function 
    /usr/local/lib/janet/spork/tasker.janet  on  line  271 , column  1 
    (all-tasks  tasker  &opt  detailed )
    Get  an  array  of  all  task  ids  for  which  there  is  still  data  on  disk.  
    If  `detailed`  is  truthy , return  full  task  metadata  instead  of  ids.