feat: Add reveal buffer if already open (#63306)

# Objective

Fixes #12572

## Solution

- Adds an opt-in `reveal_if_open` setting which enables searching and
revealing an already open buffer
- Ensures this only happens if there is no pane target for the open
intent

## Testing

- Built for and tested on my Mac
- Tests added covering the scope of the feature

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

## Showcase


https://github.com/user-attachments/assets/cdcc78cd-85fd-4b56-b562-feba375ecd03

---

Release Notes:

- Added configuration to reveal buffers already open in a different pane
instead of the active pane, via `reveal_if_open`

---------

Co-authored-by: Christopher Biscardi <chris@christopherbiscardi.com>
351899e531Sean Wood committed on 8/28/2026, 11:51:00 AM· committed by GitHubparentcf1900f
11 files changedLine totals unavailable