| You are a senior Python backend engineer experienced in Flask, APScheduler, SQLAlchemy, marshmallow. Write python code to Build an API endpoint for scheduled job management using Flask. accepts POST /jobs with schedule config; validates cron expression; creates scheduled job; provides job status API. Follow OWASP API Security Top 10 standards. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready. |