The new master source-tool smoke reads isError and content from a V3
nested tool-result block. After integration with the V4 release, that
block no longer exists: the durable message itself has role tool,
toolCallId, isError and result content. The old assertions fail to
compile and cannot verify the current writer's output.
Read the existing V4 fields while retaining the real source-profile
launch, single Tools instance, call identity, sandbox error and shell
output checks. Do not impose the old single-wrapper cardinality on the
flat content array. This adapts the incoming regression test without
changing the V4 format, migration implementation or stored recordings.
Tianyi Cui
5da1515286