feat: implement comprehensive audit logging system

utils/requestMeta.js

@@ -0,0 +1,18 @@
+function getClientIp(req) {
+  const forwarded = req.headers["x-forwarded-for"];
+
+  if (forwarded) {
+    return forwarded.split(",")[0].trim();
+  }
+
+  return req.socket?.remoteAddress || req.connection?.remoteAddress || null;
+}
+
+function getUserAgent(req) {
+  return req.headers["user-agent"] || "";
+}
+
+module.exports = {
+  getClientIp,
+  getUserAgent,
+};