Svelte package handoff

packages/svelte owns only the Svelte 5 application shell, typed snippets, semantic CSS mapping, specialized ChoiceList, and generic native StandardComponent. It consumes createChatStore, ChatContainer, Message, InputBar, ThinkingIndicator, and ToolConfirmation from @agentskit/svelte@0.4.3.

Never add another controller, store, stream consumer, lifecycle implementation, confirmation engine, or container primitive. The internal keyed binding calls the upstream stop action before replacing an actively streaming store and preserves application/session state.

Checks: pnpm --filter @agentskit/chat-svelte lint && pnpm --filter @agentskit/chat-svelte test && pnpm --filter @agentskit/chat-svelte build.