CronTrigger had no explicit timezone, defaulting to system timezone
(UTC in Docker containers), causing jobs to run at KST 03:00/03:30
instead of the intended 18:00/18:30.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- APScheduler for daily snapshots (18:30 weekdays)
- ReturnsCalculator with CAGR, TWR, MDD, volatility
- Portfolio history page with snapshots and returns tabs
- FastAPI lifespan integration for scheduler
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
