Added unit to db and structs/types.

server/migrations/20260126175759_unit.sql

@@ -0,0 +1,35 @@
+-- Add migration script here
+CREATE TABLE unit
+(
+    id bigint NOT NULL GENERATED ALWAYS AS IDENTITY ( INCREMENT 1 START 0 MINVALUE 0 ),
+    name text NOT NULL,
+    display text NOT NULL,
+    CONSTRAINT unit_id PRIMARY KEY (id)
+        INCLUDE(id)
+);
+
+-- Insert units
+INSERT INTO unit (name, display) VALUES ('KG', 'kg');
+INSERT INTO unit (name, display) VALUES ('G', 'g');
+INSERT INTO unit (name, display) VALUES ('L', 'l');
+INSERT INTO unit (name, display) VALUES ('ML', 'ml');
+INSERT INTO unit (name, display) VALUES ('Stk', 'Stk');
+
+-- Alter article and variant table to add unit
+ALTER TABLE public.variant
+    ADD unit_id bigint NOT NULL DEFAULT 1,
+    ADD CONSTRAINT variant_unit_id_fkey
+       foreign key (unit_id)
+           references unit(id)
+           ON DELETE NO ACTION;
+
+ALTER TABLE public.article
+    ADD default_unit_id bigint NOT NULL DEFAULT 1,
+    ADD CONSTRAINT article_unit_id_fkey
+        foreign key (default_unit_id)
+            references unit(id)
+            ON DELETE NO ACTION;
+
+-- Add display text to origin table
+ALTER TABLE public.origin
+    ADD display text NOT NULL DEFAULT 'NOT SET';