- music_parallelism.sh: restore batched-pgrep/xdotool optimization that exists
in /usr/local/bin/ but had been lost from the repo, plus bump intervals
(FAST 0.5s->2s, IDLE 3s->10s) to further cut fork rate
- organize_downloads.sh: replace per-file tr fork with bash 4 ${var,,}
parameter expansion, replace per-log-line $(date) fork with printf %()T builtin
Follow-up to fork-storm fixes after observing 122 CPU-hours of date calls
in a 90-minute window (root cause was nvidia-pmon-logger.sh, fixed separately).
