Pin django-ninja and add CI setup sanity checks

[NaitikRishu]

What

Pin django-ninja to 1.4.1 and add setup sanity checks in CI.

Why

Fresh installs can resolve django-ninja to 1.5.x, but current code uses ModelSchema Config style compatible with 1.4.x. This causes manage.py migrate failures in clean environments.

Changes

• Pin django-ninja in pyproject.toml
• Add compatibility note in README.md
• Add setup-sanity job in CI that runs:
  • poetry install
  • poetry run python manage.py check
  • poetry run python manage.py migrate --noinput

Validation

• Local poetry run python manage.py check passes
• Local poetry run python manage.py migrate --noinput passes

[NaitikRishu]

What

Pin django-ninja to 1.4.1 and add setup sanity checks in CI.

Why

Fresh installs can resolve django-ninja to 1.5.x, but current code uses ModelSchema Config style compatible with 1.4.x. This causes manage.py migrate failures in clean environments.

Changes

• Pin django-ninja in pyproject.toml
• Add compatibility note in README.md
• Add setup-sanity job in CI that runs:
  • poetry install
  • poetry run python manage.py check
  • poetry run python manage.py migrate --noinput

Validation

• Local poetry run python manage.py check passes
• Local poetry run python manage.py migrate --noinput passes