/**
 * Pre-flight writability check for `init` (extracted from the init orchestrator).
 */
/**
 * Fail closed before journal/promotion work when the project root cannot accept
 * authored files. Soft "rolled-back" InitResult shapes hide EACCES behind
 * status:ok + exit 1; agents and platform-acceptance require a structured
 * `command.error` that names `opensip-cli.config.yml` and the permission failure.
 *
 * @throws {SystemError} When the project directory is not writable.
 */
export declare function assertProjectRootWritableForInit(cwd: string): void;
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