import type { ChildOutcome } from "./types.js";
export interface PortfolioReport {
    total: number;
    completed: number;
    failed: number;
    other: number;
    generatedAt: string;
    children: ChildOutcome[];
    rounds?: number;
}
export declare class PortfolioReporter {
    /**
     * Tally a list of ChildOutcome records into a PortfolioReport.
     *
     * - completed: status === "completed"
     * - failed:    status === "failed"
     * - other:     anything else (running / aborted / unknown)
     * - generatedAt: ISO-8601 timestamp at call time
     */
    build(outcomes: ChildOutcome[], opts?: {
        rounds?: number;
    }): PortfolioReport;
    /**
     * Atomically write the PortfolioReport to <rootDir>/.bober/fleet-report.json.
     *
     * Uses temp file + rename to prevent partial-write corruption (mirrors
     * writeRunState in src/state/run-state.ts).
     *
     * This is the ONE place in the fleet subsystem allowed to throw on IO failure.
     *
     * @returns The absolute path of the written file.
     */
    write(rootDir: string, report: PortfolioReport): Promise<string>;
}
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