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-consent/dist/config/defaults.d.ts

@@ -0,0 +1,13 @@
+import type { CookieBannerConfig } from "../types/config.js";
+/**
+ * DEFAULT_CONFIG
+ * ---------------------------------------------------------
+ * Fallback values ONLY.
+ *
+ * These are used:
+ * - when the user omits a value
+ * - during internal normalisation
+ *
+ * User-provided config ALWAYS takes priority.
+ */
+export declare const DEFAULT_CONFIG: CookieBannerConfig;