Lower dankserver compute threads 8→7 to leave CPU headroom

scripts/frank-default-small.env

@@ -30,5 +30,6 @@ UBATCH_SIZE=2048
 # Load the model into RAM rather than lazy-mapping it. The MoE experts live on
 # CPU, so eager RAM load avoids page faults during decode (uses ~31GB RAM).
 NO_MMAP=1
-THREADS=8
+# Compute threads lowered to 7 so other processes on the box keep a core.
+THREADS=7
 THREADS_HTTP=8