/**
 * Validate a path lives inside projectRoot.
 *
 * Returns `{ok: true, abs}` if `inputPath` resolves to a location
 * within `projectRoot`. Returns `{ok: false}` for:
 *   - null/undefined inputs (buggy upstream responses)
 *   - paths that resolve outside the project root (e.g. "../../etc/passwd")
 *
 * Mirrors `sandboxPath` from src/orchestrator/tools/handlers.ts:31-45
 * but returns a result envelope instead of throwing — graph code drops
 * out-of-sandbox NodeRefs silently rather than crashing the agent loop.
 */
export declare function sandboxNodePath(projectRoot: string, inputPath: string | null | undefined): {
    ok: true;
    abs: string;
} | {
    ok: false;
};
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