- Add health_alerts column to pets table (migration 0001)
- Update DB schema, shared types, and API Zod validation
- Show health alerts prominently (red badge) in pet cards
- Add health alerts field to pet form with allergy/condition placeholder
- Add delete button per pet with confirmation dialog
- Add delete client button with cascade warning
Closesgroombook/groombook#2
Co-Authored-By: Paperclip <noreply@paperclip.ing>