Add TODOs and information about sellting segments in imported vector file

Author: nathanfranklin

react/src/components/Map/PMTilesLayer.tsx

@@ -153,6 +153,9 @@ const PMTilesLayer: React.FC<PMTilesLayerProps> = ({
         .flat()
         .find((f) => f.feature);
       if (firstHit) {
+        // TODO(highlight): visually highlight the clicked geometry here (a
+        // filtered PaintRule + rerenderTile). Blocked on a stable per-geometry
+        // id (see SelectedVectorFeatureContext).
         onSelect(featureId, firstHit.feature.props as Record<string, unknown>);
       }
     };

react/src/context/SelectedVectorFeatureContext.tsx

@@ -40,14 +40,11 @@ export const SelectedVectorFeatureContext =
  * that segment's attributes in the detail panel.
  *
  * TODO(vectorSubId): make the sub-selection deep-linkable / reload-safe like
- * `selectedFeature`. A clicked geometry has no stable id today: PMTiles
- * geometries are split across tiles and simplified per zoom, and tippecanoe
- * doesn't emit a stable feature id unless the source carries one and we
- * preserve it. To do this properly, stamp a stable per-geometry id into the
- * tiles at ingest (geoapi/tippecanoe — pairs naturally with the per-feature
- * styling work in PMTilesLayer), surface it on the picked feature here, and
- * add a `vectorSubId` URL param alongside SELECTED_FEATURE_PARAM in
- * useFeatureSelection. Until then this stays transient (lost on reload/share).
+ * `selectedFeature`, and enable highlighting the clicked geometry. Both need a
+ * stable per-geometry id stamped at ingest (a clicked geometry has none today:
+ * PMTiles geometries are split across tiles and simplified per zoom, and
+ * tippecanoe doesn't emit a stable id unless the source carries one and we
+ * preserve it). Until then this stays transient (lost on reload/share).
  */
 export const SelectedVectorFeatureProvider = ({
   children,