dsh-session-graph

Juggling multiple parallel AI agent sessions inside DeepSeek Harness quickly turns branching history, merge provenance, and sub-agent ownership into an invisible tangle buried in linear text logs. dsh-session-graph turns that hidden structure into a draggable, zoomable, filterable canvas so you can read spatial relationships instead of scrolling through timestamps, all without leaving the conversation view.

Four capabilities do the heavy lifting. Branch lineages, merge provenance edges, and folded sub-agent derivations each render in a distinct visual style, making backbone and sideline obvious at a glance. The canvas itself supports drag, snap alignment, collapse, zoom, pan, minimap, and auto-relayout, and every arrangement you make stays in browser storage without touching a single session log. Picking two or three sessions lets you create a merge target whose sources are captured at immutable event boundaries, leaving the original sessions and their existing lineages completely intact. On-demand session digests retain only user instructions and final assistant text, make one auxiliary model call for a concise overview with key outcomes and open items, and cache the result in host memory as a read-only projection that never enters the session log or alters lineage.

This plugin is aimed at developers and teams who run three or more parallel agent branches, need to merge deliverables on a schedule, or want to recap a long session without re-reading every turn. It plugs in as a pure browser-side extension, adds no extra runtime dependencies, and leaves Harness model routing, persistence, and the agent sandbox untouched. Install it and a Graph tab appears beside the standard conversation tabs, ready to use on any non-blank session.