[BUG] PR status badge is shown in every session's composer, not only the session that created the PR

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

In the Claude Code desktop app, when a Pull Request is created from one session,
the PR status badge (branch name + PR number + diff stats, e.g. "⎇ 37
claude/implement-stg-12-L5qbo +4,614 −122 CI") is rendered at the bottom of the
composer in EVERY session of the project — not only in the session that actually
opened the PR.

The badge is project-global instead of session-scoped. It appears identically in
unrelated sessions ("Implement STG-12 initiative", "implement-initiative skill",
"Review pull request 37 and commit comments", etc.), making it impossible to tell
from which session the PR was created. This badly breaks navigation between
sessions.

What Should Happen?

The PR status badge should be scoped to the session that created the Pull Request.
Other sessions of the same project should not display that badge in their composer.

Error Messages/Logs

Steps to Reproduce

1. Open the Claude Code desktop app on a project with multiple sessions.
2. In one session, create a Pull Request (or have the agent create it).
3. Switch to any other session of the same project.
4. Observe the composer: the PR badge from step 2 is shown there as well.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.133 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

This bug is in the Claude Code desktop app (macOS, Apple Silicon), not the CLI —
the Terminal/Shell field above is not applicable.

macOS 26.4.1 (Tahoe), MacBook Pro 14" M4 Max.

Claude 1.7196.0 (2dbd78) 2026-05-12T05:34:40.000Z

The PR badge ("⎇ 37 claude/implement-stg-12-L5qbo +4,614 −122") leaks into the
composer of all sessions in the project. Screenshots attached showing the same
badge in four different unrelated sessions.

<img width="3248" height="2122" alt="Image" src="https://github.com/user-attachments/assets/cda10244-0874-4222-92b3-f19c1f3d3ede" />

<img width="3248" height="2122" alt="Image" src="https://github.com/user-attachments/assets/43885603-dac9-4602-a588-1fedba913395" />