Added a helper mod for Qwen3.5-397B recipe

mods/drop-caches/run.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# This mod will drop the FS caches every minute - useful to unstuck Qwen3.5-397B or other similar models during loading
+
+CMD='sync; echo 3 > /proc/sys/vm/drop_caches'
+LOG="/tmp/drop_caches.log"
+PIDFILE="/tmp/drop_caches.pid"
+
+nohup bash -c '
+  while true; do
+    '"$CMD"' >> "'"$LOG"'" 2>&1
+    sleep 60
+  done
+' >/dev/null 2>&1 &
+
+echo $! > "$PIDFILE"
+echo "Started drop_caches loop with PID $(cat "$PIDFILE"); log is available in $LOG"