improvement(ui): reuse chips for custom block upload actions

[BillLeoutsakosvl346]

Summary

• Use the existing outlined Chip for custom-block Upload/Change and the icon Button for Remove.
• Center the actions beside the preview and preserve upload callbacks, accepted file types, loading states and permission guards.

Type of Change

• Refactor / maintainability improvement

Testing

• All workspace type checks, repository lint, audits (including import and API validation), and generated-artifact checks pass.
• Complete EMCN suite and relevant existing consumer tests pass.
• Existing real-component browser fixtures cover both themes, narrow layouts, enlarged text, disabled states and local upload/change/remove callbacks. These do not exercise the live upload service.

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 21, 2026 4:17am UTC

[cubic-dev-ai]

No issues found across 8 files

Confidence score: 5/5

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

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[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge because the control refactor preserves the existing interaction, accessibility, and permission behavior.

Summary

This PR updates the custom-block icon controls to use the shared Chip treatment for Upload/Change and the icon-sized Button treatment for Remove.

• Preserves upload, change, and removal callbacks.
• Preserves loading and permission-based disabled states.
• Vertically centers the action controls beside the icon preview.

_{Reviews (3) · Last reviewed commit: "fix(ui): retain existing workflow resour..."}

[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 10 files

Confidence score: 5/5

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

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[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 1 file

Confidence score: 5/5

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

_{Re-trigger cubic}