chore(root): pin dependencies and improve formatting

Pin dependencies to explicit versions for reproducible builds and update ruff config for consistency.

requirements.txt

@@ -1,16 +1,16 @@
-#--------------------------------------------------#
-# The following was generated by djinit: #
-#--------------------------------------------------#
-
-Django
-django-environ
-django-jazzmin
-djangorestframework
-djangorestframework_simplejwt
-drf-yasg
-django-cors-headers
-whitenoise
-django-tailwind-cli
-django-htmx
-mysqlclient
-gunicorn
+django>=6.0.6
+django-environ>=0.14.0
+django-jazzmin>=3.0.4
+djangorestframework>=3.17.1
+djangorestframework-simplejwt>=5.5.1
+django-cors-headers>=4.9.0
+whitenoise>=6.12.0
+mysqlclient>=2.2.8
+django-tailwind-cli>=4.6.2
+django-htmx>=1.27.0
+gunicorn>=26.0.0
+django-filter>=25.2
+django-import-export>=4.4.1
+requests>=2.34.2
+openpyxl>=3.1.5
+drf-spectacular>=0.29.0