workspace-level multi-repo support in Codex app

What variant of Codex are you using?

app

What feature would you like to see?

Feature request: workspace-level multi-repo support in Codex app

I use Codex app for a full-stack project where frontend and backend are separate Git repositories under one parent workspace.

Current issue:

• If I start Codex in the frontend repo, the agent can edit both frontend and backend files.
• But the diff panel only shows changes for the current repo.
• This makes cross-repo development harder to review and manage, even though the actual task often spans both repositories.

Why this matters:

• Many real-world projects are split into multiple repos (frontend, backend, docs, shared packages).
• A single product task often requires coordinated changes across repos.
• VS Code / Cursor workspace can show multiple repositories together, but Codex app currently feels limited to a single repo view.

Requested improvement:

• Add workspace support for parent directories containing multiple Git repositories.
• Show diffs grouped by repository in one thread.
• Allow separate Git actions per repo (status, branch, commit, worktree), while still treating the task as one workspace-level effort.
• Optionally allow a thread to attach multiple repos explicitly.

Ideal UX:

• Open a workspace like Next
• Detect Frontend, Api, and Docs as separate repos
• Let one agent work across them
• Show a unified review panel with repo-separated diffs

This would make Codex much more practical for full-stack and monorepo-adjacent workflows.

Additional information

_No response_