fix: use plugin-sdk exports in bluebubbles

src/plugin-sdk/index.ts

@@ -98,6 +98,7 @@ export {
 export type { RuntimeEnv } from "../runtime.js";
 export type { WizardPrompter } from "../wizard/prompts.js";
 export { DEFAULT_ACCOUNT_ID, normalizeAccountId } from "../routing/session-key.js";
+export { resolveAckReaction } from "../agents/identity.js";
 export type { ReplyPayload } from "../auto-reply/types.js";
 export { SILENT_REPLY_TOKEN, isSilentReplyText } from "../auto-reply/tokens.js";
 export {