people_named_to decides whom the edit page and the share dialog name:
the reader, the holder's owner, anyone sharing a team with the reader and,
for the owner, whoever sponsored something on the holder. A resource's
owner, named as whom to ask or whose credentials a tool uses, also needs
the reader to see that resource. Sponsors, runs_as, contact and account
in resource_states and sponsors in sponsor_details all follow it; anyone
else is left unnamed and the pages say someone else.
A tool's run details (note, credential_mode, account, writes) come from
one function and only for a tool that runs. The share dialog keys each
person's own account on the per_user_account note, as the notice does,
and the unused noteKey helper and its string are gone.