare function writeHtmlResponse(res: http.ServerResponse, statusCode: number, html: string): void;
+export declare function writeRedirectResponse(res: http.ServerResponse, statusCode: number, location: string): void;
+export declare function writeWebResponse(res: http.ServerResponse, webResponse: Response): Promise<void>;
+export declare function writeSSRResult(webRequest: Request, webResponse: Response, res: http.ServerResponse): Promise<void>;