Move desktop and e2e into examples/ directory

- desktop/ → examples/django-react-desktop-app/
- e2e/ → examples/django-react-site/
- example/ → examples/django-react-site/backend/
- Update Dockerfile.test, Makefile, playwright config, and
  django.config.mjs path references

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

examples/django-react-site/backend/testapp/settings.py

@@ -0,0 +1,76 @@
+"""
+Django settings for the integration test backend.
+
+Provides:
+- HTTP server functions (echo, add)
+- WebSocket channels (chat, notifications, presence)
+- JWT authentication
+- Form integration (login, signup, add_email)
+"""
+
+import os
+
+SECRET_KEY = "integration-test-secret-key-not-for-production"
+
+DEBUG = True
+
+ALLOWED_HOSTS = ["*"]
+
+INSTALLED_APPS = [
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "mizan",
+    "testapp",
+]
+
+AUTH_USER_MODEL = "testapp.EmailUser"
+
+MIDDLEWARE = [
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+]
+
+ROOT_URLCONF = "testapp.urls"
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": os.path.join(os.path.dirname(__file__), "..", "db.sqlite3"),
+    }
+}
+
+DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+
+ASGI_APPLICATION = "testapp.asgi.application"
+
+# JWT
+JWT_PRIVATE_KEY = "integration-test-jwt-secret-key"
+JWT_ALGORITHM = "HS256"
+
+# Channel layers — Redis when available, in-memory fallback for local dev
+REDIS_URL = os.environ.get("REDIS_URL", "")
+if REDIS_URL:
+    CHANNEL_LAYERS = {
+        "default": {
+            "BACKEND": "channels_redis.core.RedisChannelLayer",
+            "CONFIG": {"hosts": [REDIS_URL]},
+        },
+    }
+else:
+    CHANNEL_LAYERS = {
+        "default": {
+            "BACKEND": "channels.layers.InMemoryChannelLayer",
+        },
+    }
+
+# Session
+SESSION_ENGINE = "django.contrib.sessions.backends.db"
+
+# CORS — allow React dev server
+CSRF_TRUSTED_ORIGINS = [
+    "http://localhost:3000",
+    "http://localhost:5173",
+    "http://localhost:5174",
+]