refactor: streamline environment variable handling using django-environ

uv.lock

@@ -333,6 +333,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d5/9d/9a0ba39f33574994e5b33aea55a68e8fad72b8dd923a82300e4e91774f59/django_compressor-4.6.0-py3-none-any.whl", hash = "sha256:6e7b21020a0d86272c5e37000c33accc4ebeb77394a3dd86d775a09aae7aade4", size = 96828, upload-time = "2025-11-10T13:12:10.001Z" },
 ]
 
+[[package]]
+name = "django-environ"
+version = "0.13.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/18/3c/60983e6ec9b24a8d8588eecebfd21123cba980bce0a905807a27692f0860/django_environ-0.13.0.tar.gz", hash = "sha256:6c401e4c219442c2c4588c2116d5292b5484a6f69163ed09cd41f3943bfb645f", size = 63529, upload-time = "2026-02-18T01:08:08.791Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/c4/00/3767393ece946084e1c6830a33ffb8e39d68642e27ad5ac7d4c8bd5de866/django_environ-0.13.0-py3-none-any.whl", hash = "sha256:37799d14cd78222c6fd8298e48bfe17965ff8e586091ad66a463e52e0e7b799e", size = 20682, upload-time = "2026-02-18T01:08:07.359Z" },
+]
+
 [[package]]
 name = "django-ninja"
 version = "1.6.2"
@@ -536,6 +545,7 @@ dependencies = [
     { name = "celery" },
     { name = "django" },
     { name = "django-compressor" },
+    { name = "django-environ" },
     { name = "django-ninja" },
     { name = "django-redis" },
     { name = "django-storages", extra = ["s3"] },
@@ -554,6 +564,7 @@ requires-dist = [
     { name = "celery", specifier = "==5.6.3" },
     { name = "django", specifier = "==6.0.5" },
     { name = "django-compressor", specifier = "==4.6.0" },
+    { name = "django-environ", specifier = ">=0.13.0" },
     { name = "django-ninja", specifier = ">=1.6.2" },
     { name = "django-redis", specifier = "==6.0.0" },
     { name = "django-storages", extras = ["s3"], specifier = "==1.14.6" },