Intent of sessionDiffAggregator.test|title=computeSessionDiffs incremental: recomputes file edited in current turn|occurrence=1, sessionDiffAggregator.test|title=computeSessionDiffs incremental slow path: re-edit of existing file falls back to getAllFileEdits|occurrence=1, +1

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.