- Add testcase handling with proper input/output validation
- Modify run function to process multiple testcases sequentially
- Implement testcase result recording in database
- Improve error handling and status updates
- Add related type definitions for testcases
- Change return type from JudgeResult to Submission
- Add database operations to persist submission records
- Improve error handling and container cleanup
- Update compile and run functions to work with submissions
- Add proper status updates throughout the process