-- device_templates currently has manufacturer_id (a FK into the normalized
-- `manufacturers` table), but nothing in the app populates or reads it yet —
-- organized-ideas.md §3 calls for manufacturer to eventually be a normalized,
-- submittable catalog like device categories, but wiring that up (browse-by-
-- manufacturer view, its own submission flow) is its own chunk of work.
-- For this pass (public catalog read integration), keep manufacturer as
-- plain free text on the template, matching the domain model's existing
-- `DeviceTemplate.manufacturer?: string` — the same shape it's always had
-- when templates lived embedded in each diagram. manufacturer_id is left in
-- place, unused, for the future normalization pass rather than dropped.
alter table public.device_templates add column manufacturer text;