/**
 * Registry-owned persistence for the detach handle at
 * `<project>/.skaile/deploy/handle.json` (locked decision #13).
 *
 * The file is a `{ targetId, payload }` envelope: `targetId` selects which
 * `DeployTarget` to look up, `payload` is that target's opaque restore slice.
 * The store never interprets `payload` — it only validates the envelope shape.
 */
/** Parsed detach-handle envelope. `payload` is the target's opaque restore slice. */
export interface StoredHandle {
    targetId: string;
    payload: unknown;
}
/** Absolute path to the detach-handle file for a project. */
export declare function handlePath(projectDir: string): string;
/** Write the detach handle, creating `.skaile/deploy/` if missing. */
export declare function writeHandle(projectDir: string, targetId: string, payload: unknown): Promise<void>;
/** Read + validate the detach handle. Returns null when absent or malformed. */
export declare function readHandle(projectDir: string): Promise<StoredHandle | null>;
/** Remove the detach handle. Idempotent — a missing file is not an error. */
export declare function clearHandle(projectDir: string): Promise<void>;
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