dsh-session-tree-extension

In conversational workflows, history is strictly linear: once you move forward, revisiting an earlier prompt to explore an alternative line of reasoning usually means starting a fresh session, manually copying context, or abandoning the thread altogether. dsh-session-tree-extension turns DeepSeek-Harness sessions into an immutable, multi-branch conversation tree. Fork from any historical node and the new path coexists with the original; nothing is ever edited or deleted.

Three commands cover the full workflow. /tree renders the complete lineage of the current session, including ancestors, forks, and clones, as a single git-style merged graph where messages, tool calls, and model switches are all clickable, bindable nodes, shared prefixes are automatically deduplicated, and the active path stays highlighted. /fork grows a new branch from any earlier prompt while the original path stays intact; the new branch appears both in the merged graph and as an inline collapsible menu beneath its source session, with no page refresh needed. /clone duplicates the entire conversation into an independent session under the same project, keeping the source read-only and the clone freely continuable. All operations follow append-only semantics: navigation simply moves the active cursor, and existing data is never mutated.

It is built for developers and researchers who frequently need to revisit an earlier point in a conversation: comparing different model-switch paths from the same prompt, exploring an alternative reasoning route at a tool-call fork, or cloning a finished discussion as the starting point of a new experiment, all without losing or altering the original context.