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/cli/infra/tinyexec-command-executor.d.ts

@@ -0,0 +1,6 @@
+import type { CommandExecutor, CommandExecutorOptions } from '../definitions.js';
+export declare class TinyexecCommandExecutor implements CommandExecutor {
+    execute(command: string, args?: Array<string>, options?: CommandExecutorOptions): Promise<{
+        stdout: string;
+    }>;
+}