**As a user,** I want all edits from agents delivered as diffs, **so that** the editor never destructively rewrites my document. **AC** Agents cannot overwrite the full document without a diff. Patch apply supports accept/reject. Diff view shows minimal deltas.
As a user, I want all edits from agents delivered as diffs, so that the editor never destructively rewrites my document.
AC
Agents cannot overwrite the full document without a diff.
Patch apply supports accept/reject.
Diff view shows minimal deltas.