- Add inline editing UI for mileage correction field in fault detail page
- Implement save/cancel buttons for mileage correction updates
- Add updateMileageCorrection API endpoint and service method
- Update App.vue global styles with page background color
- Enhance pages.json with backgroundColorTop and backgroundColorBottom
- Add MileageCorrectionDto for request validation
- Implement batch fault times retrieval for export functionality
- Add fault frequency time concatenation in export data
- Improve export data structure with complete fault history information
