feat: add dark/light mode toggle button

[anshiky73-svg]

Close #94

✨ Feature Added: Dark / Light Mode Toggle

• Added a dark/light theme toggle button

• Preserved all existing UI and functionality

• No breaking changes

• Theme preference persists using JavaScript

• Your code follows the project's coding standards

• All file changes are accurate and intentional

• You've tested your changes locally

• Any review comments have been addressed

This improves accessibility and user experience.

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[github-actions]

🎉 Thanks for the PR, @anshiky73-svg!

We really appreciate you taking the time to contribute to OpenPlayground! 💙

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🔗 https://github.com/Renu-code123/ExpenseFlow

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✅ PR Checklist

Before we review, please ensure:

• Your code follows the project's coding standards
• All file changes are accurate and intentional
• You've tested your changes locally
• Any review comments have been addressed

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🙌 Thank You for Contributing!

We truly appreciate your interest in contributing to this project.

• Please make sure your code follows the project structure
• Add clear commit messages and comments where necessary
• Ensure your changes do not break existing functionality

We'll review your PR as soon as possible. Keep up the great work! ✨

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[Renu-code123]

@anshiky73-svg resolve conflict

[anshiky73-svg]

@anshiky73-svg resolve conflict

hi @Renu-code123 i reviewed everything and didn't find any conflicts . I don't know why its showing like this (This branch has conflicts that must be resolved) but it is also showing changes can be cleanly merged

[anshiky73-svg]

hi @Renu-code123 i resolved all the conflicts now it is ready to be merged

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Project	Deployment	Review	Updated (UTC)
expenseflow	Ready	Preview, Comment	Jan 24, 2026 5:27pm