improvement(ui): reuse compact buttons for message actions

[BillLeoutsakosvl346]

Summary

• Use the existing compact Button treatment for Copy, Like, Dislike and Fork message actions.
• Keep command handlers, accessible names, tooltips and pending guards. Normalize the 26px footprint to the existing fixed 24px size and shared corners/hover treatment.

Type of Change

• Refactor / maintainability improvement

Testing

• Full workspace type checks, lint, repository audits (including import and API validation), generators and docs checks pass.
• Complete EMCN suite and relevant existing consumer tests pass.
• Isolated browser fixtures cover light/dark, narrow layouts and the affected controls; picker checks cover keyboard selection, search, editable overlays, multiple selection, modal Escape and focus restoration.
• 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)

[BillLeoutsakosvl346]

@greptile

[BillLeoutsakosvl346]

@cubic-dev-ai review this PR

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1 Skipped Deployment

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[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.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge, with no outstanding correctness, security, or repository-rule issues.

Summary

This PR standardizes Copy, Like, Dislike, and Fork message actions on the shared compact EMCN Button treatment.

• Replaces custom 26px native buttons with the shared 24px compact fixed-size variant.
• Preserves accessible labels, tooltips, handlers, and the pending-disabled fork guard.
• Updates the focused test mock to support the shared Button component.

_{Reviews (2) · Last reviewed commit: "improvement(ui): reuse compact buttons f..."}

[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.

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[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}

[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 2 files

Confidence score: 5/5

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

_{Re-trigger cubic}