Add map empty-state dataset actions

frontend/src/components/map/MapWorkspace.tsx

@@ -1,5 +1,5 @@
 import GeoMap from '../GeoMap'
-import type { AreaRead } from '../../types'
+import type { AreaRead, DatasetCreateResponse } from '../../types'
 
 interface MapWorkspaceProps {
   areas: AreaRead[]
@@ -16,7 +16,9 @@ interface MapWorkspaceProps {
   mapFeatureCount: number
   areaFeatureCount: number
   selectedMapFeature: GeoJSON.Feature | null
+  availableMapDatasets: DatasetCreateResponse[]
   onSelectMapArea: (areaId: string) => void
+  onOpenDatasetInMap: (dataset: DatasetCreateResponse) => void
   onSetAreaLayerVisible: (visible: boolean) => void
   onSetAreaLayerOpacity: (opacity: number) => void
   onSetMapLayerVisible: (visible: boolean) => void
@@ -39,7 +41,9 @@ export function MapWorkspace({
   mapFeatureCount,
   areaFeatureCount,
   selectedMapFeature,
+  availableMapDatasets,
   onSelectMapArea,
+  onOpenDatasetInMap,
   onSetAreaLayerVisible,
   onSetAreaLayerOpacity,
   onSetMapLayerVisible,
@@ -150,6 +154,21 @@ export function MapWorkspace({
         <div className="empty-state map-empty-state">
           <strong>No active vector or result layer</strong>
           <p>Open a dataset, detection run, segmentation run or change result to draw it here.</p>
+          {availableMapDatasets.length > 0 ? (
+            <>
+              <p className="eyebrow">Open a ready vector dataset</p>
+              <div className="map-empty-action-grid">
+                {availableMapDatasets.map((dataset) => (
+                  <button className="secondary-action" key={dataset.id} type="button" onClick={() => onOpenDatasetInMap(dataset)}>
+                    <span>{dataset.name}</span>
+                    <strong>Open in map</strong>
+                  </button>
+                ))}
+              </div>
+            </>
+          ) : (
+            <p className="muted">No ready vector datasets available yet. Upload or seed a vector dataset first.</p>
+          )}
         </div>
       ) : null}
       <GeoMap