Update package READMEs + ARCHITECTURE for the assistant pane, native streaming,
and the new onThreadStarted / setSuggestedPrompts / setTitle surface. Reverse
the slack.mdx callout that told users to delete the assistant scopes (now
required), and enable the pane in the examples/slack manifest (assistant_view +
assistant:write + assistant_thread_* events) with a dev-ex onThreadStarted
greeting and the assistant config.
createBot with handler registration (onMention/onMessage/onInterrupt/
onCommand), the agent run/tool/interrupt loop, content-stable JSX
action binding with cold-path rehydration from a pluggable ActionStore,
the PlatformAdapter boundary, capability-gated thread methods, one
shared BotToolContext, defineBotTool / defineBotCommand, and typed
interaction/interrupt handlers. Includes fake-adapter/fake-agent
testing utilities.
Alem Tuzlak