feat(starter): in start block input format, don't prevent deletion if only one field remaining, just clear form

[waleedlatif1]

Summary

• in start block input format, don't prevent deletion if only one field remaining, just clear form

Type of Change

• New feature

Testing

tested manually

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	Review	Updated (UTC)
docs	Skipped		Jan 15, 2026 5:21am

[greptile-apps]

Greptile Summary

This PR improves UX for the start block input format by allowing users to clear the last remaining field instead of preventing deletion. Previously, the delete button was disabled when only one field remained; now, clicking delete on the last field resets it to a fresh default field instead of blocking the action.

The implementation is clean and straightforward:

• Updated removeField logic to detect when deleting the last field and reset to a default field
• Removed the fields.length === 1 condition from the button's disabled state
• Updated function documentation to reflect new behavior

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The change is a simple UX improvement with clear logic: instead of disabling delete on the last field, it resets to a default field. The implementation is straightforward, maintains existing readonly/disabled checks, and aligns with common form patterns where users can clear fields rather than being blocked from deletion.
• No files require special attention

Important Files Changed

Filename	Overview
apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/starter/input-format.tsx	Changed removeField function to clear form when deleting last field instead of preventing deletion; removed disabled state on delete button when only one field remains

Sequence Diagram

sequenceDiagram
    participant User
    participant DeleteButton
    participant removeField
    participant Store
    participant UI

    User->>DeleteButton: Click delete on last field
    DeleteButton->>removeField: removeField(fieldId)
    
    alt isReadOnly
        removeField-->>User: Return early (no action)
    else fields.length === 1
        removeField->>Store: setStoreValue([createDefaultField()])
        Store->>UI: Re-render with fresh empty field
        UI-->>User: Display cleared field
    else fields.length > 1
        removeField->>Store: setStoreValue(filtered fields)
        Store->>UI: Re-render without deleted field
        UI-->>User: Display remaining fields
    end

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