feat(geo): real-time attendance map on OpenStreetMap tiles

New GeoAttendance scene plus Attendance Map chip on Landing. Uses
react-leaflet 4 + leaflet 1.9 + OSM tiles (zero-key OSS) to render eight
seed sites (HQ + stores + offices + warehouse) with per-marker check-in
status (on-site / late / off-shift), kind filter (all/store/office/
warehouse), and a People Hub jump-off. Auto-fits to the visible markers.

OSS stack: react-leaflet@4, leaflet@1.9.4 (battle-tested by tens of
thousands of production deployments), default marker images served from
unpkg to avoid bundler asset hassle.

package.json

@@ -19,8 +19,10 @@
     "cmdk": "^1.1.1",
     "dagre": "^0.8.5",
     "framer-motion": "^12.40.0",
+    "leaflet": "^1.9.4",
     "react": "^19.2.6",
     "react-dom": "^19.2.6",
+    "react-leaflet": "^4.2.1",
     "reactflow": "^11.11.4",
     "zustand": "^5.0.14"
   },
@@ -28,6 +30,7 @@
     "@eslint/js": "^10.0.1",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
+    "@types/leaflet": "^1.9.21",
     "@types/node": "^24.12.3",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",