/resume does not list sessions started via Zed Codex agent integration

What happened?

When I start a conversation from the Zed Codex agent integration, that session does not appear in the Codex CLI /resume list.

Steps to reproduce

1. Start a Codex session from Zed (Codex agent integration).
2. Open Codex CLI and run /resume.
3. Observe that the Zed-started session is missing.

Expected behavior

Sessions started via Zed integration should be discoverable in /resume, so they can be continued from the CLI.

Actual behavior

Only CLI-started sessions are listed; Zed-started sessions are not, so continuation is not possible.

Impact

Breaks conversation continuity across clients and makes earlier discussions effectively non-resumable from CLI.

Related context

A similar issue was reported and resolved in cagent: https://github.com/docker/cagent/issues/1591

Could Codex align behavior so sessions from integrations are also resumable via /resume?