Ran oxc (https://oxc.rs/docs/guide/usage/linter.html#vscode-extension) and fixed all the issues that came up, set it up to run as a PR check and added steps to the README.md asking users to use it.
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
* **New Features**
* Introduced JavaScript linting using oxlint in development guidelines and CI workflow for improved code quality.
* Added oxlint configuration and dependencies to the project.
* **Bug Fixes**
* Improved error logging in various components and utilities for better debugging.
* Enhanced React list rendering by updating keys to use unique values instead of array indices, reducing rendering issues.
* Replaced browser alerts with toast notifications for a smoother user experience.
* **Refactor**
* Simplified component logic and state management by removing unused code, imports, props, and components across multiple files.
* Updated function and component signatures for clarity and maintainability.
* Improved efficiency of certain operations by switching from arrays to sets for membership checks.
* **Chores**
* Cleaned up and reorganized import statements throughout the codebase.
* Removed deprecated files, components, and middleware to streamline the codebase.
* **Documentation**
* Updated contribution guidelines to include linting requirements for code submissions.
* **Style**
* Minor formatting and readability improvements in JSX and code structure.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Description
Fixed label folder structure in the sidebar by updating the `color` prop type from `number` to `string` in the file tree component. Also improved the folder hierarchy logic to properly handle nested labels and prevent duplicate folder entries when a label with the same name as a folder exists.
The changes ensure that:
1. Label colors are properly passed through the component hierarchy
2. Folders with the same name as a label are properly merged
3. The bookmark icon styling is fixed to properly display colors
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
* **New Features**
* Improved label grouping in the sidebar to prevent redundant folder labels and ensure accurate folder metadata.
* Consistent color information is now displayed for all labels and folders.
* **Style**
* Updated label and folder color handling for a more uniform appearance.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
