chore(archive): preserve KNELServerBuild remainder + layout notes [#474]

Archive the non-ported remainder of the legacy KNELServerBuild repo
under archive/KNELServerBuild/ with its original structure intact,
completing the legacy repo merge for everything except the live
LibreNMS patterns (ported in the previous commit).

Exclusions:
- .git history (superseded; legacy repo remains at its original path)
- ported files (Agents/librenms, Modules/OAM/oam-librenms.sh,
  ConfigFiles/SNMP/snmp-sudo.conf)
- vendored KNELShellFramework tree (byte-identical duplicate of the
  copy already vendored at vendor/ in this repo)
- SSH authorized-keys files (live access-control material; carrying
  them in an archive invites drift — key policy lives elsewhere)

The whole tree is skip-listed in tests/shellcheck.sh (archived legacy
code, not maintained — same standing as vendor/); check-rules.sh
already prunes archive/. Rule 9 (conflict markers) now also excludes
archive/ staged files: preserved-verbatim legacy scripts contain
decorative "====" banners that false-positive as conflict markers
(same archive exclusion precedent as rule 11).

AGENTS.md: note archive/KNELServerBuild and oam/librenms-agent in the
Repository Layout, and fix the stale KNELIAC path to
/home/reachableceo/projects/KNEL/KNELIAC.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

AGENTS.md

@@ -319,19 +319,23 @@ dcinfra/            Data-center infra: PDU (powerman), serial console (console),
 netinfra/           DNS/NTP/DHCP setup + audit; DNS cluster replication (dns-cluster-setup);
                     switch captures (switches); DHCP config (dhcp)
 k8s/                k3s cluster setup scripts (HA control plane over Tailscale) + docs/
+oam/                OAM platform tooling (oxidized, unpoller, smokeping, netdisco, weathermap;
+                    librenms-agent: check_mk agent + snmp-extend scripts ported from KNELServerBuild [#474])
 proxmox/            Proxmox fleet docs (hardware audit, capacity, storage) + perf tuning (perf/)
 awx/                Ansible AWX deployment (k3s + AWX Operator)
 tests/              Test suite + VM validation harness + remote.sh SSH chokepoint
 scripts/            Framework: git hooks, rule engine (check-rules.sh), shared lib
 docs/               Server-build docs, docmap index, and archive
-archive/            Historical/superseded code (provisioning -> replaced by KNELIAC project)
+archive/            Historical/superseded code (provisioning -> replaced by KNELIAC project;
+                    KNELServerBuild -> live patterns ported to oam/librenms-agent/, remainder
+                    preserved under archive/KNELServerBuild/ [#474])
 vendor/             Vendored KNELShellFramework
 ```
 
 - **Server provisioning moved to KNELIAC**: The
   [`archive/provisioning/`](archive/provisioning/) tree is historical. Active
   server provisioning lives in the **KNELIAC** project at
-  `/home/reachableceo/projects/KNELIAC`.
+  `/home/reachableceo/projects/KNEL/KNELIAC`.
 - **Non-bash files**: Some files under `archive/provisioning/Agents/` have `.sh`
   extension but are PHP (shebang `#!/usr/bin/php`). Skip in syntax checks.
 - **Remote access (NON-NEGOTIABLE):** ALL SSH/SCP to ANY host MUST go