d393d01b97
- Fixed line normalization to trim trailing whitespace and strip carriage returns instead of removing all whitespace. - Fixed no-op detection to check array length equality before comparing lines, preventing false classification of multi-line expansions. - Added clarification to hashline tool documentation on `replace` operation semantics and `lines` boundary constraints. - Added test case validating single-line to multi-line expansion behavior and firstChangedLine calculation.