com_scheduler's task edit view renders a params fieldset legend as
Text::_($fieldset->label ?: 'COM_SCHEDULER_FIELDSET_'.$name). The
run_profile / run_snapshot fieldsets had no `label` attribute, so it fell
back to an undefined generated key (COM_SCHEDULER_RUN_PROFILE_FIELDSET_LABEL)
and showed the raw constant. Give each fieldset a label attribute pointing
to a plugin-defined constant, and define them in en-GB/en-US.
Claude-Session: https://claude.ai/code/session_01WbGBN9VyRK61zczYWcCQ2i