💊 Advil Reminder

Backend service. Reminders run over SMS (Telnyx) on a per-minute scheduler (Supabase pg_cron → /api/tick). Reply DONE, a number of minutes to snooze, or DONE @3:05pm to log a time.

• POST /api/tick?key=… — scheduler heartbeat
• POST /api/webhooks/telnyx?key=… — inbound SMS
• GET /api/state?key=… — current dose state
• POST /api/dose?key=… — done / snooze / skip / edit (iOS, Phase 2)