Phase 1 of W4d GLP-1 full integration. Forward-only additive migration: a
new `medication_category` enum (GENERIC | GLP1) lands as
`medications.treatment_class` (defaults to GENERIC so existing rows render
exactly as before). `medications.doses_per_unit` lets pen/vial-tracked
meds carry their dose count. `medication_intake_events.injection_site`
captures the 8-zone body-map pick — nullable; non-GLP-1 meds never set
it. `medication_dose_changes` holds titration history (Mounjaro 2.5 → 5
→ 7.5 → 10 → 12.5 → 15 mg per Eli Lilly's PI). `medication_inventory_events`
is the append-only ledger backing the low-stock dashboard caption.
Naming nuance: the new column is `treatmentClass`, not `category`, because
the existing `medication_categories` side-table already owns the
`category` slot in the API response (clinical taxonomy:
BLOOD_PRESSURE / VITAMIN / ...). Two orthogonal concepts, two columns.
Marc-André Bombeck
cbcc0598b2