fix(web): mark pull request links as external

[juliusmarminge]

The pull request number in the detail header opened the host, but it looked like plain text and kept the default cursor. This adds an external-link icon and a pointer cursor in both expanded and condensed header states.

Before

After

Validation

• vp fmt apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx --check
• vp lint apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx --report-unused-disable-directives
• vp run --filter @t3tools/web typecheck
• Verified in the web client that the link renders an external-link SVG and computes to cursor: pointer

Built with GPT-5.6 Codex in T3 Code.

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Note

Low Risk
Presentation-only tweaks in the PR detail header; no changes to navigation, permissions, or data handling.

Overview
Makes the pull request number in PullRequestDetailPanel read clearly as an external link in both the normal and condensed header layouts.

The #number control keeps the same openExternal click and context-menu behavior, but now uses inline-flex with cursor-pointer, a small gap, and an ExternalLinkIcon beside the number so it no longer looks like plain text.

^{Reviewed by Cursor Bugbot for commit 31bc96b. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add ExternalLinkIcon to pull request links in PullRequestDetailPanel

Updates the two buttons that open a pull request on the host (regular and condensed render paths) to include an ExternalLinkIcon after the PR number, and adjusts their className to use inline-flex, items-center, gap-0.5, and cursor-pointer. Click behavior and tooltips are unchanged.

^{Macroscope summarized 31bc96b.}

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	13.3 KiB	13.3 KiB	+15 B (+0.1%)	15.1 KiB	✅
Codex	Thread snapshot wire	6.9 KiB	6.9 KiB	−1 B (−0.0%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	6.4 KiB	6.4 KiB	+16 B (+0.2%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	55.6 KiB	55.6 KiB	0 B (0.0%)	66.4 KiB	✅
Codex	Live turn messages	11	11	0 (0.0%)	21	✅
Claude	Total thread wire	13.3 KiB	13.3 KiB	−13 B (−0.1%)	15.1 KiB	✅
Claude	Thread snapshot wire	6.9 KiB	6.9 KiB	+7 B (+0.1%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	6.5 KiB	6.4 KiB	−20 B (−0.3%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	56.4 KiB	56.4 KiB	0 B (0.0%)	66.4 KiB	✅
Claude	Live turn messages	11	11	0 (0.0%)	21	✅

Baseline: 3f62e6f · PR result: 31bc96b · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 109.4 KiB
• Claude decoded thread snapshot: 110.1 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[macroscopeapp]

Approvability

Verdict: Approved at 31bc96b

Macroscope's review found this PR approvable — This single-file UI change only clarifies an already-existing external pull-request action in both header layouts. Click behavior, context menus, tooltips, data handling, and product defaults remain unchanged.

^{You can add or adjust custom eligibility rules. Learn more.}