- user_export.go: Remove defer s.Close() from checkExportRequest since
it returns the session to callers. Callers now own the session
lifecycle with their own defer s.Close(). Close session on all error
paths within checkExportRequest.
- user_delete.go: Close the read session immediately after Find() before
the per-user deletion loop, avoiding a long-lived transaction holding
locks unnecessarily.
- user/delete.go: Remove double s.Close() in notifyUsersScheduledForDeletion
by closing immediately after Find() instead of using both defer and
explicit close.
- caldav_token.go: Return nil token on Commit() error to prevent callers
from using an unpersisted token.
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