export declare const PLAN_GENERATION_MARKER = "program-pipeline:plan-generation";
export declare const LEGACY_PLAN_GENERATION = "legacy";
export interface PlanManifestEnvelope {
    program?: {
        planGeneration?: unknown;
    };
}
export declare function readPlanGeneration(manifestPath: string): Promise<string>;
export declare function specGeneration(content: string): string | undefined;
export declare function stampSpecGeneration(content: string, generation: string): string;
/** Atomically replace a text artifact, leaving the previous file intact on failure. */
export declare function atomicWriteText(path: string, content: string): Promise<void>;
/** Stable fallback for plans created before generation metadata existed. */
export declare function legacyGenerationFingerprint(manifest: string, program: string): string;
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