Add no-cache response header to dashboard for immediate visibility after deploys; enhance Proxmox monitoring documentation and update flash script to allow Backup without a golden image.

chromium-setup/emmc-provisioning/scripts/check-usb-on-host.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Run on the Proxmox HOST (where USB is connected) to verify the reTerminal in boot mode is seen.
+# Usage: ssh root@10.130.60.224 'bash -s' < scripts/check-usb-on-host.sh
+# Or copy to host and run: ./check-usb-on-host.sh
+
+echo "=== CM4 boot-mode USB (2b8e = RPi, 0a5c:2711 = Broadcom BCM2711) ==="
+lsusb | grep -E "2b8e|0a5c" || echo "None found. Connect reTerminal in boot mode (eMMC disable jumper) and use the USB slave port."
+echo ""
+echo "=== All USB devices ==="
+lsusb
+echo ""
+echo "=== Provisioning status ==="
+cat /var/lib/cm4-provisioning/status.json 2>/dev/null || echo "No status.json (script has not run yet)."
+echo ""
+echo "=== Last flash log ==="
+tail -15 /var/lib/cm4-provisioning/flash.log 2>/dev/null || echo "No flash.log"
+echo ""
+echo "=== udev rule and rpiboot ==="
+test -f /etc/udev/rules.d/90-cm4-boot-mode.rules && echo "90-cm4-boot-mode.rules: present" || echo "90-cm4-boot-mode.rules: MISSING"
+test -x /opt/usbboot/rpiboot && echo "rpiboot: present" || echo "rpiboot: MISSING"
+test -f /etc/cm4-provisioning/enabled && echo "enabled: yes" || echo "enabled: no (provisioning disabled)"

chromium-setup/emmc-provisioning/scripts/deploy-dashboard-to-lxc.sh

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+#!/usr/bin/env bash
+# Deploy only the dashboard to the LXC by IP (no Proxmox host needed).
+# Usage: ./deploy-dashboard-to-lxc.sh [user@lxc_ip]
+# Example: ./deploy-dashboard-to-lxc.sh root@10.130.60.119
+
+set -e
+LXC="${1:-root@10.130.60.119}"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_DIR="$(dirname "$SCRIPT_DIR")"
+DASHBOARD_DIR="$REPO_DIR/dashboard"
+REMOTE_DIR="/opt/cm4-provisioning/dashboard"
+
+if [[ ! -d "$DASHBOARD_DIR" ]]; then
+  echo "Error: dashboard dir not found: $DASHBOARD_DIR"
+  exit 1
+fi
+
+echo "Deploying dashboard to $LXC ($REMOTE_DIR) ..."
+ssh "$LXC" "mkdir -p $REMOTE_DIR/templates"
+
+rsync -avz \
+  "$DASHBOARD_DIR/app.py" \
+  "$DASHBOARD_DIR/cm4-dashboard.service" \
+  "$LXC:$REMOTE_DIR/"
+
+rsync -avz \
+  "$DASHBOARD_DIR/templates/" \
+  "$LXC:$REMOTE_DIR/templates/"
+
+echo "Restarting cm4-dashboard service ..."
+ssh "$LXC" "systemctl restart cm4-dashboard && systemctl is-active --quiet cm4-dashboard && echo 'Dashboard restarted and running.'"
+
+echo "Done. Dashboard at http://$(echo "$LXC" | cut -d@ -f2):5000"

chromium-setup/emmc-provisioning/scripts/monitor-from-host.sh

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+#!/usr/bin/env bash
+# Run on the Proxmox HOST to see provisioning status, USB, flash job, and logs.
+# Usage: ./monitor-from-host.sh   or: ssh root@10.130.60.224 'bash -s' < scripts/monitor-from-host.sh
+
+PROV=/var/lib/cm4-provisioning
+
+echo "═══════════════════════════════════════════════════════════════"
+echo "  CM4 provisioning – host monitor"
+echo "═══════════════════════════════════════════════════════════════"
+echo ""
+
+echo "--- USB (CM4 boot mode: 2b8e or 0a5c:2711) ---"
+lsusb | grep -E "2b8e|0a5c" || echo "  No CM4 boot device seen."
+echo ""
+
+echo "--- Current status (dashboard reads this) ---"
+if [[ -f "$PROV/status.json" ]]; then
+  cat "$PROV/status.json" | python3 -m json.tool 2>/dev/null || cat "$PROV/status.json"
+else
+  echo "  No status.json (no run yet)."
+fi
+echo ""
+
+echo "--- Flash job (systemd unit) ---"
+systemctl show cm4-flash-once --property=ActiveState,SubState,ExecMainPID 2>/dev/null || echo "  Unit not run yet."
+echo ""
+
+echo "--- Last 20 lines of flash.log ---"
+tail -20 "$PROV/flash.log" 2>/dev/null || echo "  No flash.log"
+echo ""
+
+echo "--- Provisioning dir ---"
+ls -la "$PROV/" 2>/dev/null || echo "  Dir missing."
+echo ""
+
+echo "--- Block devices (eMMC appears here after rpiboot) ---"
+lsblk -d -o NAME,SIZE,MODEL,TRAN 2>/dev/null | head -15
+echo ""
+
+echo "--- Config ---"
+echo "  enabled:  $([ -f /etc/cm4-provisioning/enabled ] && echo yes || echo no)"
+echo "  rpiboot:  $([ -x /opt/usbboot/rpiboot ] && echo /opt/usbboot/rpiboot || echo MISSING)"
+echo "  golden:   $([ -f $PROV/golden.img ] && echo present || echo not set)"
+echo "  backups:  $(ls "$PROV/backups" 2>/dev/null | wc -l) file(s)"