- Change Question entity time fields from Date to LocalDateTime for Java 8+ time API consistency
- Add auto-fill annotation for updateTime field in Question and QuestionSubmit entities
- Simplify Serializable import in QuestionQueryRequestDTO
- Temporarily set SecurityConfiguration to permit all requests for development
- Remove generated .flattened-pom.xml build artifacts from version control
Co-Authored-By: Claude <noreply@anthropic.com>