chore(release): bump to v5.18.0

Author: jdalton

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [5.18.0](https://github.com/SocketDev/socket-lib/releases/tag/v5.18.0) - 2026-04-14
+
+### Added — dlx
+
+- Socket Firewall API check before package downloads — resolves dependency tree via `buildIdealTree`, checks all packages against `firewall-api.socket.dev/purl` in parallel, blocks on critical/high severity alerts
+### Changed — http-request
+
+- Default `User-Agent` header updated from `socket-registry/1.0` to `socketsecurity-lib/{version}`
+
 ## [5.17.0](https://github.com/SocketDev/socket-lib/releases/tag/v5.17.0) - 2026-04-14
 
 ### Added — paths

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@socketsecurity/lib",
-  "version": "5.17.0",
+  "version": "5.18.0",
   "packageManager": "pnpm@11.0.0-rc.0",
   "license": "MIT",
   "description": "Core utilities and infrastructure for Socket.dev security tools",