refactor: replace overloaded surface terminology

packages/client/web-react/src/index.ts

@@ -6,7 +6,7 @@ export { bindSnapshotSelector } from './bind.ts'
 /**
  * Selector hook over a session's conversation snapshot. Wide (`object`) by
  * default inside this dependency-inverted package; runtime narrows it once at
- * its export surface (`UseSession<ConversationSnapshot>`) — the snapshot type
+ * its exports (`UseSession<ConversationSnapshot>`) — the snapshot type
  * never flows back into web-react.
  */
 export type UseSession<Snap extends object = object> = SnapshotSelectorHook<Snap>

packages/client/web-react/src/session-provider.tsx

@@ -20,7 +20,7 @@ export const HostContext = createContext<SlotRendererHost | null>(null)
 /**
  * Read the installed renderer host; throws outside the rendered root tree
  * (framework components must not render detached from the renderer).
- * @returns the host surface.
+ * @returns the host API.
  */
 export function useHost(): SlotRendererHost {
   const host = useContext(HostContext)
@@ -132,7 +132,7 @@ export function SessionMaybeProvider({ children }: { children: ReactNode }) {
   )
 }
 
-/** SessionProvider surface: render-prop body plus the no-session branch. */
+/** SessionProvider API: render-prop body plus the no-session branch. */
 export interface SessionProviderProps {
   /** No-session body (also covers a current id whose session cannot be resolved). */
   empty?: (() => ReactNode) | undefined

packages/client/web-react/tests/scoped-slots-real-core.spec.tsx

@@ -3,7 +3,7 @@
  * Integration against the real ui-slots SlotCore through a passthrough host:
  * registrations go through the real register() (options form, children
  * declaration), and the outlets ride the real subscribe/getVersion/entries/
- * isLive surfaces — microtask-batched notifications, mutation-stable entry
+ * isLive APIs — microtask-batched notifications, mutation-stable entry
  * references (the cache axis), and ledger-fed stale bindings are the
  * real-core semantics the fake-host suite cannot vouch for.
  */