* Add OpenAI plugin submission bundle
Build a Codex-native OpenAI plugin with bundled hooks, public listing metadata, submission guidance, privacy coverage, and regression tests.
AI assistance: OpenAI Codex prepared and validated these changes under maintainer direction.
* Fix provider script command rendering
Replace heuristic rewrites across executable scripts with one explicit provider marker, render pinned shortcuts per target harness, and remove the personal email from the public publisher manifest.
Addresses automated review feedback on PR #363.
AI assistance: OpenAI Codex prepared and validated these changes under maintainer direction.
