Build a compact, structured memo of why an attempt failed. Returns '' when there is nothing useful to say (e.g. a clean pass — callers only emit it on non-passing terminals). Always bounded to maxChars.
maxChars
Build a compact, structured memo of why an attempt failed. Returns '' when there is nothing useful to say (e.g. a clean pass — callers only emit it on non-passing terminals). Always bounded to
maxChars.