Prepare OpenAI Codex for OSS application submission package

[Lkkisme]

This issue tracks the final owner-side preparation for the OpenAI Codex for OSS application.

Draft source: https://github.com/Lkkisme/Cap/blob/main/docs/codex-for-oss-application.md

Checklist:

• Confirm first name, last name, email, and OpenAI organization ID.
• Use repository URL https://github.com/Lkkisme/Cap.
• Use fork-scoped maintainer role language.
• Paste the <=500 character project qualification answer.
• Paste the <=500 character API credits use answer.
• Keep a local copy or screenshot of the final submitted answers.
• Record any OpenAI follow-up request in this issue or docs/maintenance-log.md.