type ProxyRuntimeMode = 'oauth-first' | 'oauth-burst' | 'api-first';
interface ProxyModeMarker {
    mode: ProxyRuntimeMode;
    updatedAt: number;
    /** Why the last transition happened. Useful for `claude switch status`
     *  diagnostics and for the statusline tooltip later. Free-form. */
    lastReason?: string;
    /** Optional: pid of the proxy process. Lets a future cleaner detect
     *  zombie markers from crashed proxies — not used today. */
    pid?: number;
}
/**
 * How long after the last `updatedAt` we still trust the marker. Beyond this
 * the proxy is almost certainly dead and we should fall back to the
 * persistent flag rather than show stale info. Generous default — the
 * proxy writes on every transition, but a quiet session might go minutes
 * between writes (no transitions happen on silent successful OAuth requests
 * because `recordOauthSuccess` only writes when it's changing state).
 */
export declare const PROXY_MODE_STALE_MS: number;
/**
 * Write the marker. Best-effort: failures are swallowed (telemetry must
 * never cascade into a request error). Atomic write so a partial file
 * can't be observed by a concurrently-running statusline read.
 */
export declare function writeProxyMode(accountsDirPath: string, mode: ProxyRuntimeMode, lastReason?: string): void;
/**
 * Delete the marker. Called from proxy `close()` so the statusline knows
 * the proxy is no longer running.
 */
export declare function clearProxyMode(accountsDirPath: string): void;
export declare function readProxyMode(accountsDirPath: string): ProxyModeMarker | null;
export {};