delltig/dsh-multi-model-collab: Assign a task to multiple large models simultaneously

This paper introduces the DeepSeek Harness plugin `delltig/dsh-multi-model-collab`. It registers the `multi_model_run` tool to the current Profile. When the main Agent is invoked, it internally initiates multiple model calls via `ctx.llm` in parallel (or based on main/sub roles), aggregates them using `all`/`vote`/`longest` strategies, and returns the independent results of each model along with an aggregated summary. The article details two installation methods—installing to the Profile and using the `--patch` overlay—along with a complete table of configuration fields, tool input parameters, and return structures. It also covers edge case behaviors such as partial failure, total failure, cancellation, and model reference resolution. Finally, it explains applicable scenarios and known limitations, including that calls do not write to the session, there are no tool loops, and the `vote` strategy performs text normalization voting.