improvement(cleanup): remove useWorkflowDiff hook

[icecrasher321]

Summary

useWorkflowDiff was dead code

Type of Change

• Bug fix

Testing

No functional change.

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	Preview	Comments	Updated (UTC)
docs	Skipped			Oct 31, 2025 7:04pm

[greptile-apps]

Greptile Overview

Greptile Summary

Removed the unused useWorkflowDiff React hook and its associated type exports. The hook was 325 lines of code that handled workflow diff operations including backup/restore functionality, checkpoint creation, and state management, but was confirmed to have no active usage in the codebase.

• Deleted apps/sim/lib/workflows/diff/use-workflow-diff.ts (325 lines)
• Removed exports from apps/sim/lib/workflows/diff/index.ts for useWorkflowDiff and UseWorkflowDiffReturn
• The WorkflowDiffEngine class and its types remain in diff-engine.ts and are still exported, which is correct since they may be used elsewhere

Confidence Score: 5/5

• This PR is safe to merge with no risk
• This is a straightforward removal of dead code with no runtime impact. Codebase search confirms zero usage of useWorkflowDiff or UseWorkflowDiffReturn, and the remaining exports (WorkflowDiffEngine and its types) are unaffected
• No files require special attention

Important Files Changed

File Analysis

Filename	Score	Overview
apps/sim/lib/workflows/diff/index.ts	5/5	Removed exports for useWorkflowDiff hook and UseWorkflowDiffReturn type
apps/sim/lib/workflows/diff/use-workflow-diff.ts	5/5	Deleted entire file containing unused useWorkflowDiff hook implementation (325 lines)

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Index as index.ts
    participant Hook as use-workflow-diff.ts
    participant Codebase as Codebase

    Note over Dev,Codebase: Before PR
    Codebase->>Hook: No imports found
    Index->>Hook: Exports useWorkflowDiff
    Index->>Hook: Exports UseWorkflowDiffReturn
    Note over Hook: 325 lines of dead code

    Note over Dev,Codebase: After PR
    Dev->>Hook: Delete file
    Dev->>Index: Remove hook exports
    Note over Index: Only WorkflowDiffEngine remains
    Note over Codebase: 325 lines removed

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