feat: add source-grounded evolution and Ollama assistant

frontend/src/components/map/MapWorkspace.tsx

@@ -5,6 +5,7 @@ import { featureCollectionBounds } from '../../lib/geojsonBounds'
 import { useMapThemeSelectionInsights } from '../../hooks/useMapThemeSelectionInsights'
 import { useTemporalComparison } from '../../hooks/useTemporalComparison'
 import { getDatasetDisplayName, getDatasetSourceDisplayName } from '../../lib/datasetDisplay'
+import { TemporalTrendChart } from './TemporalTrendChart'
 
 const DEFAULT_SELECTED_FEATURE_FILENAME = 'selected-feature.geojson'
 const DEFAULT_AREA_SELECTION_FILENAME = 'area-selection.geojson'
@@ -860,7 +861,7 @@ export function MapWorkspace({
     setSelectionBbox(bbox)
     const tasks: Array<Promise<unknown>> = [onRunMapSelectionExtract(bbox, areaId), loadAllThemeResults(bbox, areaId)]
     if (analysisMode === 'evolution' && earlierDatasetId && laterDatasetId) {
-      tasks.push(compareTemporalSnapshots(earlierDatasetId, laterDatasetId, bbox))
+      tasks.push(compareTemporalSnapshots(earlierDatasetId, laterDatasetId, bbox, areaId))
     }
     await Promise.all(tasks)
   }
@@ -869,7 +870,8 @@ export function MapWorkspace({
     if (!mapSelectionBbox || !earlierDatasetId || !laterDatasetId) {
       return
     }
-    void compareTemporalSnapshots(earlierDatasetId, laterDatasetId, mapSelectionBbox)
+    const areaId = selectedAreaBbox && bboxesEqual(mapSelectionBbox, selectedAreaBbox) ? selectedMapAreaId : undefined
+    void compareTemporalSnapshots(earlierDatasetId, laterDatasetId, mapSelectionBbox, areaId)
   }
 
   const handleMapBboxPreview = (bbox: VectorSelectionBBox) => {
@@ -1324,6 +1326,25 @@ export function MapWorkspace({
                           <strong>{temporalComparison.metric.is_estimate ? 'Ruimtelijke schatting' : 'Exact'}</strong>
                         </div>
                       </div>
+                      <TemporalTrendChart
+                        timeline={temporalComparison.timeline ?? []}
+                        metricKey={temporalComparison.metric.metric_key}
+                      />
+                      {(temporalComparison.metrics ?? []).filter((metric) => metric.metric_key !== temporalComparison.metric.metric_key).length > 0 ? (
+                        <div className="geo-supporting-metrics" aria-label="Aanvullende historische metingen">
+                          {(temporalComparison.metrics ?? [])
+                            .filter((metric) => metric.metric_key !== temporalComparison.metric.metric_key)
+                            .map((metric) => (
+                              <div key={metric.metric_key}>
+                                <span>{metric.label}</span>
+                                <strong>
+                                  {metric.absolute_change >= 0 ? '+' : ''}
+                                  {formatTemporalMetric(metric.absolute_change, metric.unit)}
+                                </strong>
+                              </div>
+                            ))}
+                        </div>
+                      ) : null}
                       {temporalComparison.object_changes.available ? (
                         <div className="geo-change-counts" aria-label="Objectwijzigingen">
                           <span><strong>{temporalComparison.object_changes.added_count ?? 0}</strong> nieuw</span>