import type { ScopeAuthor } from '../types';
/**
 * Lightweight email shape check — must stay in sync with validateScopeAuthor in schema.ts.
 * Not full RFC validation; only rejects values that would fail sprint.json schema.
 */
export declare function isPlausibleAuthorEmail(email: string): boolean;
/**
 * Resolve the scope creator from local Git identity.
 *
 * Best-effort only: returns an author when at least one of `user.name` or a
 * schema-valid `user.email` is available. Present fields only; missing/invalid
 * fields are omitted (not empty strings).
 *
 * **Never throws and never blocks scope init.** Missing git, empty config,
 * timeouts, malformed values, or unexpected errors all yield `null`.
 * Does not fall back to USER/LOGNAME/KYRO_ACTOR — those are not scope-author identity.
 */
export declare function resolveScopeAuthorFromGit(options?: {
    cwd?: string;
    now?: () => Date;
}): ScopeAuthor | null;
/** Human-readable author line for CLI output (handles name-only / email-only). */
export declare function formatScopeAuthor(author: ScopeAuthor): string;
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