import type { Api, Model } from "@bastani/pi-ai/compat";
import type { ThinkingLevel } from "@earendil-works/pi-agent-core";
import type { ReadonlySessionManager } from "../session-manager.ts";
export interface BashSessionContext {
    sessionManager: ReadonlySessionManager;
    model: Model<Api> | undefined;
    thinkingLevel?: ThinkingLevel;
}
/** Capture one internally consistent session snapshot at command execution time. */
export declare function snapshotBashSessionEnvironment(context: BashSessionContext | undefined, exposeSessionEnvironment: boolean): NodeJS.ProcessEnv;
/** Overlay named session metadata while preserving every unrelated caller variable verbatim. */
export declare function applyBashSessionEnvironment(env: NodeJS.ProcessEnv, snapshot: NodeJS.ProcessEnv): void;
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