Where to add production files?

I think in almost all hardware projects, there are specific production files, that are sort of an export specifically for production purpose only.

If we link this to #9 this might look like:

.
|-- assets
|-- docs
|-- src
| |-- export
| `-- README.md
|-- BOM.csv
|-- LICENSE.md
`-- README.md

or

.
|-- assets
|-- docs
|-- src
| |-- production
| `-- README.md
|-- BOM.csv
|-- LICENSE.md
`-- README.md

or

.
|-- assets
| |-- production
| `-- README.md
|-- docs
|-- src
|-- BOM.csv
|-- LICENSE.md
`-- README.md

this is not easy to decide on as this is linked to the question of having #8 and if production includes pdf technical drawings to the production entity or if this in general should be part of a more general export folder in assets? or it could also be a general root folder called prod ?