/** Parses `opencode --version` output into the major protocol line: 1 (opencode-ai) or 2
 *  (@opencode/cli). Pure so both launch.ts (the launcher) and extension.ts (the model catalog) can
 *  detect the line from the same rule with no fallback for anything else. */
export declare function opencodeLine(raw: string, bin: string): 1 | 2;
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