The apply_file_diffs tool now includes a required "summary" field so the
model provides a brief description of edits. This surfaces as the title
on the diff panel instead of showing only +/- line counts.
Also propagates is_error from tool result content back to the model so it
can distinguish failed tool calls from successful ones.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Ryan Ward