/** How the host's people will reach the agent — `vendo init`'s FIRST question.
    It decides what gets scaffolded and where the run says to continue; the
    wired route is the same in all three, so picking wrong costs nothing. */
export type InitUseCase = "embedded" | "agent-loop" | "mcp";
export declare const INIT_USE_CASES: readonly InitUseCase[];
export declare function readUseCase(root: string): Promise<InitUseCase | undefined>;
/**
 * The env var this install's model wiring actually reads: `VENDO_API_KEY` when
 * the models answer was Vendo Cloud (the runtime ladder resolves it and the
 * composition names no provider), else the provider key its `models` line
 * names. Recording the KEY rather than the answer is what lets `vendo doctor`
 * grade the one variable that changes anything — it used to name three provider
 * keys the resolver never reads. Absent when no key resolved at all.
 */
export declare function readModelKey(root: string): Promise<string | undefined>;
export declare function writeInstallRecord(root: string, record: {
    useCase: InitUseCase;
    modelKey: string | null;
}): Promise<void>;