Goldshell KD Box to BLAKE2b (XBT): Which Kadena Miners Can Switch, Plus a Safer Script

#!/bin/sh
# ===== EDIT THESE THREE =====
POOL_URL="stratum+tcp://YOUR-POOL-HOST:PORT"   # your XBT/BLAKE2b pool
POOL_USER="YOUR-WORKER-OR-ADDRESS"             # your worker / payout
CUTOFF=84                                       # stop if any board hits this degC
# ============================
POOL_PASS="x"

# write the BLAKE2b config (API stays on the box only)
cat >/mnt/config/blake2b-manual.json <<EOF
{
  "malgo":"blake2b",
  "api-listen":true,
  "api-allow":"W:127.0.0.1,A:127.0.0.1/32",
  "text-only":true,
  "skip-security-checks":100,
  "set":[
    "intchains_qomo:vfff=0.430000:740:100:100",
    "intchains_qomo:algo=blake2b(SC)"
  ],
  "pools":[
    {"url":"$POOL_URL","user":"$POOL_USER","pass":"$POOL_PASS","pool-priority":0}
  ]
}
EOF

# pause the stock miner (remember the PIDs so the watchdog can wake it)
STOCK="$(pidof xminerd 2>/dev/null) $(pidof minerd 2>/dev/null)"
for p in $STOCK; do kill -STOP "$p"; done
killall kdaminer 2>/dev/null
killall intminer 2>/dev/null
rm -f /tmp/intminer-blake2b.log

# start BLAKE2b
nohup /usr/bin/intminer -c /mnt/config/blake2b-manual.json >/tmp/intminer-blake2b.log 2>&1 </dev/null &

# best-effort HEAT WATCHDOG: if any board hits CUTOFF, or temp can't be read,
# stop BLAKE2b and resume the box's own controller (its fan control comes back).
( while true; do
    sleep 15
    T=$(/usr/bin/intminer-rpc devs 127.0.0.1 4028 2>/dev/null | tr ',' '\n' \
        | grep -i 'Temperature=' | sed 's/.*=//' | cut -d. -f1 | sort -nr | head -1)
    case "$T" in ''|*[!0-9]*) OVER=1 ;; *) [ "$T" -ge "$CUTOFF" ] && OVER=1 || OVER=0 ;; esac
    if [ "$OVER" = 1 ]; then
       killall intminer 2>/dev/null
       for p in $STOCK; do kill -CONT "$p" 2>/dev/null; done
       echo "WATCHDOG: stopped BLAKE2b, temp=${T:-unreadable} cutoff=$CUTOFF $(date)" >>/tmp/intminer-blake2b.log
       exit 0
    fi
  done ) >/dev/null 2>&1 &

echo "Started. Check status with:  /usr/bin/intminer-rpc summary 127.0.0.1 4028"
echo "Watch the log with:          tail -f /tmp/intminer-blake2b.log"