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docs(merge-queue): changelog for PR detail attempt deep linking and bisection UI #272

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docs(merge-queue): changelog for PR detail attempt deep linking and bisection UI #272

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19 changes: 19 additions & 0 deletions changelog/2026-06-24-merge-queue-pr-detail-attempt-improvements.mdx
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---
title: "Merge Queue: Shareable Attempt Links and Richer Bisection Timeline"
description: "The merge queue PR detail page now deep-links to specific test attempts, splits attempts at bisection boundaries, and shows richer batch and bisection timeline copy."
date: 2026-06-24
category: Merge Queue
type: update
---

**The PR detail page in the merge queue now supports shareable attempt links, bisection-aware attempt splitting, and richer timeline entries for batch and bisection runs.**

- **Shareable attempt links.** Add `?attempt=N` to any PR detail URL to link directly to a specific test attempt. The picker reads the URL on load, rejects invalid values gracefully, and defaults to the latest attempt. Useful for sharing a bisection attempt in a Slack thread or issue comment.
- **Bisection-aware attempt splitting.** Attempts now split at bisection re-admission boundaries, so each bisection test is its own entry in the attempt picker. An attempt that includes bisection isolation testing shows a **Bisected** label in the picker.
- **Richer timeline entries.**
- Batch test titles link to batchmates and speculative batch or branch URLs.
- Solo speculative runs link the anchor PR instead of using the generic "batch" label.
- Bisection runs show isolation-specific copy in their event entries.
- Batch restarts that removed a single PR link that PR; restarts that removed multiple PRs use plain text.
- **Queue time for superseded attempts.** Superseded attempts (those no longer the latest) now stop their queue-time clock at the point they left the queue, rather than continuing to count elapsed time.

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