typeddjango/django-stubs

AI Summary: This GitHub issue proposes integrating `mypy_primer` into the CI pipelines for `django-stubs` and `djangorestframework-stubs`. The tool would run mypy on various projects before and after PR changes, reporting diffs to provide early visibility into potential type-checking breakage. A key challenge is that custom project definitions would be needed, as `mypy_primer`'s default projects do not use Django.