feat: Consolidated UX improvements for map selection

- Snap selection to feature geometry when clicking labeled places
- Add wikidata enrichment for basemap labels (population, description)
- Differentiate visual feedback: reticle marker vs pulsing highlight
- Clear previous feature highlight when selection changes
- Store selection mode (reticle/feature) and feature info in state

Frontend: MapView click handler, PlaceDetail wikidata fetch, CSS
Backend: /api/place/wikidata/<id> route for Wikidata API lookups

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/api.js

@@ -194,6 +194,19 @@ export async function fetchPlaceDetails(osmType, osmId, signal) {
   }
 }
 
+export async function fetchPlaceByWikidata(wikidataId, signal) {
+  try {
+    const resp = await fetch(`/api/place/wikidata/${wikidataId}`, {
+      signal,
+      headers: { "Accept": "application/json" },
+    })
+    if (!resp.ok) return null
+    return resp.json()
+  } catch {
+    return null
+  }
+}
+
 // ── Contacts API ──
 
 export async function fetchContacts(signal) {

src/components/MapView.jsx

@@ -605,6 +605,7 @@ const MapView = forwardRef(function MapView(_, ref) {
   const activeLayersRef = useRef({ hillshade: false, traffic: false, contours: false, contoursTest: false, contoursTest10ft: false })
   // Flag to suppress map-click when a stop pin was clicked
   const pinClickedRef = useRef(false)
+  const highlightedFeatureRef = useRef(null) // { source, sourceLayer, id } for setFeatureState
 
   const stops = useStore((s) => s.stops)
   const route = useStore((s) => s.route)
@@ -870,24 +871,54 @@ const MapView = forwardRef(function MapView(_, ref) {
         // Find first feature with a name (respects layer order = priority)
         const labelFeature = features.find(f => f.properties?.name)
 
-        // Set click marker
-        store.setClickMarker({
-          lat,
-          lon: lng,
-          circleRadiusPx: MARKER_RADIUS_PX,
-        })
+        // Clear previous feature highlight
+          if (highlightedFeatureRef.current) {
+            const { source, sourceLayer, id } = highlightedFeatureRef.current
+            try {
+              map.setFeatureState({ source, sourceLayer, id }, { selected: false })
+            } catch (e) { /* ignore if layer removed */ }
+            highlightedFeatureRef.current = null
+          }
 
-        if (labelFeature) {
-          // Clicked a labeled feature — use its properties
+          if (labelFeature) {
+          // Clicked a labeled feature — snap to geometry and highlight
           const props = labelFeature.properties
+          const geom = labelFeature.geometry
+
+          // Get feature coordinates (Point geometry)
+          let featureLat = lat
+          let featureLon = lng
+          if (geom && geom.type === 'Point' && geom.coordinates) {
+            featureLon = geom.coordinates[0]
+            featureLat = geom.coordinates[1]
+          }
+
+          // Apply feature state highlight
+          const featureId = labelFeature.id ?? props.mvt_id
+          const sourceLayer = labelFeature.sourceLayer
+          const source = labelFeature.source
+          if (featureId != null && source) {
+            try {
+              map.setFeatureState({ source, sourceLayer, id: featureId }, { selected: true })
+              highlightedFeatureRef.current = { source, sourceLayer, id: featureId }
+            } catch (e) { console.warn('setFeatureState error:', e) }
+          }
+
+          // For feature clicks, don't show pin marker
+          store.clearClickMarker()
+
           store.setSelectedPlace({
-            lat,
-            lon: lng,
+            lat: featureLat,
+            lon: featureLon,
             name: props.name || 'Unknown',
             address: null,
             type: props.kind_detail || props.kind || null,
             source: 'basemap_label',
             matchCode: null,
+            mode: 'feature',
+            featureId: featureId,
+            featureLayer: labelFeature.layer?.id || null,
+            wikidata: props.wikidata || null,
             raw: {
               wikidata: props.wikidata || null,
               population: props.population || null,
@@ -897,7 +928,13 @@ const MapView = forwardRef(function MapView(_, ref) {
             },
           })
         } else {
-          // No labeled feature — fall back to reverse geocode
+          // No labeled feature — show reticle at click point
+          store.setClickMarker({
+            lat,
+            lon: lng,
+            circleRadiusPx: MARKER_RADIUS_PX,
+          })
+
           store.setSelectedPlace({
             lat,
             lon: lng,
@@ -906,6 +943,7 @@ const MapView = forwardRef(function MapView(_, ref) {
             type: null,
             source: 'map_click',
             matchCode: null,
+            mode: 'reticle',
             raw: {},
           })
 
