Fix issue #13: Add the option to sort PRs

[neubig]

This pull request fixes #13.

The issue has been successfully resolved. The AI implemented a complete sorting functionality for pull requests that addresses the original request. Specifically, they:

1. Added a sorting mechanism that allows users to sort PRs by multiple characteristics:

   • Creation date (both ascending and descending)
   • Last update date (both ascending and descending)
   • PR number (both ascending and descending)

2. Implemented the feature with proper architecture:

   • Created a SortOption interface for type safety
   • Added state management for sorting preferences
   • Implemented the actual sorting logic in sortPullRequests
   • Integrated a UI component (Select) for users to choose sorting options

3. Ensured quality by adding tests to verify the sorting functionality

The implementation appears complete, functional (all tests passing), and provides the requested ability to sort PRs by various characteristics, which directly fulfills the original issue request. The solution is well-structured and includes both the backend logic and user interface components necessary for the feature to work.

Automatic fix generated by OpenHands 🙌

[neubig]

@openhands-agent linting is failing, please fix.

[neubig]

OpenHands started fixing the pr! You can monitor the progress here.

[neubig]

Concise overview of changes:

OpenHands successfully resolved the linting issues that were causing the build to fail. Specifically:

1. Fixed linting problems in PullRequestViewer.tsx
2. Removed an unused import in PullRequestViewer.test.tsx
3. Confirmed all linting checks now pass without errors or warnings

Based on the information provided, it appears that all issues have been successfully resolved. The changes directly address the feedback given in the PR thread comment, and the agent has confirmed that the project now passes all linting checks. There are no indications of any remaining issues.