export interface DqlRuntimeVersionStatus {
    /** Version of the code actually serving this process. */
    runningVersion: string;
    /** ISO timestamp of process start — identifies a server started before a rebuild/upgrade. */
    processStartedAt: string;
    /** Where the running code lives: the project's node_modules, a global install, or a dev checkout. */
    invocationSource: 'project_local' | 'global' | 'dev_or_unknown';
    /** Range declared for @duckcodeailabs/dql-cli in the project package.json, if any. */
    projectPinnedRange?: string;
    /** Version installed in the project's node_modules, if any. */
    projectInstalledVersion?: string;
    /** Latest published version from npm, when the background check has succeeded. */
    latestKnownVersion?: string;
    latestCheckStatus: 'ok' | 'unknown';
    /** Human-readable drift warnings; empty means no drift detected. */
    drift: string[];
    upgradeCommand?: string;
}
/** Best-effort latest published version; never throws, never blocks longer than 2s. */
export declare function fetchLatestPublishedDqlVersion(): Promise<string | undefined>;
/** Synchronous view of the cached latest version (health endpoints must stay fast). */
export declare function cachedLatestPublishedDqlVersion(): string | undefined;
export declare function resolveDqlRuntimeVersionStatus(input: {
    projectRoot: string;
    runningVersion: string;
    runtimeUrl?: string;
}): DqlRuntimeVersionStatus;
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