fix(ha): fix deploy script bugs and correct cluster configuration

- Add root SSH key + passwordless sudo to ha-server nodes (needed for
  deploy script to run cluster-init.sh via SSH as root on node1)
- Fix cluster-init.sh: correct default IPs (228/227/229 per variables.nix),
  use \${VAR:-default} for all config so deploy.sh can override via env
- Fix acceptance-tests.sh: same IP corrections, add -i flag to SSH calls,
  use \${VAR:-default} pattern
- Fix deploy.sh dry-run bugs: pve_check() always runs SSH for read-only
  probes so bridge existence check is accurate; wait_for_ssh skips in
  dry-run instead of timing out
- Fix cluster-init invocation: upload script via scp and run via SSH as
  root on node1 (was incorrectly trying to run the script locally)
- Fix acceptance-tests invocation: pass IP env vars from deploy.sh

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HaH1cSGvhogRP5ExoF6nD8

scripts/ha/cluster-init.sh

@@ -21,22 +21,21 @@
 set -euo pipefail
 
 # ── Configuration ─────────────────────────────────────────────────────────
-# These must match variables.nix haServer* values and the Proxmox VMID
-# assignments.  Update before running.
-NODE1="ha-server-1"
-NODE2="ha-server-2"
-NODE1_IP="192.168.2.200"   # vars.haServer1Ip
-NODE2_IP="192.168.2.201"   # vars.haServer2Ip
-VIP="192.168.2.202"        # vars.haServerVip
-XFS_MOUNT="/srv/ha-data"   # vars.haStorageRoot
-ISCSI_IQN="iqn.2026-01.home.sweet:ha-storage"  # vars.haIscsiIqn
+# All values override-able via environment variables; defaults match variables.nix.
+NODE1="${NODE1:-ha-server-1}"
+NODE2="${NODE2:-ha-server-2}"
+NODE1_IP="${NODE1_IP:-192.168.2.228}"   # vars.haServer1Ip
+NODE2_IP="${NODE2_IP:-192.168.2.227}"   # vars.haServer2Ip
+VIP="${VIP:-192.168.2.229}"             # vars.haServerVip
+XFS_MOUNT="${XFS_MOUNT:-/srv/ha-data}"  # vars.haStorageRoot
+ISCSI_IQN="${ISCSI_IQN:-iqn.2026-01.home.sweet:ha-storage}"  # vars.haIscsiIqn
 ISCSI_LUN_FILE="${XFS_MOUNT}/iscsi-lun.img"
 ISCSI_LUN_SIZE="10G"
 DRBD_DEVICE="/dev/drbd0"
-VMID_NODE1=""              # FILL IN: Proxmox VMID for ha-server-1
-VMID_NODE2=""              # FILL IN: Proxmox VMID for ha-server-2
-PVE_HOST="pve1.sweet.home"
-PVE_USER="wayne"
+VMID_NODE1="${VMID_NODE1:-}"            # set by deploy.sh; needed for STONITH
+VMID_NODE2="${VMID_NODE2:-}"
+PVE_HOST="${PVE_HOST:-pve1.sweet.home}"
+PVE_USER="${PVE_USER:-wayne}"
 
 # NFS dataset subdirectories to create under XFS_MOUNT.
 # Must mirror vars.nfsShares subpath values in variables.nix.