Add Codex SkillForge

Author: f0d010c

README.md

@@ -209,6 +209,8 @@ For this curated list, the machine-readable source of truth is the generated rep
 
 After scaffolding with `$plugin-creator`, use [codex-plugin-scanner](https://github.com/hashgraph-online/codex-plugin-scanner) as your quality gate before publishing, review, or distribution.
 
+For skill/plugin authoring workflows, [Codex SkillForge](https://github.com/f0d010c/skillforge) provides an ESLint-style CLI and GitHub Action for scaffolding, linting, smoke-testing, and packaging Codex skills/plugins before publishing.
+
 ### Local Preflight
 
 ```bash