DATABASE_URL=postgresql://gradeapp:postgres@127.0.0.1:5432/student_archive
SECRET_KEY=dev-secret-key-change-in-production
CORS_ORIGINS=http://localhost:5173,http://localhost:23566
UPLOAD_DIR=uploads
BACKUP_DIR=/root/grade-archive-backups
BACKUP_RETENTION_DAYS=30
AUTO_BACKUP_INTERVAL_HOURS=24
API_PORT=23568
OLLAMA_BASE_URL=http://127.0.0.1:11434
OLLAMA_MODEL=qwen2.5:7b
OCR_SERVICE_URL=
OCR_API_KEY=
FLUCTUATION_THRESHOLD=0.08