ctx↔React glue: createSnapshotStore (zustand vanilla + immer + subscribeWithSelector + rafFlush + opt-in persist), bindSnapshotSelector, SessionProvider (dependency-inverted), scopedSlots outlet, RootBindingProvider, useInvoke. Contract: api-contracts v3 §2.

Model Experience

None, as the ctx↔React glue runs entirely in the browser; nothing here reaches a model request.

KV Cache effect

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

Known Limitations and Deferred Work

The persist middleware corrupts primitive-state stores — it object-spreads state on save, so a SnapshotStore<string> round-trips as a character map; consumers with primitive state hand-roll persistence instead (ui-conversation drafts is the precedent).
UseSession is deliberately wide (object snapshot) — the dependency direction (runtime → web-react, never the reverse) keeps the real ConversationSnapshot type out of reach; session-slot consumers narrow once at their boundary.
renderSlot is the single P-I form — no Suspense, no per-entry lazy loading; the progressive-rendering surface returns with its own project.