Add capability-gated surface methods across the bot packages so one handler
degrades gracefully per platform:
- thread.react / thread.unreact — emoji reactions (Slack, Discord, Telegram)
- thread.postEphemeral — only-you messages with a required DM fallback
- openModal (interaction/command-scoped) — structured forms (Slack rich,
Discord text-only), omitted on surfaces with no live interaction trigger
Spans @copilotkit/bot-ui, bot, bot-slack, bot-discord, bot-telegram with
per-adapter capability flags. Discord: open modals from slash-command
interactions, and never clear registered commands on an empty publish.
Bring the Slack adapter up to the current native streaming API surface
(chat.startStream/appendStream/stopStream, GA Oct 2025) and remove the
type-erasure workarounds.
- Remove `as unknown as Parameters<...>` casts in favor of the SDK's typed
args (ChatStartStream/AppendStream/StopStream/PostMessage/UpdateArguments).
- Stream a whole turn into ONE message: drop the per-message continuation
splitting (no documented cumulative cap; matches vercel/chat), keeping the
12k per-append chunking.
- Surface tool progress as native in-message `task_update` chunks
(task_display_mode "timeline"), degrading to `🔧` rows where
structured chunks are unavailable.
- Add opt-in AI feedback buttons via `slack({ feedback })` — a typed
context_actions/feedback_buttons row attached at stopStream, with clicks
routed adapter-locally (bypassing the engine's interaction dispatch).
- Scope recipient_user_id/recipient_team_id to channel targets only.
- Lower the native flush floor to ~600ms (appendStream Tier-4), legacy stays
800ms.
Engine: add an optional, backward-compatible RunRenderer.finish() hook called
after runAgentLoop so a turn-scoped renderer can finalize its stream.
JSX -> Block Kit rendering with per-element budgets and degradation,
Socket Mode ingress, opaque-id interactions (ack within 3s, run async),
chat.update message streaming with chunking, accent attachments, and
sender-profile resolution. Preserves the PoC's streaming, chunking,
and mrkdwn mechanics behind the PlatformAdapter boundary.
Alem Tuzlak