Extend TypeScript client and add Leaflet asset demo.

This adds typed asset APIs to the geo client, covers the 3D/image upload-share flow in integration tests, and introduces a simple Leaflet web demo that places objects on map features and manages sharing visibility via backend links.

Made-with: Cursor

docs/docker-minio-local-dev.md

@@ -43,3 +43,30 @@ docker compose up --build -d
    - create asset and get signed upload URL
    - upload file with PUT
    - request `/v1/assets/{id}/download`
+
+## Quick verification script
+
+Use this as a smoke-check after startup:
+
+```bash
+# 1) check API and MinIO UI reachability
+curl -fsS http://localhost:8122/healthz
+curl -I http://localhost:8774
+
+# 2) ensure MinIO S3 API is not exposed on host
+if curl -fsS http://localhost:9000/minio/health/live >/dev/null 2>&1; then
+  echo "Unexpected: MinIO S3 API is exposed on host"
+else
+  echo "OK: MinIO S3 API is internal-only"
+fi
+```
+
+## Troubleshooting
+
+- If `api` fails with storage config errors, verify `S3_*` variables in compose environment.
+- If bucket bootstrap fails, inspect:
+  - `docker compose logs minio`
+  - `docker compose logs minio-init`
+- If signed URLs are generated but upload fails, check:
+  - object key path style (`S3_USE_PATH_STYLE=true` for MinIO)
+  - MinIO credentials (`S3_ACCESS_KEY`, `S3_SECRET_KEY`)