@@ -1089,17 +1127,26 @@ const MapView = forwardRef(function MapView(_, ref) {
     if (!selectedPlace) return
 
     // Only fly to place if it came from search (not map-click which already centered)
-    if (selectedPlace.source !== 'map_click') {
+    if (selectedPlace.source !== 'map_click' && selectedPlace.source !== 'basemap_label') {
       map.flyTo({ center: [selectedPlace.lon, selectedPlace.lat], zoom: 14, duration: 800 })
     }
 
-    // Create preview marker
+    // Different visual feedback based on mode
+    const isFeatureMode = selectedPlace.mode === 'feature'
+
+    // Create marker element
     const el = document.createElement('div')
-    el.className = 'navi-pin-preview'
-    // Add precise center dot
-    const dot = document.createElement('div')
-    dot.className = 'navi-pin-center-dot'
-    el.appendChild(dot)
+    if (isFeatureMode) {
+      // Feature mode: subtle ring indicator
+      el.className = 'navi-feature-highlight'
+    } else {
+      // Reticle mode: pin with center dot
+      el.className = 'navi-pin-preview'
+      const dot = document.createElement('div')
+      dot.className = 'navi-pin-center-dot'
+      el.appendChild(dot)
+    }
+
     previewMarkerRef.current = new maplibregl.Marker({ element: el })
       .setLngLat([selectedPlace.lon, selectedPlace.lat])
       .addTo(map)

src/components/PlaceDetail.jsx

@@ -6,7 +6,7 @@ import {
 import OpeningHours from 'opening_hours'
 import toast from 'react-hot-toast'
 import { useStore } from '../store'
-import { fetchElevation, fetchPlaceDetails, fetchDriveTime, fetchNearbyContacts, fetchLandclass } from '../api'
+import { fetchElevation, fetchPlaceDetails, fetchPlaceByWikidata, fetchDriveTime, fetchNearbyContacts, fetchLandclass } from '../api'
 import { hasFeature } from '../config'
 import { buildAddress } from '../utils/place'
 
@@ -480,6 +480,35 @@ export default function PlaceDetail() {
     return () => controller.abort()
   }, [osmType, osmId])
 
+  // Fetch wikidata enrichment when place has wikidata but no OSM details
+  const wikidataId = selectedPlace?.wikidata || selectedPlace?.raw?.wikidata
+  useEffect(() => {
+    // Skip if OSM details are available (they provide richer data)
+    if (osmType && osmId) return
+    // Skip if no wikidata ID
+    if (!wikidataId) return
+
+    const controller = new AbortController()
+
+    fetchPlaceByWikidata(wikidataId, controller.signal).then((data) => {
+      if (!controller.signal.aborted && data) {
+        // Merge wikidata info into placeDetails (description, population, etc.)
+        setPlaceDetails((prev) => ({
+          ...(prev === 'loading' ? {} : prev || {}),
+          description: data.description,
+          population: data.population,
+          osm_relation_id: data.osm_relation_id,
+          extratags: {
+            ...(prev && prev !== 'loading' ? prev.extratags : {}),
+            ...data.extratags,
+          },
+        }))
+      }
+    })
+
+    return () => controller.abort()
+  }, [wikidataId, osmType, osmId])
+
   // Fetch drive time when place or user location changes
   useEffect(() => {
     if (!userLocation || placeLat == null || placeLon == null) {

src/index.css

@@ -279,6 +279,20 @@ body {
   background: var(--accent);
   pointer-events: none;
 }
+.navi-feature-highlight {
+  position: relative;
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  border: 2px solid var(--accent);
+  background: var(--accent-muted);
+  animation: navi-pulse 1.5s ease-in-out infinite;
+  pointer-events: none;
+}
+@keyframes navi-pulse {
+  0%, 100% { transform: scale(1); opacity: 0.8; }
+  50% { transform: scale(1.2); opacity: 0.5; }
+}
 
 /* ═══ PLACE DETAIL PANEL ═══ */
 .navi-place-detail {

src/store.js

@@ -59,7 +59,7 @@ export const useStore = create((set, get) => ({
   clearRoute: () => set({ route: null, routeError: null }),
 
   // ── Place detail ──
-  selectedPlace: null, // { lat, lon, name, address, type, source, matchCode, raw }
+  selectedPlace: null, // { lat, lon, name, address, type, source, matchCode, raw, mode?, featureId?, featureLayer?, wikidata? }
   clickMarker: null, // { lat, lon, circleRadiusPx } — visual marker for two-click selection
   gpsOrigin: true, // whether GPS should be used as origin when available
   pendingDestination: null, // place waiting for a starting point (GPS-denied Directions flow)