Docs-as-code: full deploy configs, compose stacks, and DR guide

- Add root README and docs/ (architecture, hosts, disaster-recovery, operations)
- Add compose/ for superset, forgejo, lam, cadvisor; unified deploy compose
- Add scripts/deploy (deploy-atc-docker01.sh, container inventory export)
- Add inventory/containers-atc-docker01.json snapshot
- Add config READMEs for kafka and airflow; .env.example; expand .gitignore
- Sync atclab helper scripts; update homepage/superset compose with env support

scripts/atclab/README.md

@@ -0,0 +1,12 @@
+# atclab scripts (referentie)
+
+Kopie van `/opt/atclab/bin/` op lab hosts — handige wrappers voor yum/git/syslog.
+
+| Script | Functie |
+|--------|---------|
+| `atclab-update` | yum update van atclab repo |
+| `gitcommit` | `git commit -m "$@"` shortcut |
+| `gittag` | git tagging helper |
+| `syslog` / `syslogf` | syslog viewers |
+
+Deze scripts zijn host-specifiek; pas aan per omgeving.