import type { PendingInjection, TransformMessagesOutput } from "./types.js";
import type { ToolAfterOutput } from "./types.js";
export type RuntimeContextMessageInjectionResult = "observed" | "fallback" | "duplicate-suppressed" | "unavailable";
export declare const RUNTIME_CONTEXT_TOOL_METADATA_KEY = "personaHarnessRuntimeContext";
export declare function markRuntimeContextToolOutput(output: ToolAfterOutput, injection: PendingInjection): void;
export declare function hasObservedRuntimeContextToolOutput(output: TransformMessagesOutput, sessionID: string, injection: PendingInjection): boolean;
export declare function injectTextIntoLatestUserMessage(output: TransformMessagesOutput, block: string, marker: string): boolean;
export declare function injectIntoLatestUserMessage(output: TransformMessagesOutput, injection: PendingInjection): boolean;
export declare function injectRuntimeContextIntoLatestUserMessage(output: TransformMessagesOutput, injection: PendingInjection): RuntimeContextMessageInjectionResult;