- clarify-tool: top-align the help icon (items-start + mt-px) so it sits
beside the first line of a multi-line question instead of floating
centered against the whole block.
- tool-fallback: a non-zero exit code alone no longer paints the whole
terminal/execute_code card red. grep no-match, diff differences, and
piped commands routinely exit non-zero while producing useful output;
only flag an error when the command produced no output. Explicit error
signals (error field, success=false, status=error, isError) still go red.
- Add regression tests covering the exit-code -> status matrix.
6bbc5eefa0