Refactor production and stock tests to remove UOM dependency

- Updated production.spec.ts, stock-adjustments.spec.ts, and stock-transfers.spec.ts to eliminate UOM references in API seeder and test cases.
- Adjusted ApiSeeder methods to remove UOM parameters from stock receiving and production template creation.
- Revised documentation to reflect changes in UOM handling, emphasizing that stock is counted in base UOM only.
- Introduced new enums for MeasureUnit and StageQtyUnit to clarify content size and stage input quantities.
- Implemented ItemContent service to validate and normalize content sizes.
- Updated smoke tests to validate production stage inputs expressed in content units, ensuring correct consumption calculations.
- Modified frontend UOM label handling to reflect the removal of per-line UOMs in document lines.

Testing/e2e/specs/grn.spec.ts

@@ -1,5 +1,5 @@
 import { test, expect, APIRequestContext } from "@playwright/test"
-import { ApiSeeder, newApiContext, Vendor, Warehouse, Item, Uom } from "../support/api"
+import { ApiSeeder, newApiContext, Vendor, Warehouse, Item } from "../support/api"
 import { GrnNewPage, GrnDetailPage } from "../pages/GrnPages"
 
 // GRN receiving flow (Backend/ERPCore/Controllers/GrnsController.cs, Frontend
@@ -10,14 +10,12 @@ test.describe("GRN", () => {
   let seeder: ApiSeeder
   let warehouse: Warehouse
   let vendor: Vendor
-  let uom: Uom
   let item: Item
 
   test.beforeAll(async () => {
     api = await newApiContext()
     seeder = new ApiSeeder(api)
     warehouse = await seeder.firstWarehouse()
-    uom = await seeder.firstUom()
     vendor = await seeder.createVendor()
     item = await seeder.createItem({ namePrefix: "GRN Test Item" })
   })
@@ -32,7 +30,7 @@ test.describe("GRN", () => {
     await grnNew.useDirectReceipt()
     await grnNew.selectVendor(vendor.name)
     await grnNew.selectWarehouse(warehouse.name)
-    await grnNew.fillFirstLine({ item: item.name, uom: uom.name, qty: 10, unitCost: 50 })
+    await grnNew.fillFirstLine({ item: item.name, qty: 10, unitCost: 50 })
     await grnNew.submit()
 
     await expect(page).toHaveURL(/\/dashboard\/receiving\/grn\/\d+/)
@@ -53,7 +51,7 @@ test.describe("GRN", () => {
       vendorId: vendor.vendorId,
       warehouseId: warehouse.warehouseId,
       itemId: item.itemId,
-      uomId: uom.uomId,
+
       qty: 5,
       unitPrice: 40,
     })
@@ -76,7 +74,7 @@ test.describe("GRN", () => {
     await grnNew.useDirectReceipt()
     await grnNew.selectVendor(vendor.name)
     // Warehouse intentionally left unselected.
-    await grnNew.fillFirstLine({ item: item.name, uom: uom.name, qty: 1, unitCost: 10 })
+    await grnNew.fillFirstLine({ item: item.name, qty: 1, unitCost: 10 })
     await grnNew.submit()
 
     await expect(page).toHaveURL(/\/dashboard\/receiving\/grn\/new/)
@@ -87,7 +85,7 @@ test.describe("GRN", () => {
       warehouseId: warehouse.warehouseId,
       vendorId: vendor.vendorId,
       itemId: item.itemId,
-      uomId: uom.uomId,
+
       qty: 8,
       unitCost: 12,
     })
@@ -110,7 +108,7 @@ test.describe("GRN", () => {
       warehouseId: warehouse.warehouseId,
       vendorId: vendor.vendorId,
       itemId: item.itemId,
-      uomId: uom.uomId,
+
       qty: 3,
       unitCost: 12,
     })