Previous regex only matched literal bash/source calls with bare paths.
Orchestrators use shell variables like \$SCRIPT_DIR/../Transcodes/script.sh
and \$SCRIPTS_ROOT/Category/script.sh — the old pattern missed all of these.
New regex captures the Category/script.sh portion from either pattern,
requires at least one subdirectory (excludes load_config.sh and root-level
utilities), and validates each candidate against the filesystem.
transcode_management now correctly shows transcode_cleanup and transcode_manager.
Orchestrators using master.conf config arrays for dynamic dispatch still show
no children — correct, as those lists cannot be statically parsed.