fix: recognize Dutch evolution questions

backend/app/services/geo_assistant_service.py

@@ -27,7 +27,7 @@ from app.services.vector_feature_service import VectorFeatureService
 class GeoAssistantService:
     HISTORY_KEYWORDS = (
         "histor",
-        "evolutie",
+        "evolu",
         "verander",
         "trend",
         "vroeger",
@@ -38,6 +38,11 @@ class GeoAssistantService:
         "gestegen",
     )
 
+    @classmethod
+    def history_requested(cls, question: str) -> bool:
+        normalized = question.casefold()
+        return any(keyword in normalized for keyword in cls.HISTORY_KEYWORDS)
+
     def __init__(self, settings: Settings | None = None):
         self.settings = settings or get_settings()
 
@@ -272,7 +277,7 @@ class GeoAssistantService:
 
         temporal_series: list[AssistantTemporalSeries] = []
         temporal_context: list[dict[str, Any]] = []
-        include_history = any(keyword in payload.question.casefold() for keyword in self.HISTORY_KEYWORDS)
+        include_history = self.history_requested(payload.question)
         for key, observations in self._series(datasets):
             first = observations[0]
             last = observations[-1]

backend/tests/test_sprint202_temporal_metrics_and_ollama.py

@@ -86,6 +86,18 @@ def test_geo_assistant_rejects_model_that_is_not_installed(monkeypatch) -> None:
     assert exc_info.value.code == "OLLAMA_MODEL_UNAVAILABLE"
 
 
+@pytest.mark.parametrize(
+    "question",
+    [
+        "Hoe evolueerden bevolking en bosoppervlakte?",
+        "Toon de historische ontwikkeling van water.",
+        "Welke trend zien we sinds 2013?",
+    ],
+)
+def test_geo_assistant_recognizes_dutch_historical_questions(question: str) -> None:
+    assert GeoAssistantService.history_requested(question) is True
+
+
 def test_geo_assistant_sends_grounded_context_without_thinking_trace(monkeypatch) -> None:
     service = GeoAssistantService(ollama_settings())
     project_id = uuid4()