dsh-tui-model-switch

In dsh-TUI, the main session and its subagents share a single model route by default. Yet in real workflows, subagent tasks - summarization, retrieval, formatting - are often lighter and do not justify the same costly provider or highest reasoning effort as the main conversation. dsh-tui-model-switch exists to change that: it lets you assign a dedicated provider, model, and reasoning level to subagents while leaving the main session route untouched.

Every setting is persisted in the dsh settings service under the model-switch namespace and edited directly through the TUI /settings screen in the Model Routing section, with live reload on change. You pick the subagent model from the configured provider catalog or type the provider/model manually, and optionally set reasoning effort (low / medium / high / max). At runtime the plugin wraps subagent start paths to merge the custom selection into agentOptions, and injects reasoning effort via the child agent request interceptor so it only affects subagent-origin sessions. Explicit provider or model fields set by the caller always take precedence over this setting.

If you already rely on dsh-TUI and dispatch subagents regularly, this plugin lets you tier costs and capabilities per task type without altering main-session behavior. Switching the subagent model to Follow Main Session restores the exact pre-install behavior. Non-TUI hosts continue to work as before: the command simply reports the active route as plain text and the settings section does not render.