/**
 * Best-effort project root for the checkout an agent action ran in.
 *
 * Walks upward from `cwd` looking for a `.git` directory or gitfile — the same
 * boundary `auden sync` implicitly uses when it collects a rule manifest from
 * `process.cwd()`. When nothing git-shaped is found, returns `resolve(cwd)` so
 * a non-git folder still gets a stable repo id (two sessions in the same folder
 * agree; two folders do not).
 */
export declare function resolveRepoRoot(cwd: string): string;
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