import type { DrizzleExecutor } from "../drizzle.js";
import type { MutationHint } from "../chat/types.js";
/**
 * Removes system plugins whose built-in source is no longer present, including their pluginInstallations and cascade-owned pluginInstallationVariables.
 * The transaction records syncEvents for the deleted plugin identities so startup pruning is durable and clients can reconcile the plugins area.
 */
export declare function pluginRemoveMissingBuiltins(executor: DrizzleExecutor, availableSourceReferences: readonly string[]): Promise<{
    hint?: MutationHint;
    plugins: Array<{
        pluginId: string;
        containerNames: string[];
    }>;
}>;
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