This migration will automatically run during deployment and update
all existing quarterly confirmation deadlines to the new semester-based system:
- Q1: March 15 (Spring semester primary submission)
- Q2: June 15 (auto-approved when Q1 approved)
- Q3: September 15 (Fall semester primary submission)
- Q4: December 15 (auto-approved when Q3 approved)
No manual intervention required on VPS - GitHub Action will deploy and migrate automatically.