scripts/run-weekly-checkins.ps1: pure-Windows equivalent of the cron script —
reads the admin API key from .env and POSTs /discovery/coaching/run via
Invoke-RestMethod, logging to data/coaching-cron.log. README documents the
Register-ScheduledTask command (weekly, StartWhenAvailable + WakeToRun) for a
more robust schedule than WSL cron.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Joel Salmon