crash-recovery 2

DSH undo/rollback system: snapshot config files on change, undo/redo the last action from the WebUI or by chat, and roll back broken plugin trees without reinstalling. Works even when DSH fails to boot (offline CLI + GUI).

Task gate for the DeepSeek Harness: every conversation must end by declaring complete, wait, or blocked; undeclared stops are nudged, and abnormal sessions are revived after a host restart.