DeepSeek Harness Plugin: dsh-build-diff

DeepSeek Harness (DSH) has released dsh-build-diff, an Agent loop change review plugin designed to visually review changes made by the Agent to files in a workspace. This official dual-sided plugin has zero dependencies and provides core features such as line-level diff review in the right sidebar, one-click change rollback, and message bubble summaries. Installation requires dsh-better-sidebar as a prerequisite. Notes include: it only tracks loops after activation, large files cannot display diffs, reverting old changes may overwrite newer modifications, and there is a limit on the number of files that can be scanned.