feat(desktop): Various UI enhancements related to Import

desktop/docs/screens/import.md

@@ -29,3 +29,11 @@ Bring external JSON observation files into the active profile’s local reposito
 
 - Store: `import` flow via `tauriClient.importObservations`, refresh `loadObservations` / `loadHealth` after import
 - Active profile determines target SQLite repository
+
+## Observation indexes
+
+When the active app bundle declares `observationIndexes` in `app.config.json`:
+
+1. Import writes observations in batches (default 2000 rows per IPC call); intermediate batches skip index work.
+2. After the final batch commits, Rust schedules **one** coalesced background full index rebuild (`bundle/index-rebuild` progress events). Overlapping rebuild requests while one is running are merged into a single follow-up pass.
+3. Sync pull uses incremental indexing per page instead (no full rebuild after each pull).

desktop/package.json

@@ -28,9 +28,13 @@
     "@tauri-apps/plugin-opener": "~2.5.0",
     "ajv": "^8.18.0",
     "ajv-formats": "^3.0.1",
+    "leaflet": "^1.9.4",
+    "leaflet.markercluster": "^1.5.3",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-leaflet": "^4.2.1",
     "react-router-dom": "^7.8.2",
+    "recharts": "^3.9.2",
     "zustand": "^5.0.8"
   },
   "devDependencies": {
@@ -40,6 +44,8 @@
     "@testing-library/jest-dom": "^6.8.0",
     "@testing-library/react": "^16.3.0",
     "@testing-library/user-event": "^14.6.1",
+    "@types/leaflet": "^1.9.21",
+    "@types/leaflet.markercluster": "^1.5.6",
     "@types/react": "^18.3.1",
     "@types/react-dom": "^18.3.1",
     "@vitejs/plugin-react": "^4.3.4",