Project sessions should not clutter the global Recents list

What variant of Codex are you using?

Codex Desktop App for Mac

What feature would you like to see?

Problem

Sessions created within a Codex project currently also appear individually in the global Recents section.
As the number of project sessions grows, Recents becomes increasingly cluttered and makes it harder to distinguish standalone sessions from sessions that already have an organizational home.

Current behavior

A session associated with a project appears:

• Under its project
• Again as an individual entry in Recents
  This effectively duplicates project sessions in the navigation.

Suggested behavior

Project-associated sessions should primarily live under their respective project folder and not appear individually in the global Recents list.
Alternatively, an option such as “Hide project sessions from Recents” could preserve the current behavior for users who prefer it.

Why this would help

This would:

• Reduce sidebar clutter
• Make projects more useful as organizational containers
• Make standalone/recent conversations easier to find
• Scale better for users with many sessions per project
  I’ve attached a screenshot showing how quickly the current behavior causes the Recents section to become cluttered.

Additional information

No response

No files or tests are named. Start by reproducing the behavior in the Codex Desktop App for Mac and trace how project sessions are represented in the project and global Recents navigation. Done means project sessions no longer clutter Recents, or a clearly documented preference lets users hide them while preserving the existing option.