feat: add stage 0 foundation

backend/apps/system/__init__.py

@@ -0,0 +1 @@
+

backend/apps/system/api.py

@@ -0,0 +1,8 @@
+from ninja import Router
+
+router = Router(tags=["system"])
+
+
+@router.get("/health")
+def health(request):
+    return {"status": "ok"}

backend/apps/system/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class SystemConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "apps.system"

backend/apps/system/tests/__init__.py

@@ -0,0 +1 @@
+

backend/apps/system/tests/test_health_api.py

@@ -0,0 +1,5 @@
+def test_health_endpoint_returns_ok(client):
+    response = client.get("/api/system/health")
+
+    assert response.status_code == 200
+    assert response.json() == {"status": "ok"}