feat(web): resolve review threads from the Summary and Timeline tabs

[TonybynMp4]

Problem

Review threads can only be resolved from the Code tab. Summary and Timeline already show which threads are resolved, but to change that you have to switch to Code and find the line again, usually right after reading or replying to the thread in the conversation.

Change

The first comment of each review thread in Summary and Timeline gets a Resolve or Unresolve button, including comments inside the "resolved or dismissed" group. Replies don't get one, so a thread with five replies has one button, not five.

It uses the same setThreadResolution command as the Code tab and the same checks (capabilities.review.resolve and viewerPermissions.resolve), so it appears only for hosts and accounts that can resolve. The button stays disabled until the refreshed thread shows the new state, so it doesn't re-enable with the old label in between. On failure it re-enables and shows the same error toast as the Code tab.

This is web only. Desktop gets it from web, and mobile is out of scope per the discussion.

Scope and approval

Proposed in #14922 as the first of two separate PRs. Applying suggestions will be a separate PR. That discussion has no maintainer reply yet. #10176 touched the same gap but was closed for bundling unrelated workflows, so this PR only adds the button.

Verification

Checked by hand in dev:desktop against a GitHub PR with open and resolved threads:

• Resolve from the Summary tab: the thread moves into the "resolved or dismissed" group, and the button there reads Unresolve.
• Unresolve from inside that group: the thread moves back out.
• Resolve and Unresolve from the Timeline tab.
• Replies get no button in either tab. Summary already lists a thread's replies as separate comment cards, and resolving the thread moves its comments into the resolved group together. This PR doesn't change that layout.
• The button stays disabled from the click until the panel shows the new state.

Lint and typecheck are clean for the changed files.

Not checked: GitLab and Bitbucket. They use the same command and capability flags, but I didn't test them.

Related: while testing, the panel sometimes kept the old state after a Resolve until the next refresh. That's the cache race in #14113 (details in this comment), not this PR, and #14122 or #14654 fixes it.

Before

Summary	Timeline

After

Summary, open thread	Summary, resolved group

Timeline:

Written with Claude Opus 5.5 in Claude Code, run from T3 Code.

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Reviewing files that changed from the base of the PR and between 7334e31 and 6c14440.

📒 Files selected for processing (1)

• apps/web/src/components/pullRequest/PullRequestResolveThreadButton.tsx

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📝 Walkthrough

Walkthrough

Adds a permission-gated control to resolve or unresolve review threads. The summary and timeline tabs show the control beside comments that opened a thread, including collapsed resolved or dismissed comments.

Changes

Review thread resolution

Layer / File(s)	Summary
Resolution control and thread lookup apps/web/src/components/pullRequest/PullRequestResolveThreadButton.tsx	Adds a control that requests the opposite thread state when host capabilities and viewer permissions allow it. The control waits for refreshed thread state, refreshes after success, and shows an error toast after failure. Adds a helper that returns a thread only for its opening comment.
Comment surface integration apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx, apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx	Adds the control beside comments that opened threads in the summary and timeline tabs. The summary tab also passes it to collapsed resolved or dismissed comments.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 6c144

The Summary and Timeline controls use the existing permission checks and refresh after updates; no material merge-blocking failure is established.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 6c144

The new buttons retain existing permission checks and do not demonstrate added authority or an authorization bypass. Provider authentication and behavior during concurrent updates remain incompletely verified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The added interaction targets review-thread resolution state using the same environment and provider operation already available from Code. No broader credential authority is demonstrated. The maximum scope of a forged thread identifier remains bounded by existing provider authorization and identity enforcement, which were not completely verified.

Trust Boundaries and Controls

• observed — Supported provider adapters forward the requested resolution state through existing native operations. The server rejects unsupported resolution capability before dispatch. These controls predate the new callers; lower-level credential loading was not inspected.

Resilience and Maintainability Implications

• inferred — If a refreshed object still reports the old state, the control can re-enable before the requested state is observed. A subsequent click would submit the same desired boolean, rather than automatically reverse the mutation. Server invalidation and the existing Code path's earlier pending release counter a material containment-regression claim; provider read-after-write and concurrent-update outcomes remain uncertain.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the problem, change, scope, and verification, and includes before-and-after screenshots. However, the Scope and approval section says the discussion has no maintainer reply an…	Add a maintainer approval comment for the proposed scope, or explain why this focused change qualifies for an exemption from prior approval.
Docstring Coverage	⚠️ Warning	Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: adding review-thread resolution controls to the Summary and Timeline tabs.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description explains the problem, change, scope, and verification, and includes before-and-after screenshots. However, the Scope and approval section says the discussion has no maintainer reply and does not explain why this feature qualifies for an approval exemption.

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Inline comments:
Review comments at
@apps/web/src/components/pullRequest/PullRequestResolveThreadButton.tsx:
- Around line 45-59: Update the successful path in toggle so a stale thread
state from onRefresh does not leave requested set and the button disabled; clear
the pending request when the refresh does not reflect the requested resolution,
while preserving the existing failure handling.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository: pingdotgg/t3code/.coderabbit.yaml
• Review profile: CHILL
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• Run ID: 17448c29-0e91-4916-bb21-f48d08137c63

📥 Commits

Reviewing files that changed from the base of the PR and between 77823bd and 7334e31.

📒 Files selected for processing (3)

• apps/web/src/components/pullRequest/PullRequestResolveThreadButton.tsx
• apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx
• apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx

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