Add consignment_detail table for consignment inventory

Separate table linked to product — keeps product table clean
when most items are not consignment. Tracks consignor (account),
commission percentage, min price, and agreement date.
33 tests passing.

packages/backend/src/db/schema/inventory.ts

@@ -166,6 +166,26 @@ export type PriceHistory = typeof priceHistory.$inferSelect
 export type StockReceipt = typeof stockReceipts.$inferSelect
 export type StockReceiptInsert = typeof stockReceipts.$inferInsert
 
+export const consignmentDetails = pgTable('consignment_detail', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  productId: uuid('product_id')
+    .notNull()
+    .references(() => products.id),
+  companyId: uuid('company_id')
+    .notNull()
+    .references(() => companies.id),
+  consignorAccountId: uuid('consignor_account_id').notNull(),
+  commissionPercent: numeric('commission_percent', { precision: 5, scale: 2 }).notNull(),
+  minPrice: numeric('min_price', { precision: 10, scale: 2 }),
+  agreementDate: date('agreement_date'),
+  notes: text('notes'),
+  isActive: boolean('is_active').notNull().default(true),
+  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+})
+
+export type ConsignmentDetail = typeof consignmentDetails.$inferSelect
+export type ConsignmentDetailInsert = typeof consignmentDetails.$inferInsert
+
 export type Product = typeof products.$inferSelect
 export type ProductInsert = typeof products.$inferInsert
 export type InventoryUnit = typeof inventoryUnits.$inferSelect