Under the hood
Useful2 Signal2
Storage naming rules now give specific error messages and document the key layout.
What's wrong with this entry?
Anonymous. No account, no email.
What
The storage layer gained explicit tables of which names are streams and which are scopes, with a specific message for each misuse, plus allow-lists of permitted directory names and files. They document the layout: task ids, mailbox teammates and cache ids are individual keys, not scopes you can narrow by.
Evidence
names one task value, a key, not a scope: a list scope narrows with listId only
Strings lifted out of the shipped bundle, so the claim above can be checked against them.