/**
 * Activity Log Parser
 *
 * Parses `.aiwg/activity.log` lines into structured entries. Lines that
 * don't match the expected format are silently skipped (the log is
 * append-only and may contain malformed entries from older tooling or
 * manual edits).
 *
 * @issue #934
 * @issue #964
 */
import { type ActivityEntry } from './types.js';
/**
 * Parse a single log line. Returns null when the line doesn't match the
 * canonical format or the operation token is unknown.
 */
export declare function parseLine(line: string): ActivityEntry | null;
/**
 * Parse the entire log content into entries. Skips blank lines and
 * lines that don't match the canonical format.
 */
export declare function parseLog(content: string): ActivityEntry[];
/**
 * Parse a `YYYY-MM-DD HH:MM` UTC timestamp into a Date. Returns null on
 * malformed input.
 */
export declare function parseUtcTimestamp(raw: string): Date | null;
/**
 * Parse a `YYYY-MM-DD` date (interpreted as UTC midnight). Returns null
 * on malformed input. Used by `--since` filtering.
 */
export declare function parseUtcDate(raw: string): Date | null;
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