Adds a fully-provisioned Grafana dashboard for NOC operators to monitor
80 vehicles in real-time: live geomap with direction arrows, speed, driver
info, and color-coded plates. Includes datasource and dashboard provider
YAMLs, dashboard JSON (schemaVersion 39 / Grafana 11.0.0), and
docker-compose updates to mount provisioning at container start.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
