chore: initialize repo with full project state

Performance optimization engagement for a 7-host Proxmox R&D cluster.
Captures the accumulated work across host tuning, network analysis,
fleet assessment, and kubernetes architecture planning.

Contents:
- Host-side tunings (scripts/): CPU governor, swappiness, BBR, NFS
  nconnect, tuned profiles -- complete on 5 of 7 hosts
- Validation + benchmarking scripts: iperf matrix, bond/NFS fixes
- Collected host data (returned-logs/): check.sh output from all 7
  hosts + iperf results, including newly-validated pfv-tsys9
- AGENTS.md: operating context for AI agents
- PROJECT.md: board-ready fleet assessment with VM placement and
  storage redundancy analysis (40 VMs across 7 hosts)
- K8S.md: kubernetes architecture deep-dive covering cnode/wnode
  distribution, StorageClass design, and ETL/HPC workload planning

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

check-pkgs.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+# check-pkgs.sh - verify package install state.
+set -uo pipefail
+SSH_OPTS=(-o BatchMode=yes -o ConnectTimeout=8 -o StrictHostKeyChecking=accept-new)
+
+for host in pfv-tsys6 pfv-tsys7; do
+    echo "=== $host ==="
+    ssh "${SSH_OPTS[@]}" "root@$host" '
+        for p in sysstat jq numactl nvme mtr-tiny dig bmon tcpdump; do
+            if command -v "$p" >/dev/null 2>&1; then
+                echo "  ✓ $p"
+            else
+                echo "  ✗ $p"
+            fi
+        done
+        # sysstat config
+        echo "  sysstat service:"
+        systemctl list-unit-files 2>/dev/null | grep -i sysstat | sed "s/^/    /"
+        echo "  sysstat enabled in /etc/default:"
+        if [ -r /etc/default/sysstat ]; then
+            grep ENABLED /etc/default/sysstat | sed "s/^/    /"
+        else
+            echo "    no /etc/default/sysstat"
+        fi
+        # on Debian trixie, sysstat uses a different path
+        ls /etc/cron.d/sysstat* 2>/dev/null | sed "s/^/  found: /"
+    '
+    echo ""
+done