feat: complete admin panel and backend admin api migration

apps/api/src/modules/orders/dto/create-order.dto.ts

@@ -1,5 +1,6 @@
 import { Type } from 'class-transformer';
-import { ArrayMinSize, IsArray, IsInt, IsNumber, IsOptional, IsPositive, IsString, Min, ValidateNested } from 'class-validator';
+import { OrderChannel } from '@prisma/client';
+import { ArrayMinSize, IsArray, IsEnum, IsInt, IsNumber, IsOptional, IsPositive, IsString, Min, ValidateNested } from 'class-validator';
 
 export class CreateOrderItemInputDto {
   @IsString()
@@ -31,6 +32,15 @@ export class CreateOrderDto {
   @IsString()
   branchId?: string;
 
+  /**
+   * Which sales channel placed the order. Legacy had no such field because the
+   * two channels lived in separate tables (orders vs orders_orders); the one
+   * Order model carries the distinction here. Defaults to RETAIL.
+   */
+  @IsOptional()
+  @IsEnum(OrderChannel)
+  channel?: OrderChannel;
+
   @IsArray()
   @ArrayMinSize(1)
   @ValidateNested({ each: true })

apps/api/src/modules/orders/orders.controller.ts

@@ -2,7 +2,9 @@ import { Body, Controller, Get, Param, Patch, Post } from '@nestjs/common';
 import { OrdersService } from './orders.service';
 import { CreateOrderDto } from './dto/create-order.dto';
 import { UpdateOrderStatusDto } from './dto/update-order-status.dto';
+import { Public } from '../auth/guards';
 
+@Public() // pre-existing unauthenticated endpoint; see Phase 1 notes
 @Controller('orders')
 export class OrdersController {
   constructor(private readonly orders: OrdersService) {}

apps/api/src/modules/orders/orders.service.ts

@@ -1,5 +1,5 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
-import { OrderStatus, Prisma } from '@prisma/client';
+import { OrderChannel, OrderStatus, Prisma } from '@prisma/client';
 import { PrismaService } from '../../prisma/prisma.service';
 import { CatalogService } from '../catalog/catalog.service';
 import { LedgerService } from '../accounting/ledger.service';
@@ -80,6 +80,7 @@ export class OrdersService {
           orderNumber: this.generateOrderNumber(),
           customerId: dto.customerId,
           branchId: dto.branchId,
+          channel: dto.channel ?? OrderChannel.RETAIL,
           status: initialStatus,
           totalGoldWeightGrams,
           wageWeightGrams,