Chasing down CodeRabbit's note about callers of
execute_single_native_tool_call turned up a fifth place this exception was
being downgraded: the experimental executor's parallel branch wrapped
future.result() in a broad except and folded the abort into a fake tool
result, so the remaining parallel calls carried on. The sequential path and
crew_agent_executor's parallel branch were already fine.
Five separate handlers have swallowed this during review, so added a guard
test asserting the passthrough at every site rather than trusting the next
one gets spotted.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ETacm2dMASfpMAYUiDu5YG
e0f354e1a6