Move the interactive pi-tui front door into @deepseek-ai/dsh-tui while keeping @deepseek-ai/dsh-stdio line-oriented for pipes. Select the terminal package in the demo app, preserve logger ownership, and cover the production Loader composition with a PTY smoke test.
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@deepseek-ai/dsh-user-interaction
Abstract user-interaction seam. It owns ctx.userInteraction, the service a model-facing tool or permission plugin uses when it needs to pause work and ask the human for a decision.
Service: UserInteractionService (ctx key: userInteraction)
Public API
ctx.userInteraction.registerProvider(provider): () => voidRegister the UI-side provider. Only one provider may be active in a context; disposal unregisters it.ctx.userInteraction.ask(request): Promise<AskUserQuestionAnswer>Ask the active provider and wait for the answer.
Key Types
AskUserQuestionRequest—{ questions: [{ id, question, header?, options?, multiSelect? }], agent?, signal? }.AskUserQuestionOption—{ label, description? }.AskUserQuestionAnswer—{ answers: [{ id, selected, custom? }] }.UserInteractionProvider— UI implementation withask(request).UserInteractionError—HarnessErrorsubclass with codes such asEMPTY_QUESTIONS,NO_PROVIDER,DUPLICATE_PROVIDER, andASK_ABORTED.
When an answer includes custom, selected is empty; custom text is an override rather than a supplement to selected choices.
Role
This is the interface package. Model-facing consumers such as @deepseek-ai/dsh-tool-ask-user depend on this seam; UI front doors such as the interactive dsh-tui, line-oriented dsh-stdio, and structured dsh-acp channels provide the provider. The loop stays unchanged: a tool call awaits a promise, and the tool result resumes the normal agent loop.
Model Experience
Indirectly, through dsh-tool-ask-user, which retains a successful provider answer as compact JSON or one of these failures: Error: ask_user_question was aborted before the user answered, Error: ask_user_question requires at least one question, Error: no user-interaction provider is registered, or Error: <message>. Waiting for the human adds no tokens.
Known Limitations and Deferred Work
- One provider per context — there is no routing or fan-out to multiple UIs; a second registration throws
DUPLICATE_PROVIDER, and with none registeredask()throwsNO_PROVIDERrather than degrading. - The vocabulary is the question-form shape only — selectable options plus optional custom text; richer interaction shapes (file pickers, diff-preview confirmations) have no seam vocabulary yet.