Derived artifacts live with the object they describe when that object is
saved: a scenario's reports render into <scenario>/reports/ and its
levcost results cache into <scenario>/levcost/; models and repositories
use their store entries the same way. For IN-MEMORY objects the output is
considered temporary and lands in these project-level folders instead:
get_reports_path() (default reports/) and get_levcost_cache_path()
(default levcosts/).
Usage
set_reports_path(path = NULL)
get_reports_path()
set_levcost_cache_path(path = NULL)
get_levcost_cache_path()