register and sign in pages

backend/core/views.py

@@ -0,0 +1,17 @@
+from django.db import connection
+from rest_framework.decorators import api_view, authentication_classes, permission_classes
+from rest_framework.response import Response
+
+
+@api_view(["GET"])
+@authentication_classes([])
+@permission_classes([])
+def healthcheck(request):
+    """Liveness + database reachability, for compose/nginx health probes."""
+    try:
+        with connection.cursor() as cursor:
+            cursor.execute("SELECT 1")
+        database = "up"
+    except Exception:  # pragma: no cover - reported, not raised
+        database = "down"
+    return Response({"status": "ok", "database": database})