feat(25-01): add attribution columns and unique constraint to globalItems

- Add sourceUrl, imageCredit, imageSourceUrl nullable columns
- Add unique constraint on (brand, model) pair
- Generate migration 0003_loving_serpent_society.sql

src/db/schema.ts

@@ -133,17 +133,24 @@ export const setupItems = pgTable("setup_items", {
 
 // ── Global Items ────────────────────────────────────────────────────
 
-export const globalItems = pgTable("global_items", {
-	id: serial("id").primaryKey(),
-	brand: text("brand").notNull(),
-	model: text("model").notNull(),
-	category: text("category"),
-	weightGrams: doublePrecision("weight_grams"),
-	priceCents: integer("price_cents"),
-	imageUrl: text("image_url"),
-	description: text("description"),
-	createdAt: timestamp("created_at").defaultNow().notNull(),
-});
+export const globalItems = pgTable(
+	"global_items",
+	{
+		id: serial("id").primaryKey(),
+		brand: text("brand").notNull(),
+		model: text("model").notNull(),
+		category: text("category"),
+		weightGrams: doublePrecision("weight_grams"),
+		priceCents: integer("price_cents"),
+		imageUrl: text("image_url"),
+		description: text("description"),
+		sourceUrl: text("source_url"),
+		imageCredit: text("image_credit"),
+		imageSourceUrl: text("image_source_url"),
+		createdAt: timestamp("created_at").defaultNow().notNull(),
+	},
+	(table) => [unique().on(table.brand, table.model)],
+);
 
 // ── Tags ───────────────────────────────────────────────────────────