/**
 * Lowest zmx release whose `send` only queues input instead of taking client
 * leadership (upstream commit 8ba312d7 "fix(send): preserve client leadership",
 * shipped in v0.7.0). Below this floor `send` steals the leader and rewrites
 * the terminal size, which corrupts the `history` screen botmux reads.
 */
export declare const ZMX_MIN_VERSION: [number, number, number];
/**
 * Strip zmx session identity vars inherited from a parent zmx attach.
 *
 * ZMX_DIR is intentionally preserved: it is the user's explicit socket-dir
 * selection. ZMX_SESSION_PREFIX is stripped so botmux's deterministic bmx-*
 * names stay literal and dashboard/API probes can match them.
 */
export declare function zmxEnv(env?: NodeJS.ProcessEnv): NodeJS.ProcessEnv;
export declare function probeZmxVersion(): {
    ok: true;
    version: string;
} | {
    ok: false;
    reason: string;
};
export declare function probeZmxFunctional(): {
    ok: true;
    version: string;
} | {
    ok: false;
    reason: string;
};
export declare function parseZmxVersion(output: string): [number, number, number] | null;
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