UX: implement visual product roadmap

backend/tests/test_vehicles.py

@@ -14,6 +14,18 @@ def test_attention_only_filters_flagged_vehicles(ops_client):
     assert all(v["attention"] for v in vehicles)
 
 
+def test_vehicle_page_preserves_filters_and_limits_rendered_records(ops_client):
+    response = ops_client.get(
+        "/api/v1/vehicles",
+        params={"status": "maintenance", "page": 1, "page_size": 25},
+    )
+    assert response.status_code == 200
+    body = response.json()
+    assert len(body["items"]) <= 25
+    assert all(v["operational_status"] == "maintenance" for v in body["items"])
+    assert body["total"] >= len(body["items"])
+
+
 def test_vehicle_detail_includes_related_records(ops_client):
     response = ops_client.get("/api/v1/vehicles/MO-016")
     assert response.status_code == 200