fix(web): round the trailing PR checks hover surface

[parzival1l]

Fix the square hover highlight on the trailing PR checks button with last:rounded-e-lg, while keeping inner segments square.

Before / after

Rendered at 200% panel zoom; cropped without resizing image pixels.

Before	After

Verification

• Dev browser on macOS: trailing checks corners change from 0px to 10px; checks before Fix stay square. The popover works, and neighboring controls keep their rounded corners.
• 181 focused PR logic/status tests pass. Targeted lint, web typecheck, and web build pass.
• Electron and mobile remain untested.

Replaces #16543. This is a small, focused visual bug fix with no product behavior change.

Model: GPT-6.1 Sol. Harness: OpenCode through T3 Code.

[coderabbitai]

Important

Review skipped

Review was skipped as selected files did not have any reviewable changes.

⚙️ Run configuration

• Configuration used: Path: .coderabbit.config.ts
• Review profile: CHILL
• Plan: Advanced
• Run ID: 90381c2e-e1e8-4867-b378-05e338ca790e

📥 Commits

Reviewing files that changed from the base of the PR and between 930ed01 and 8790173.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Path: .coderabbit.config.ts
• Review profile: CHILL
• Plan: Advanced
• Run ID: 16c460bc-4f49-49bf-ae9c-61adf3375700

📥 Commits

Reviewing files that changed from the base of the PR and between 9503155 and 69f0ccb.

📒 Files selected for processing (1)

• apps/web/src/components/chat/threadDetailsPanelStyles.ts

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.

---

📝 Walkthrough

Walkthrough

The shared split-check styling now rounds the end corner of the last control.

Changes

Split-check styling

Layer / File(s)	Summary
Round the last split-check control apps/web/src/components/chat/threadDetailsPanelStyles.ts	THREAD_DETAILS_PANEL_SPLIT_CHECKS_CLASS adds last:rounded-e-lg. Other controls retain the existing shared styling.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix · Severity of issue fixed: Low

Suggested reviewers: rakshithbhat03

Merge Risk: ⚪ Minimal · up to 815a6

The final split-check segment gains rounded end corners while preceding segments remain square. No material regression is established, so the change is ready for normal checks.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title clearly and concisely describes the trailing PR checks hover-surface fix.
Description check	✅ Passed	The description explains the problem and change, provides before-and-after screenshots, reports focused verification and untested platforms, and states why the focused fix needs no prior approval.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

---

_{Comment @coderabbitai help to get the list of available commands.}

[tinsever]

lgtm!

[HaseebUllahButt]

why can i comment

[macroscopeapp]

Approvability

Verdict: Approved at 8790173

Macroscope's review found this PR approvable — This is a focused one-line web UI fix that rounds only the trailing PR checks hover surface. It does not alter product defaults, application behavior, APIs, or static-analysis configuration.

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