feat(bookings): Implement document upload API for DRAFT bookings

apps/edr-freight-api/src/modules/bookings/bookings.controller.ts

@@ -147,6 +147,18 @@ export class BookingsController {
     return this.bookingsService.remove(id);
   }
 
+  @Post(':id/documents')
+  @UseInterceptors(AnyFilesInterceptor())
+  @ApiConsumes('multipart/form-data')
+  @ApiOperation({ summary: 'Upload documents for a booking (DRAFT only)' })
+  async uploadDocuments(
+    @Param('id', ParseUUIDPipe) id: string,
+    @UploadedFiles() files: Express.Multer.File[],
+  ) {
+    const booking = await this.bookingsService.uploadDocuments(id, files ?? []);
+    return this.transitionService.enrichBookingResponse(booking);
+  }
+
   @Post(':id/generate-price')
   @ApiOperation({ summary: 'Generate price preview (DRAFT only)' })
   @ApiOkResponse({ type: GeneratePriceResponseDto })