Full lab documentation and infrastructure as code

- Trino catalogs, Grafana, Spark jobs, LDAP LDIF, NPM compose
- Airflow DAG scripts, Proxmox VM inventory, network docs
- Ansible playbook, Gitea CI validate workflow
- Backup and health-check scripts, cron documentation
- Homepage DOCS tab with links to all documentation
- Extended collect-fleet-config.sh and populate-repo.py

config/grafana/grafana.ini

@@ -0,0 +1,16 @@
+[server]
+http_addr = 0.0.0.0
+http_port = 3000
+
+[security]
+admin_user = admin
+admin_password = REDACTED
+allow_embedding = true
+
+[auth.anonymous]
+enabled = true
+org_name = Main Org.
+org_role = Viewer
+
+[auth.basic]
+enabled = false