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.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

perf/deploy-and-fix.sh

@@ -3,7 +3,7 @@
 set -uo pipefail
 HOST="$1"
 SSH_OPTS=(-o BatchMode=yes -o ConnectTimeout=8 -o ServerAliveInterval=10 -o StrictHostKeyChecking=accept-new)
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/scripts"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/scripts"
 
 echo "=== Uploading fix script to $HOST ==="
 scp "${SSH_OPTS[@]}" "$SCRIPT_DIR/fix-bond-nfs.sh" "root@$HOST:/root/fix-bond-nfs.sh" >/dev/null 2>&1