The definitive slot model for the web client, replacing the first-generation
define/register two-step, ScopedSlots whitelist faces, and binding handles:
- 'root' is the only a-priori slot (SlotsService built-in); the shell renders
exactly ctx.slots.renderSlot('root', {}).
- register is the single API: children = slot declaration + render
authorization + runtime spec in one options object; misconfiguration fails
loud at load (duplicate declaration, undeclared contribution, one store
handle under two scopes).
- Component props arrive in four auto-derived shares: PropsRuntime<K>
(owner params + session/global standard kits via declare-merge),
PropsRenderSlots<S>, PropsStore<H>, and the inject business face.
sessionId is framework-supplied; hooks are framework-made only.
- Framework store seat: defineStore factories declare schema/actions/persist;
read = useStore, write = baked actions only; store scope derives from the
mounting entry; per-session persist keys and clearPersisted lifecycle.
- inject factories read the apply closure's own ctx (binding handles retired;
root-ctx back door closed); SessionProvider is self-wired render-prop.
- Rendering sits behind the SlotRenderer install seam; runtime stays
React-free; ownership ledger keyed to the single entry axis closes the
stale-authority window (StaleAuthorizationError probes).
Docs: the slot type-chain note is refreshed in place as the slot system
standard RFC (bilingual pair re-recorded); the web client architecture RFC
defers its slot sections there; packages/client/AGENTS.md gains the slot and
props discipline; gui-testing/web-styling notes drop missions/ references.
Tests: suites rewritten to the standard (props fed directly, real store
engines via createXXXStore().create(), no render machinery); load-time
negative samples for declaration/authorization/store conflicts; verified by
real-host playwright run (three columns, empty state, collapse, keyed session
remount, cross-slot selection sharing).
docs(ui-sidebar): point contract reference at the committed slot standard RFC
missions/ is workspace-local and never committed; the README must not cite it.
@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. No entry declares children (declaring it requires the registered component to carry the slots face — reserved for future business slots): delegation authority is the component-side whitelist, i.e. AppFrame's ScopedSlots<FrameSlotKey> face over sidebar/conversation/details/conversation.empty. Since the root-slot rework the frame itself registers into 'root' and renders those child slots at its own render sites; the shell only renders 'root'.
The export surface is the cross-package contract only: the AppFrame trio (+ AppFrameProps) consumed by the web shell's assembly, LayoutService with its store shapes (NavState/PanelState/ViewId), and the OwnerShare contracts. The concession-chain solver (computeColumns) and its geometry constants are package-internal; tests import them from /src.
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.openas the rendered truth. - Scroll anchoring during squeeze reflow is not implemented — deferred with the virtualized-list project.