chore: add Socket.dev badge with auto-version via release-please (#75)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: marcstraube

README.md

@@ -4,6 +4,7 @@
 [![Node.js Version](https://img.shields.io/node/v/@zappzarapp/browser-utils.svg)](https://www.npmjs.com/package/@zappzarapp/browser-utils)
 [![License](https://img.shields.io/npm/l/@zappzarapp/browser-utils.svg)](https://www.npmjs.com/package/@zappzarapp/browser-utils)
 [![CI](https://github.com/marcstraube/zappzarapp-node-browser-utils/actions/workflows/ci.yml/badge.svg)](https://github.com/marcstraube/zappzarapp-node-browser-utils/actions/workflows/ci.yml)
+[![Socket Badge](https://badge.socket.dev/npm/package/@zappzarapp/browser-utils/1.2.0)](https://badge.socket.dev/npm/package/@zappzarapp/browser-utils/1.2.0)
 
 Zero-dependency browser utilities with security-first design — type-safe,
 tree-shakeable, and fully tested.

release-please-config.json

@@ -6,6 +6,13 @@
       "package-name": "@zappzarapp/browser-utils",
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
+      "extra-files": [
+        {
+          "type": "generic",
+          "path": "README.md",
+          "regex": "badge\\.socket\\.dev/npm/package/@zappzarapp/browser-utils/(?<version>[\\d\\.]+)"
+        }
+      ],
       "changelog-sections": [
         {
           "type": "feat",