improvement(ui): share workflow panel tab buttons

[BillLeoutsakosvl346]

Summary

• Share the Chat, Toolbar and Editor button treatment within the workflow panel.
• Keep selection, hydration conditions, tab data attributes and the existing 28px geometry and hover states.

Type of Change

• Refactor / maintainability improvement

Testing

• Full workspace type checks, lint, repository audits (including import and API validation), generators and docs checks pass.
• External source comparison confirms caller logic and content are unchanged.
• Before/after browser fixtures cover the changed component's styling and interactions. Original and extracted controls have matching computed styles. These are isolated fixtures, not full authenticated product flows.
• Relevant existing tests pass. No landing-page changes or audit tooling included.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Sep 20, 2026 11:51pm UTC

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Re-trigger cubic}

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge because the latest change fixes the barrel-import concern without introducing a new behavioral or rule-compliance issue.

Summary

The PR extracts the workflow panel’s Chat, Toolbar, and Editor controls into a shared PanelTabButton while preserving their existing behavior and appearance.

• Adds a compact shared panel-tab button component.
• Replaces three duplicated button definitions with the shared component.
• Exports and consumes the component through the existing components barrel.

_{Reviews (2) · Last reviewed commit: "chore(ui): export panel tab button throu..."}

[BillLeoutsakosvl346]

@greptile

[BillLeoutsakosvl346]

@cubic-dev-ai review this PR

[cubic-dev-ai]

@cubic-dev-ai review this PR

@BillLeoutsakosvl346 I have started the AI code review. It will take a few minutes to complete.

[cubic-dev-ai]

No issues found across 3 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Re-trigger cubic}