future iteration: standardize where geography IDs are pulled from

we should probably clean up where we grab all of our DBUIDs/etc. from. I think right now we are pulling from many various sources at an ad-hoc level, depending on the script. Should probably have one source of truth for all of the DBs/DAs/CSDs/etc? Preferably from the data catalogue if we can.

The issue names no specific files or tests; start by inventorying the scripts that pull DBUIDs, DAs, CSDs, and related geography IDs. Compare their current sources with the data catalogue, then define one agreed source of truth and update the affected scripts consistently. Done means the geography IDs no longer come from ad-hoc sources.

Written by the indexing model from the issue text.