export type JournalStatus = 'keep' | 'discard' | 'partial';
export interface JournalRow {
    task: string;
    hypothesis?: string;
    approach?: string;
    outcome?: string;
    status: JournalStatus;
    /** ΔC — complexity delta, e.g. "+12/-3" or "-". */
    deltaComplexity?: string;
    notes?: string;
}
/** Local YYYY-MM-DD. */
export declare function journalDateStr(d?: Date): string;
/** Path of today's dated journal file. */
export declare function journalFilePath(root: string, date?: Date): string;
/**
 * Append one structured row to the current dated journal file (creating it with a
 * header if missing) plus one index line to .autodev/JOURNAL.md (deduped).
 * Pure file I/O — safe to call from the loop. Returns the dated file path.
 */
export declare function appendJournalRow(root: string, row: JournalRow, date?: Date): string;
/**
 * Deterministically tally keep/discard/partial rows across all dated journal
 * files. Used by the journalLearn periodic pre-pass so the model gets a compact
 * digest instead of re-scanning every file by hand. Returns null when there is
 * nothing to tally (keeps the periodic prompt byte-identical to before).
 */
export declare function tallyJournal(root: string): {
    keep: number;
    discard: number;
    partial: number;
    total: number;
    recentDiscards: string[];
    digest: string;
} | null;