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/enhanced-resolve/lib/util/memoize.js

@@ -0,0 +1,37 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/**
+ * @template T
+ * @typedef {() => T} FunctionReturning
+ */
+
+/**
+ * @template T
+ * @param {FunctionReturning<T>} fn memorized function
+ * @returns {FunctionReturning<T>} new function
+ */
+const memoize = (fn) => {
+	let cache = false;
+	/** @type {T | undefined} */
+	let result;
+	return () => {
+		if (cache) {
+			return /** @type {T} */ (result);
+		}
+
+		result = fn();
+		cache = true;
+		// Allow to clean up memory for fn
+		// and all dependent resources
+		/** @type {FunctionReturning<T> | undefined} */
+		(fn) = undefined;
+		return /** @type {T} */ (result);
+	};
+};
+
+module.exports = memoize;