A driver named 'drv' (env form DRV) matched every sibling's id-form variable
env:<PREFIX>DRV_<12HEX>_... as 'another instance', breaking the recommended id
convention fleet-wide - including for a name that pre-dates the rule.
ReferenceNames is split into ReferenceNamesId / ReferenceNamesName; a reference
whose instance part is id-shaped (secret: DRV-<12 hex>, env: DRV_<12 HEX>[_...])
is matched by id only. DescribeNameChangeProblemsAsync also refuses new names
whose env form is DRV or starts with an id form (IsReservedInstanceName) at
create, /raw rename and config-modal update.
Co-Authored-By: Claude <noreply@anthropic.com>
Joseph Doherty
d68dff0946