zhu1090093659/@linxin666/dsh-liangshen

LiangShen agent preset plus its composer lever for the dsh web GUI. The host half declares the bundled preset to the harness's agent-preset registry at activation (declare = enabled), so the preset is selectable for new sessions without writing anything into the harness home; the preset keeps a minimal persona with standing working discipline while the harness's own user-role agent-instructions injection delivers the workspace instructions (the optional `instructionSource: system-prompt` mode lifts them into the prompt instead), and declares one tool presentation for the session's whole lifetime (default `presentation: 'both'`, where the wire collapses to the `run_code` transport and every other tool is reached through the generated SDK; `native` keeps the assembled roster, `ptc` keeps only the transport). High-fan-out tool families (default `mcp__*`) stay paged out of the wire until the preset's own `tool_activate` tool loads their namespace (LRU cap three, state replayed from the durable session event stream), and the tool catalog — exactly the on-wire tools plus paged-out namespace summaries — and a one-line working-context projection travel as durable user messages republished only on change. The browser half adds a slot-machine lever left of the model selector on the new-session screen to toggle the mode. Hot-pluggable via cordis.patch.yml + profile symlink, no dsh source changes.