import type { AssistantMessage, TextContent } from "@caupulican/pi-ai";
export type AssistantTextPhase = "commentary" | "final_answer";
/** Read OpenAI Responses phase metadata without trusting arbitrary signature JSON shapes. */
export declare function assistantTextPhase(content: Pick<TextContent, "textSignature">): AssistantTextPhase | undefined;
export declare function isAssistantCommentary(content: Pick<TextContent, "textSignature">): boolean;
/** Project prose commentary onto the bounded activity lane; structured control payloads stay inspector-only. */
export declare function latestAssistantCommentaryLabel(message: AssistantMessage): string | undefined;
//# sourceMappingURL=message-phase.d.ts.map