feat: add operations health and domain setup polish

backend/app/tests/test_api.py

@@ -18,6 +18,42 @@ def test_domains_empty(client: TestClient):
     assert data == []
 
 
+def test_create_domain_without_reports(authed_client: TestClient):
+    """A monitored domain can be created before its first report arrives."""
+    response = authed_client.post(
+        "/api/v1/domains/domains",
+        json={"name": "Example.COM.", "description": "Primary mail domain"},
+    )
+    assert response.status_code == 201
+    assert response.json()["name"] == "example.com"
+
+    list_response = authed_client.get("/api/v1/domains/domains")
+    assert list_response.status_code == 200
+    assert list_response.json()[0]["name"] == "example.com"
+    assert list_response.json()[0]["reports_count"] == 0
+
+
+def test_create_domain_rejects_duplicates(authed_client: TestClient):
+    """Creating the same monitored domain twice returns a conflict."""
+    first = authed_client.post("/api/v1/domains/domains", json={"name": "example.com"})
+    second = authed_client.post("/api/v1/domains/domains", json={"name": "EXAMPLE.com"})
+
+    assert first.status_code == 201
+    assert second.status_code == 409
+
+
+def test_operations_health_endpoint(authed_client: TestClient):
+    """Detailed health includes database, scheduler, import, and report sections."""
+    response = authed_client.get("/api/v1/health/operations")
+    assert response.status_code == 200
+    data = response.json()
+    assert data["service"] == "dmarq"
+    assert data["database"]["ok"] is True
+    assert "scheduler" in data
+    assert "imports" in data
+    assert "reports" in data
+
+
 def test_reports_upload_invalid_extension(client: TestClient):
     """Test that uploading a file with an unsupported extension returns 400."""
     response = client.post(