deepseek-harness/packages/client/ui-layout

@deepseek-ai/dsh-client-ui-layout

Shell plugin: three-column AppFrame (drag handles, concession chain) + ctx.layout viewing-state service (nav, panel widths, persist); defines the sidebar/conversation/details/conversation.empty slots. Contract: api-contracts v3 §5.

Slot declarations use the composed-props entry form (owner share, no full props): the exported OwnerShare contracts are SidebarOwnerProps / ConvOwnerProps / DetailsOwnerProps / EmptyOwnerProps — registrants reference them via OwnerOf<'sidebar' | ...> and compose their own injected share locally. The conversation entry authorizes conversation.empty delegation through children.

Model Experience

None, as the layout shell manages browser viewing state; nothing here reaches a model request.

KV Cache effect

None; this package neither assembles nor sends a provider request.

Known Limitations and Deferred Work

• Details open/width state is global — it does not follow the session (arbitrated for P-I); the per-session keyed upgrade slot is reserved.
• Concession-chain auto-close derives a zero width without touching the persisted open flag — the panel restores itself when the window widens; consumers must not read details.open as the rendered truth.
• Scroll anchoring during squeeze reflow is not implemented — deferred with the virtualized-list project.