/**
 * Snapshot-store bridge across the two public DSH client module layouts.
 *
 * DSH 0.1.2 moved the store engine from the dynamic
 * `@deepseek-ai/dsh-client-runtime/client` row into the shell-seeded
 * `@deepseek-ai/dsh-client-store` platform module. Keep the probe dynamic so
 * esbuild does not turn both candidates into eager top-level requires: the
 * loader must only resolve the module that exists in the running DSH cohort.
 */
/** Writable observable snapshot used by the settings card. */
export interface SnapshotStore<T> {
    getSnapshot(): T;
    subscribe(listener: () => void): () => void;
    update(mutator: (draft: T) => void): void;
    set(next: T): void;
}
/** Settings state consumed by the staged form. */
export interface SettingsScopeSnapshot<T> {
    status: 'loading' | 'ready' | 'unavailable';
    value: T | undefined;
    base: unknown;
    user: unknown;
    revision: number | undefined;
    writable: boolean;
    mode: 'host' | 'memory';
}
/** Stable subset shared by the legacy and DSH 0.1.2 settings scopes. */
export interface SettingsScope<T> {
    getSnapshot(): SettingsScopeSnapshot<T>;
    subscribe(listener: () => void): () => void;
    set(field: string, value: unknown): Promise<void>;
    unset(field: string): Promise<void>;
}
export declare const createSnapshotStore: <T>(init: T, options?: {
    flush?: "raf" | "sync";
    persist?: {
        name: string;
    };
}) => SnapshotStore<T>;