refactor(docs): co-locate k8s/proxmox docs with their code + fix broken perf paths

Docs moved from docs/k8s -> k8s/docs and docs/proxmox -> proxmox/docs to sit
beside their code. Updated all cross-references (docmap, STATUS, README, AGENTS,
k8s README). Fixed SCRIPT_DIR path resolution in 3 perf scripts broken by the
reorg (deploy-check/and-fix/finish-host pointed at root/scripts instead of
perf/scripts). Registered the new top-level proxmox/ dir in all listings.

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Assisted-by: Crush:glm-5.2

README.md

@@ -11,13 +11,14 @@ Unified infrastructure repo for the Known Element Enterprises Proxmox R&D cluste
 | [`provisioning/`](provisioning/) | Server provisioning (SetupNewSystem.sh, security hardening, 2FA, NTP/DNS config, SNMP, Dell OMSA) |
 | [`tests/`](tests/) | Test suite + VM validation harness |
 | [`dns-cluster-setup/`](dns-cluster-setup/) | Technitium DNS cluster replication scripts |
-| [`k8s/`](k8s/) | k3s cluster setup scripts (3-node HA control plane over Tailscale) |
+| [`k8s/`](k8s/) | k3s cluster setup scripts (3-node HA control plane over Tailscale) + co-located docs |
 | [`powerman/`](powerman/) | Cyclades PM10i PDU management via powerman on pfv-tsys1 |
 | [`console/`](console/) | Serial console management (ser2net + conman) for network switches on pfv-tsys4 |
 | [`perf/`](perf/) | Proxmox performance tuning, fleet audit, iperf, switch diagnostics |
+| [`proxmox/`](proxmox/) | Proxmox fleet docs: hardware audit, capacity analysis, k8s host planning |
 | [`netinfra/`](netinfra/) | pfv-netinfra-01/02 DNS/NTP setup + audit scripts |
 | [`switches/`](switches/) | Switch configuration captures |
-| [`docs/`](docs/) | All documentation ([see docmap](docs/docmap.md)) |
+| [`docs/`](docs/) | Server-build docs, documentation index ([docmap](docs/docmap.md)), and archive |
 | [`vendor/`](vendor/) | Vendored KNELShellFramework |
 
 ## Quick Start