[bojemoi] feat(grafana): dashboards bind mount + scan-results dashboard + config swap fix

Commit `24c1a17`

stack/01-service-hl.yml:
- Grafana: bind mount /opt/bojemoi/volumes/grafana/dashboards → /var/lib/grafana/dashboards
- Grafana: rename Docker configs (grafana-datasources_v2, grafana-dashboards-provider_v2) to fix immutability error + correct the datasource/dashboard config swap
- Loki: publish port 3100 on host (mode: host) for redirector log drain via VPN
volumes/grafana/provisioning/dashboards/dashboards.yml:
- Cleaned (removed embedded K8s ConfigMap garbage)
- 3 providers: Pentest, Security, Attack Heatmap
volumes/grafana/provisioning/datasources/datasources.yml:
- Added PostgreSQL-MSF datasource (postgres:5432/msf) for scan log queries
volumes/grafana/dashboards/pentest/scan-results.json (NEW):
- Dashboard with 3 sections: Nuclei / ZAP / UZI
- Stats: total scans, findings/alerts, critical/high, faraday_ok
- Tables: top vulns per tool
- Pie charts: status breakdown

Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com