Adds a UnitCategoryFlags column to Product, FamilyProduct, and
FamilyProductOverride so each product can advertise which unit categories
it is typically packaged by (e.g. flour: Weight | Volume). The product
endpoints round-trip the flag, search projects the effective value with
the override applied, and the frontend QuantityInput soft-filters its
dropdown by the selected product's flag, with a "show all units" escape
hatch for ad-hoc overrides.
No backend rejection on a unit outside the allowed set — the flag is
purely a hint. Default value is None (no filter), so existing data is
unaffected.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Josh Rogers
fd6b0accc8