apps/web/src/components/ChatView.tsx  | 191 +++++++++++++++++++++++---------
 apps/web/src/lib/turnDiffTree.test.ts | 129 +++++++++++++++++++++
 apps/web/src/lib/turnDiffTree.ts      | 148 +++++++++++++++++++++++++
 3 files changed, 415 insertions(+), 53 deletions(-)