README: add the agentmods badge

agentmods measures the plugin — token cost, a security scan, provenance — and
the badge is generated from that reading rather than written here, so it says
what the catalogue currently measures rather than what was true on commit day.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018Z9DWjijv4Ar1sM3GKiKSb

Author: iOSDevSK

README.md

@@ -1,5 +1,7 @@
 # html2wp — convert HTML to a WordPress theme
 
+[![agentmods](https://agentmods.dev/badge/plugins/iosdevsk/html2wp-cc-plugin/html2wp-cc-plugin.svg)](https://agentmods.dev/plugins/iosdevsk/html2wp-cc-plugin/html2wp-cc-plugin)
+
 **HTML to WordPress — compared pixel by pixel against the original, and still editable.**
 
 A Claude Code and Codex plugin that converts HTML to WordPress: a static site, or