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

STATUS.md

@@ -45,7 +45,7 @@ infrastructure, Proxmox cluster ops, and k8s control plane.
 - [x] Kubeconfig saved to `~/.kube/config.pfv-k8s` (gitignored, embedded certs)
 - [ ] Workers (wnodes) not yet joined to this cluster
 - [ ] Distro decision: **k3s chosen for regular R&D cluster**. Talos docs
-  preserved in `docs/k8s/` for future ITAR/classified cluster.
+  preserved in `k8s/docs/` for future ITAR/classified cluster.
 
 ### PDU Management (powerman on pfv-tsys1 — LIVE)
 - [x] Cyclades AlterPath PM10i (10 outlets) managed via powerman over serial
@@ -90,13 +90,13 @@ infrastructure, Proxmox cluster ops, and k8s control plane.
    - wnode-tsys7 (701): D5 → S1 (tsys4 → tsys5)
    - Gives every wnode its own physical disk, balances 3/3 across servers
 2. **Friday maintenance:** physical hardware + VM migrations (see
-   [`docs/proxmox/AUDIT-2026-07-28.md`](docs/proxmox/AUDIT-2026-07-28.md) §5)
+   [`proxmox/docs/AUDIT-2026-07-28.md`](proxmox/docs/AUDIT-2026-07-28.md) §5)
 3. **k8s workers:** Join wnodes to the k3s cluster (after rebalancing)
 4. **PDU:** Rename outlets in powerman.conf to match physical devices (Friday)
 5. **k8s deferred topics:** ETL tooling, HPC scheduler, vcluster policy,
    solar-aware scale-out
 
-> **See [`docs/proxmox/AUDIT-2026-07-28.md`](docs/proxmox/AUDIT-2026-07-28.md)
+> **See [`proxmox/docs/AUDIT-2026-07-28.md`](proxmox/docs/AUDIT-2026-07-28.md)
 > for the full fresh audit with VM inventory, capacity analysis, and
 > Friday migration plan.**