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/trino/catalog/iceberg.properties

@@ -0,0 +1,10 @@
+connector.name=iceberg
+iceberg.catalog.type=TESTING_FILE_METASTORE
+hive.metastore.catalog.dir=/tmp/iceberg_metadata
+
+# S3 Connectivity
+hive.s3.endpoint=http://10.0.20.111:9020
+hive.s3.aws-access-key=REDACTED
+hive.s3.aws-secret-key=REDACTED
+hive.s3.path-style-access=true
+hive.s3.ssl.enabled=false