import type { AgentMessage } from "@earendil-works/pi-agent-core";
import type { AgentSessionInternalSurface as AgentSession } from "./agent-session-methods.ts";
import { type VerbatimCompactionResult } from "./compaction/index.ts";
/** Compact tool-expanded context without scheduling a second Agent continuation. */
export declare function _preflightPostToolContext(this: AgentSession, messages: AgentMessage[], signal?: AbortSignal): Promise<AgentMessage[]>;
/** Gate the transformed message context immediately before provider conversion. */
export declare function _finishPostToolCompactionPreflight(this: AgentSession, messages: AgentMessage[]): AgentMessage[];
export interface PendingPostToolCompactionGuard {
    hardInputLimit: number;
    result: VerbatimCompactionResult;
}
export declare const agentSessionPostToolCompactionMethods: {
    _preflightPostToolContext: typeof _preflightPostToolContext;
    _finishPostToolCompactionPreflight: typeof _finishPostToolCompactionPreflight;
};
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