The en-US Intl format is MM/DD/YYYY but the regex parsing was assigning
capture group 1 (month) to day and capture group 2 (day) to month.
For day 26+ this created an invalid month value (26), causing
RangeError: Invalid time value when formatting the date.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add scheduledTime, scheduledDay, timezone fields to Agent schema
- Create calculateNextRun() helper with timezone-aware scheduling
- Add POST /api/cron/agents endpoint for external scheduler
- Calculate nextRun on agent create, update, and after execution
- Add time/day picker in agent form (daily/weekly/monthly)
- Show "Next run" countdown in agent card
- Add i18n keys for schedule UI (FR + EN)
External scheduler (N8N, Vercel Cron) should call /api/cron/agents
every 5-15 min. Requires `prisma db push` to apply schema changes.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
