Design Codex command/runbook adapter for former Claude slash commands

[ethanolivertroy]

Context

The source repo exposes workflows as Claude Code slash commands such as:

• /grc-engineer:gap-assessment
• /grc-engineer:scan-iac
• /github-inspector:collect
• /oscal:*
• /fedramp-ssp:*

Codex app may not support Claude Code plugin command registration or the same slash-command dispatch model. Many command files may still be useful as Markdown runbooks, but they need a Codex-compatible invocation strategy.

Tasks

• Inventory all plugins/**/commands/*.md files.
• Classify command types:
  • pure prompt/runbook
  • script-backed command
  • external CLI wrapper
  • cloud/SaaS connector requiring credentials
  • Claude-only command
• Define a Codex invocation pattern, for example:
  • npm run <script> for script-backed workflows
  • docs/runbooks/*.md for prompt/runbook workflows
  • task prompt templates for Codex app
• Decide whether to generate a command index such as docs/CODEX-COMMANDS.md.
• Add examples translating Claude commands to Codex tasks.

Acceptance Criteria

• There is a documented mapping from major Claude slash commands to Codex-compatible actions.
• Unsupported commands are explicitly marked unsupported/deferred instead of silently failing.