docs(audit): fresh fleet audit + fix stale paths across 13 perf scripts

Fresh Proxmox fleet audit (2026-07-28) with current VM placements, RAM,
CPU, and storage for all 7 reachable hosts. Written to
docs/proxmox/AUDIT-2026-07-28.md — supersedes placement data in
PROJECT.md sections 4-8.

Key audit findings:
- CRITICAL: UCS01/02 and netinfra01/02 HA pairs both still on tsys4
  storage. tsys4 failure = DNS/DHCP/NTP + LDAP/AD fully dark. These
  migrations were the #1 recommendation from the previous audit and
  have not been done.
- CRITICAL: 2 of 3 active k3s cnodes (cnode1 + cnode2) on tsys4 NFS.
  tsys4 failure = etcd quorum lost.
- 59% of running VMs still on tsys4 storage (improved from 68%).
- cnode VMIDs have changed since PROJECT.md was written (cnode1 is now
  VMID 906 on tsys9, cnode2 is VMID 705 on tsys7, etc.)

Gardening fixes:
- Removed duplicate fleet-audit.sh (check.sh + deploy-check.sh already
  exist for this purpose)
- Fixed hardcoded path /home/reachableceo/projects/perfopt in 13 perf/
  scripts to use BASH_SOURCE-derived relative paths (per AGENTS.md
  self-locating scripts convention)
- Updated STATUS.md Known Issues with the two critical findings
- Updated STATUS.md Pending with prioritized pre-k8s action items
- Registered AUDIT-2026-07-28.md in docmap.md

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

perf/iperf-tsys6-tsys7.sh

@@ -2,7 +2,7 @@
 # iperf-tsys6-tsys7.sh - validate 2Gbps LACP between the two tuned hosts.
 set -uo pipefail
 SSH_OPTS=(-o BatchMode=yes -o ConnectTimeout=8 -o ServerAliveInterval=10 -o StrictHostKeyChecking=accept-new)
-LOG_DIR="/home/reachableceo/projects/perfopt/returned-logs/iperf"
+LOG_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/returned-logs/iperf"
 mkdir -p "$LOG_DIR"
 
 TSYS6="10.100.100.6"