Fix “Open file in project" option in the right-click menu not working

[peakxy]

Objective

Fix file header context menu actions in multi-file Git history diffs. Previously, Open File in Project worked for the first file but did nothing for subsequent files.

Fixes #60790

Solution

Include the buffer ID in each file header context menu's GPUI element ID. This prevents multiple file headers in split diff views from sharing the same menu state.

Testing

• Ran cargo check -p editor --lib.
• Ran cargo fmt --package editor -- --check.
• Reviewers can test by opening a multi-file commit from Git Panel → History in split diff mode, then using Open File in Project on the second and subsequent file headers.

CleanShot.2026-07-11.at.18.18.24.mp4

Self-Review Checklist:

• I've reviewed my own diff for quality, security, and reliability
• Unsafe blocks (if any) have justifying comments
• The content adheres to Zed's UI standards (UX/UI and icon guidelines)
• Tests cover the new/changed behavior
• Performance impact has been considered and is acceptable

---

Release Notes:

• Fixed opening project files from context menus in multi-file Git history diffs.

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: 徐一峰.
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email email@example.com
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[Copilot]

Pull request overview

Fixes a GPUI element ID collision that caused file-header context menu actions (notably Open File in Project) to stop working on the 2nd+ file when viewing multi-file Git history diffs.

Changes:

• Makes the buffer header’s right-click menu element ID unique per buffer by keying it with buffer_id.to_proto(), preventing shared menu state between multiple headers.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[peakxy]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[peakxy]

@dinocosta hi, please take a look again at your convenience