Scope Codex chat history to the current workspace by default

What variant of Codex are you using?

IDE Extension

What feature would you like to see?

Problem

The Codex IDE extension currently shows chat history from all projects in the chat list.

When working across multiple repositories, this makes the chat history noisy and harder to use. A user working in repo-a usually expects the chat sidebar to show conversations related to repo-a, not sessions from unrelated projects.

This also increases the risk of accidentally opening or continuing the wrong conversation with context from another codebase.

Proposed behavior

The chat history should be scoped to the current workspace/repository by default.

The extension should provide a visible filter in the chat history UI:

• Current project
• All projects

Default: Current project

Additional information

_No response_