/**
 * `src/services/code/post-compact-checkpoint.ts`
 *
 * The checkpoint read layer behind the post-compact auto-resume detector
 * (`post-compact-detector.ts`): the two directory/name constants, the
 * checkpoint record shapes, the same-day test, and the defensive single-file
 * read. Moved verbatim (wave 3, file-size cap campaign) so the detector stays
 * under the 300 raw-line cap — no detection decision lives here. These names
 * were module-private to the detector before the move and stay private to it
 * in effect: the detector imports them and does not re-export them, so the
 * module's public surface is unchanged.
 */
export declare const CHECKPOINTS_DIR = "checkpoints";
export declare const CHECKPOINT_EXT = ".json";
export interface CheckpointFile {
    readonly path: string;
    readonly mtime: Date;
    readonly content: CheckpointContent;
}
interface CheckpointContent {
    readonly currentPlan?: string;
    readonly openQuestions?: readonly string[];
    readonly recentDecisions?: readonly string[];
    readonly mode?: string;
}
export declare function isToday(d: Date, now: Date): boolean;
export declare function safeReadCheckpoint(absPath: string): CheckpointFile | null;
export {};