Unclear It is not stated what, if anything, now signals this failure to the model instead of is_error.
What
When an artifact operation fails with a files_error, the tool result returned to the model no longer carries the is_error flag that previously marked it as an error result.
Why
This changes how the model perceives a files_error case; without the flag, it may no longer be treated as a hard failure in the same way, though the finding does not say what replaces that signal.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not stated what, if anything, now signals this failure to the model instead of `is_error`.