adding complete db migrations from posgres

Testing/e2e/support/api.ts

@@ -66,32 +66,58 @@ export class ApiSeeder {
     return res.json()
   }
 
-  // --- reference data (relies on DataSeeder's MAIN/SHOP/PCS/BOX/General Goods seed) -----
+  // --- reference data: get-or-create ------------------------------------------------
+  //
+  // These used to assume DataSeeder had planted MAIN/SHOP warehouses, PCS/BOX UOMs and a
+  // "General Goods" category, and threw if they were missing. That demo data was removed
+  // with the MySQL port so a fresh database is production-shaped, so each helper now creates
+  // what it needs. This also removes the suite's hidden dependency on seed data that a real
+  // deployment would never have.
 
   async firstWarehouse(): Promise<Warehouse> {
     const page = await this.get<{ items: Warehouse[] }>("/warehouses?page=1&pageSize=1")
-    if (!page.items.length) throw new Error("No warehouses found - expected DataSeeder's MAIN warehouse to exist.")
-    return page.items[0]
+    if (page.items.length) return page.items[0]
+    return this.createWarehouse("E2E Main")
   }
 
   async secondWarehouse(): Promise<Warehouse> {
     const page = await this.get<{ items: Warehouse[] }>("/warehouses?page=1&pageSize=10")
-    if (page.items.length < 2) throw new Error("Need at least 2 warehouses (DataSeeder seeds MAIN + SHOP).")
-    return page.items[1]
+    if (page.items.length >= 2) return page.items[1]
+    await this.firstWarehouse()
+    return this.createWarehouse("E2E Secondary")
   }
 
   async firstUom(): Promise<Uom> {
     const page = await this.get<{ items: Uom[] }>("/uoms?page=1&pageSize=1")
-    if (!page.items.length) throw new Error("No UOMs found - expected DataSeeder's PCS uom to exist.")
-    return page.items[0]
+    if (page.items.length) return page.items[0]
+    return this.post<Uom>("/uoms", { name: `E2E-UOM-${uniqueSuffix()}` })
   }
 
   async firstCategory(): Promise<Category> {
     const page = await this.get<{ items: Category[] }>("/categories?page=1&pageSize=1")
-    if (!page.items.length) throw new Error("No categories found - expected DataSeeder's General Goods category.")
+    if (page.items.length) return page.items[0]
+    return this.post<Category>("/categories", { name: `E2E Category ${uniqueSuffix()}` })
+  }
+
+  /** The deployment's default branch (BR-000), seeded by DataSeeder.EnsureDefaultBranchAsync. */
+  async firstBranch(): Promise<{ branchId: number; code: string }> {
+    const page = await this.get<{ items: { branchId: number; code: string }[] }>(
+      "/branches?page=1&pageSize=1")
+    if (!page.items.length) throw new Error("No branches found - expected the seeded BR-000 branch.")
     return page.items[0]
   }
 
+  async createWarehouse(namePrefix = "E2E Warehouse"): Promise<Warehouse> {
+    const suffix = uniqueSuffix()
+    // branchId is required whenever warehouse branching is enabled, which it is by default.
+    const branchId = (await this.firstBranch()).branchId
+    return this.post<Warehouse>("/warehouses", {
+      code: `E2E-W-${suffix}`,
+      name: `${namePrefix} ${suffix}`,
+      branchId,
+    })
+  }
+
   // --- writes used to build test fixtures -------------------------------------------
 
   async createVendor(namePrefix = "E2E Vendor"): Promise<Vendor> {