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/migrations/0006_add_consignment.sql

@@ -0,0 +1,15 @@
+CREATE TABLE "consignment_detail" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"product_id" uuid NOT NULL,
+	"company_id" uuid NOT NULL,
+	"consignor_account_id" uuid NOT NULL,
+	"commission_percent" numeric(5, 2) NOT NULL,
+	"min_price" numeric(10, 2),
+	"agreement_date" date,
+	"notes" text,
+	"is_active" boolean DEFAULT true NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "consignment_detail" ADD CONSTRAINT "consignment_detail_product_id_product_id_fk" FOREIGN KEY ("product_id") REFERENCES "public"."product"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "consignment_detail" ADD CONSTRAINT "consignment_detail_company_id_company_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."company"("id") ON DELETE no action ON UPDATE no action;

packages/backend/src/db/migrations/meta/_journal.json

@@ -43,6 +43,13 @@
       "when": 1774653515690,
       "tag": "0005_add_products_units_receipts",
       "breakpoints": true
+    },
+    {
+      "idx": 6,
+      "version": "7",
+      "when": 1774653924179,
+      "tag": "0006_add_consignment",
+      "breakpoints": true
     }
   ]
 }