feat: add auto-save draft support for form editor

[KumarManglam-123]

Description

This PR adds an auto-save draft feature to the form editor to prevent data loss during form creation or editing.

The implementation automatically saves form state to localStorage on field changes and restores the last saved draft when the editor is reopened. This improves reliability and user experience for long or complex forms.

Related Issue

Resolves #47

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix
• Breaking change
• Documentation update
• UI/UX improvement
• Performance improvement
• Code refactoring
• Test update

Checklist

• I have read the CONTRIBUTING.md guidelines
• I have read the CODE_OF_CONDUCT.md
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings or errors
• I have tested my changes locally

AI Disclosure

• Did you use AI tools to generate or assist with this code? Yes

If yes:

• Tool used: ChatGPT
• AI-assisted parts: Hook design and logic optimization guidance
• Code reviewed manually: Yes

Testing

• Tested locally
• Tested in production-like environment
• Added unit tests
• Added integration tests

Environment:

• Node: 18+
• Browser: Chrome
• OS: Windows

Additional Notes

Draft saving uses browser localStorage and does not affect backend APIs.

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[github-actions]

✅ PR Checklist Complete

Great job @KumarManglam-123! Your PR follows all the guidelines. A maintainer will review it soon. Thank you for your contribution! 🙏

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Project	Deployment	Actions	Updated (UTC)
genform.ai	Ready	Preview, Comment	Mar 1, 2026 2:26pm

[KumarManglam-123]

Auto-save draft feature implemented and tested locally. Please review. Thanks!

[Amansingh0807]

We actually don't need the changes in package-lock.json and package.json file. Otherwise it looks good to me.

[KumarManglam-123]

Hi @Amansingh0807,
I’ve reverted the unintended changes in package.json and package-lock.json and pushed the update.
Kindly review when convenient. Thank you!

[Amansingh0807]

Nice formatting and auto-save! However, you accidentally removed crucial UI for field types, options, and the live form preview. Please restore these core features so we can merge.
In FormEditor.tsx, you accidentally removed core features (field types, options UI, and live preview). Please restore them alongside your auto-save changes so we can merge.

[KumarManglam-123]

Hi ,
I’ve restored the field type selector, options UI, required toggle, and live preview while keeping the auto-save functionality intact.
Tested locally including draft restore and clearing after save.
Thank you!

[Amansingh0807]

Everything Looks good to me. Thank you for Contributing.

[KumarManglam-123]

Everything Looks good to me. Thank you for Contribution.

Thanks for the approval and support. This is my last contribution