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fix(web): a thread started from a pull request links it - #15848
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lnieuwenhuis wants to merge 4 commits into
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lnieuwenhuis wants to merge 4 commits into
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Checking out a pull request into a thread (the chat checkout dialog, the pull request panel's checkout hand-off, and pull request hand-off actions) pointed the draft at the PR branch but never recorded a link, so linked-PR sync, watching and the Pull requests panel ignored it. The draft now carries the pull request and the branch it was checked out on, and the first send that turns the draft into a thread links it through the same path as the Link pull request dialog. The link is made only while the draft is still on that branch: right after a local checkout the live branch sync briefly writes the pre-checkout branch back before fresh git status lands, so clearing on any branch change would lose it. Fixes pingdotgg#15721
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ApprovabilityVerdict: Would Approve Macroscope's review found this PR approvable — This is a focused web bug fix that carries an optional PR reference through existing draft checkout flows and links the resulting thread using established APIs, with compatibility handling and targeted tests. The unresolved comments identify narrow asynchronous edge cases, but they are correctness-gate risks rather than evidence of a broader feature, schema, infrastructure, security, or configuration change. Not approved because:
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…t mid-checkout A draft sent while its pull request checkout was still running reads no pending pull request at send, and the checkout's follow-up only linked when the new thread's shell had already reached the client. A thread whose shell arrived later stayed unlinked. ChatView now records the draft threads whose send already read the draft. When a checkout lands on one of them (or on a promoted draft, or an existing thread), it waits for the thread shell with the bounded waitForThreadShell and links it then. An unsent draft still links at its first send, and the record is taken together with the send's read so each checkout links once. Refs pingdotgg#15721
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📝 WalkthroughWalkthroughPull request checkout flows now retain the pull request URL and branch in draft state. ChatView uses that context to link the pull request to the thread when the thread shell exists or the first send succeeds. ChangesPull request checkout linking
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: Low Sequence Diagram(s)sequenceDiagram
participant PullRequestThreadDialog
participant ChatView
participant ComposerDraftStore
participant usePullRequestLinking
PullRequestThreadDialog->>ChatView: Pass prepared pull request URL
ChatView->>ComposerDraftStore: Store checkout URL and branch
ChatView->>ChatView: Wait for thread shell or successful send
ChatView->>usePullRequestLinking: Link pull request URL to scoped thread
Suggested reviewers: Merge Risk: 🔵 Low · up to When checkout finishes after the first send, the resulting thread can remain unlinked to its pull request. This narrow timing issue warrants a fix or explicit acceptance before merge. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change is narrowly scoped and reuses existing linking controls. Linking remains separate from thread creation, however, and interrupted or overlapping checkout and send actions are not fully proven to preserve the intended association. Retained concerns Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @apps/web/src/components/ChatView.tsx:
- Around line 2862-2888: Update the checkout-completion callback around
openOrReuseProjectDraftThread to carry the original draft ID through the handoff
instead of relying on the possibly newly created threadId. Use the original ID
to detect and link its promoted thread after the send lands; if it has not
landed, retain the checkout metadata on that draft for its next send.
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📒 Files selected for processing (9)
apps/web/src/components/ChatView.logic.test.tsapps/web/src/components/ChatView.logic.tsapps/web/src/components/ChatView.tsxapps/web/src/components/PullRequestThreadDialog.tsxapps/web/src/components/pullRequest/PullRequestDetailPanel.test.tsxapps/web/src/components/pullRequest/PullRequestDetailPanel.tsxapps/web/src/components/pullRequest/usePullRequestActions.tsapps/web/src/composerDraftStore.test.tsapps/web/src/composerDraftStore.ts
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Fixes #15721
Checking out a pull request into a thread moved the thread onto the PR branch but never recorded a link. Linked-PR sync, watching and the Linked pull requests panel didn't treat it as the thread's pull request, so it had to be linked by hand afterwards. This covers the chat checkout dialog (also reached from the branch picker), the pull request panel's checkout hand-off, and pull request hand-off actions.
Linking inside
GitManager.preparePullRequestThreadon the server, as the issue suggests, doesn't work. On every web path the thread that receives the PR branch is still a client-side draft when the checkout runs, so the server has no thread to link yet. In the chat dialog the branch also lands on a reused or new draft, not the thread you started from.So the draft now carries the pull request (
checkoutPullRequest: { url, branch }, optional and persisted, so older saved drafts still load). The first send that turns the draft into a thread links it throughusePullRequestLinking().changeLink, the same path as the Link pull request dialog (sourcemanual, so there's no contract change). If the draft already became a thread while the checkout ran, it's linked right away. A failed link only logs a warning and never blocks the send.The link is made only if the draft is still on the checked-out branch when it's sent. After a local checkout the server refreshes git status in the background, so the live branch sync in
GitActionsControlbriefly writes the pre-checkout branch back onto the draft before the fresh status lands. An earlier version of this change cleared the pending link on any branch change, and that lost it on every local checkout; I caught it while verifying in the browser. Switching the draft to a different branch before sending still means no link.Before / after
Same flow on
mainand on this branch: in a GitHub-backed project, branch picker →#15837→ Checkout pull request → Local, then send a first message.Before: the thread is on the PR branch (the sidebar badge comes from branch discovery), but nothing is linked, so "Linked pull requests" is disabled.
After: "Linked pull requests" is available, and the panel lists the PR (1 open · 1 linked).
The server's thread projection agrees: on
mainthe new thread has nopullRequestsentry, and on this branch it has#15837with sourcemanual.Verification
composerDraftStoretests cover: the PR surviving the stale branch write that follows a local checkout; no link once the draft is on another branch; attaching to a draft already on the branch (hand-off path); explicit clearing and clearing on a project change; and saving/restoring, including older drafts without the field.vp test runoncomposerDraftStore.test.ts,PullRequestDetailPanel.test.tsx,useHandleNewThread.test.tsandGitActionsControl.logic.test.tsall pass. Web typecheck is clean.vp run devagainst isolated state in a real browser (Local checkout path), with the result confirmed in the thread projection.Model/harness: Claude Opus 5.5 / Claude Code.