wired PySwiss microservice deployment: env-driven settings, gunicorn pinned, PYSWISS_URL in main settings, test-pyswiss CI stage

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pyswiss/core/settings.py

@@ -3,9 +3,9 @@ from pathlib import Path
 
 BASE_DIR = Path(__file__).resolve().parent.parent
 
-SECRET_KEY = 'pyswiss-dev-only-key-replace-in-production'
-DEBUG = True
-ALLOWED_HOSTS = ['*']
+SECRET_KEY = os.environ.get('SECRET_KEY', 'pyswiss-dev-only-key-replace-in-production')
+DEBUG = os.environ.get('DEBUG', 'true').lower() != 'false'
+ALLOWED_HOSTS = os.environ.get('ALLOWED_HOSTS', '*').split(',')
 
 INSTALLED_APPS = [
     'django.contrib.contenttypes',