feat(warehouses): gate double-handling fee on a per-booking Yes/No

Double handling billed every import with a matching rule. Add
bookings.double_handling (+ set_at/by), charge only when Yes, expose a
PATCH endpoint (import-only, locked after invoicing, audited) and Yes/No
items in the inventory row menu.

apps/edr-freight-api/src/modules/warehouses/dto/double-handling.dto.ts

@@ -0,0 +1,14 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsBoolean } from 'class-validator';
+
+/**
+ * Warehouse staff's post-unloading answer: did these goods have to be
+ * re-handled? Only `true` makes the DOUBLE_HANDLING_FEE rule bill the booking.
+ */
+export class SetDoubleHandlingDto {
+  @ApiProperty({
+    description: 'Yes (true) applies the double-handling fee rule; No (false) does not.',
+  })
+  @IsBoolean()
+  doubleHandling!: boolean;
+}