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

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+# 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.

scripts/atclab/atclab-update

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+#!/usr/bin/bash
+#yum makecache
+
+yum --disablerepo="*" --enablerepo="atclab" clean all && yum --disablerepo="*" --enablerepo="atclab" -y update

scripts/atclab/gitcommit

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+#!/usr/bin/bash
+
+desc="$@"
+
+git commit -m "$desc"

scripts/atclab/gittag

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+#!/usr/bin/bash
+
+DIR=$(git rev-parse --show-toplevel) || exit 10
+NAME=$(rpm -q --qf '%{name}\n' --specfile ${DIR}/*.spec)
+VERSION=$(rpm -q --qf '%{version}\n' --specfile ${DIR}/*.spec)
+
+
+while getopts ":h:" OPT; do
+  case "$OPT" in
+ \?|h) usage ; exit 0 ;;
+  esac
+done
+shift $((OPTIND-1))
+
+case $1 in
+  apply) git tag -a -mversion v${VERSION} ;;
+  *) echo git tag -a -mversion v${VERSION} ;;
+esac

scripts/atclab/r

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+#!/usr/bin/bash
+
+DEL=""
+
+deletehost() {
+  local host ip
+  host=$(echo $1 | awk -F@ '{print $NF}')
+  ip=$(host $host | awk '/has address/ {print $NF}' | head -1)
+  ssh-keygen -R $host
+  test -n "$ip" && ssh-keygen -R $ip
+}
+
+while getopts ":dh" OPT; do
+  case "$OPT" in
+    d) DEL=Y ;;
+ \?|h) usage >&2 ; exit 0 ;;
+  esac
+done
+shift $(expr $OPTIND - 1)
+
+test -n "$DEL" && deletehost $@
+
+ssh root@${1:-none}

scripts/atclab/syslog

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+#!/usr/bin/bash
+
+test -f /var/log/messages && tail -n100 /var/log/messages
+test -f /var/log/syslog && tail -n100 /var/log/syslog

scripts/atclab/syslogf

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+#!/usr/bin/bash
+
+test -f /var/log/messages && tail -n100 -f /var/log/messages
+test -f /var/log/syslog && tail -n100 -f /var/log/syslog