fix(windows): windows branch switch ui broken

[EwanJordaan]

What Changed

• Moved selected-row styling into the shared combobox and autocomplete primitives
• Removed branch-selector-specific selected styling
• Fixed the Windows branch switch UI so the hover effect renders consistently

Why

The branch switcher already controls selection through the combobox value state, but the selected styling was partly hardcoded in the branch selector itself. That made the UI behavior inconsistent and more fragile.

This change moves selected-state styling into the shared combobox/autocomplete primitives so visual state is handled consistently through the existing data-selected, data-highlighted, and hover behaviors.

By relying on the shared primitives instead of custom styling in the branch selector, the UI behavior becomes predictable across combobox-based components and resolves the Windows branch selection hover issue.

UI Changes

Before:

• The selected branch row could render incorrectly or inconsistently in the branch switch UI on Windows
• Hovering over branches did not update the highlighted row visually

After:

• The selected branch row uses the shared selected-state styling
• Hover, highlighted, and selected states are now consistent with the shared combobox/autocomplete behavior
• Hover highlighting follows the cursor correctly in the branch switch UI

Video:

Screen.Recording.2026-03-13.195339.mp4

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for the UI change
• I included a video for animation/interaction changes

Issue #1040

Note

Fix branch selector UI styling on Windows

• Adds a branchSelectorHighlightClassName constant to BranchToolbarBranchSelector.tsx with dark (#242424) background and white text for hover, selected, and highlighted states, replacing a broken conditional bg-accent class.
• Updates combobox.tsx and autocomplete.tsx to add hover:bg-accent, data-selected:bg-accent/50, and data-selected:text-foreground to item base styles.
• Behavioral Change: The active branch item no longer receives a custom accent style outside of the component's selected/highlighted state; all visual feedback now comes from data attributes.

^{Macroscope summarized d3f6d4f.}

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on this repository. Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: ab882fc8-12d4-46f6-9b8a-6647da313122

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

📝 Coding Plan

• Generate coding plan for human review comments

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

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

Tip

You can make CodeRabbit's review stricter and more nitpicky using the `assertive` profile, if that's what you prefer.

Change the reviews.profile setting to assertive to make CodeRabbit's nitpick more issues in your PRs.