Package portal and close UI API gaps

cezen-portal/update-system-status.sh

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+#!/usr/bin/env bash
+# update-system-status.sh — Writes system-status.json for the Nexus One AI portal.
+# Run via cron every 30 seconds (cron minimum is 1 minute; use two entries offset by 30s).
+#
+# CRON SETUP (run as the portal server user):
+#   crontab -e
+#   Add these two lines:
+#     * * * * * /opt/cezen-portal/update-system-status.sh
+#     * * * * * sleep 30 && /opt/cezen-portal/update-system-status.sh
+#
+# OUTPUT: /opt/cezen-portal/system-status.json
+# Adjust PORTAL_DIR below to match your actual portal directory.
+
+PORTAL_DIR="/opt/cezen-portal"
+OUT="$PORTAL_DIR/system-status.json"
+TMP="$OUT.tmp"
+
+# ── CPU load (1-minute average as a percentage of total cores) ──
+CPU_CORES=$(nproc)
+CPU_LOAD_RAW=$(awk '{print $1}' /proc/loadavg)
+CPU_PCT=$(awk "BEGIN {v=$CPU_LOAD_RAW/$CPU_CORES*100; if(v>100)v=100; printf \"%d\", v}")
+
+# ── RAM ──
+read -r total used free shared buff cache available <<< $(free -b | awk 'NR==2{print $2,$3,$4,$5,$6,$7,$7}')
+RAM_TOTAL_GB=$(awk "BEGIN {printf \"%.0f\", $total/1024/1024/1024}")
+RAM_USED_GB=$(awk "BEGIN {printf \"%.0f\", ($total-$available)/1024/1024/1024}")
+RAM_PCT=$(awk "BEGIN {printf \"%d\", ($total-$available)/$total*100}")
+
+# ── Disk (root filesystem) ──
+DISK_INFO=$(df -B1 / | awk 'NR==2{print $2,$3,$5}')
+read -r DISK_TOTAL_B DISK_USED_B DISK_PCT_RAW <<< "$DISK_INFO"
+DISK_PCT=${DISK_PCT_RAW/\%/}
+DISK_TOTAL_GB=$(awk "BEGIN {printf \"%.1f\", $DISK_TOTAL_B/1024/1024/1024/1024}")
+DISK_USED_GB=$(awk "BEGIN {printf \"%.0f\", $DISK_USED_B/1024/1024/1024}")
+
+# ── GPU (NVIDIA) ──
+if command -v nvidia-smi &>/dev/null; then
+  GPU_INFO=$(nvidia-smi --query-gpu=utilization.gpu,temperature.gpu --format=csv,noheader,nounits 2>/dev/null | head -1)
+  GPU_PCT=$(echo "$GPU_INFO" | awk -F', ' '{print $1}' | tr -d ' ')
+  GPU_TEMP=$(echo "$GPU_INFO" | awk -F', ' '{print $2}' | tr -d ' ')
+else
+  GPU_PCT="null"
+  GPU_TEMP="null"
+fi
+
+# ── Uptime ──
+UPTIME_SEC=$(awk '{printf "%d", $1}' /proc/uptime)
+UPTIME_DAYS=$((UPTIME_SEC / 86400))
+UPTIME_HRS=$(( (UPTIME_SEC % 86400) / 3600 ))
+UPTIME_MINS=$(( (UPTIME_SEC % 3600) / 60 ))
+if [ "$UPTIME_DAYS" -gt 0 ]; then
+  UPTIME_STR="${UPTIME_DAYS}d ${UPTIME_HRS}h ${UPTIME_MINS}m"
+elif [ "$UPTIME_HRS" -gt 0 ]; then
+  UPTIME_STR="${UPTIME_HRS}h ${UPTIME_MINS}m"
+else
+  UPTIME_STR="${UPTIME_MINS} minutes"
+fi
+
+# ── Write JSON atomically ──
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+cat > "$TMP" <<JSON
+{
+  "updated": "$TIMESTAMP",
+  "cpu_pct": $CPU_PCT,
+  "gpu_pct": $GPU_PCT,
+  "gpu_temp": $GPU_TEMP,
+  "ram_pct": $RAM_PCT,
+  "ram_used": "${RAM_USED_GB} GB",
+  "ram_total": "${RAM_TOTAL_GB} GB",
+  "disk_pct": $DISK_PCT,
+  "disk_used": "${DISK_USED_GB} GB",
+  "disk_total": "${DISK_TOTAL_GB} TB",
+  "uptime": "$UPTIME_STR"
+}
+JSON
+
+mv "$TMP" "$OUT"