import { type WorkbenchGroupDimension, type WorkbenchLayoutState } from './agent-workbench-model.js';
export interface WorkbenchStorage {
    getItem(key: string): string | null;
    setItem(key: string, value: string): void;
    removeItem?(key: string): void;
}
export declare function workbenchLayoutStorageKey(sessionId: string): string;
export declare function loadWorkbenchLayout(sessionId: string, storage: WorkbenchStorage | null | undefined): WorkbenchLayoutState;
/** Persists layout primitives only. URLs, grants, cookies and frame state are never serialised. */
export declare function saveWorkbenchLayout(sessionId: string, layout: WorkbenchLayoutState, storage: WorkbenchStorage | null | undefined): boolean;
/**
 * Rail geometry belongs to the window, not to a session. Keeping it per session
 * made the sidebar jump to a different width on every selection change, so the
 * width and the collapsed flag live in one global record instead.
 */
export interface WorkbenchRailPrefs {
    railWidth: number;
    railCollapsed: boolean;
}
export declare function loadWorkbenchRailPrefs(storage: WorkbenchStorage | null | undefined): WorkbenchRailPrefs | null;
export declare function saveWorkbenchRailPrefs(storage: WorkbenchStorage | null | undefined, prefs: WorkbenchRailPrefs): boolean;
/**
 * 未读账本，纯前端的一份小记录：
 * - `seen[sessionId]`  —— 你最后一次「点开」这个会话的时刻，未读的清零线。
 * - `unread[sessionId]` —— 本地侦测到 bot 干完活（working→idle）的时刻。
 * 两者都是 epoch 毫秒。`unread > seen` 即未读；页面关闭期间的动静另有活动时间兜底。
 * 只存 id 和时间戳，不存标题、聊天内容或任何链接。
 */
export interface WorkbenchSeenLedger {
    seen: Record<string, number>;
    unread: Record<string, number>;
}
export declare function emptyWorkbenchSeenLedger(): WorkbenchSeenLedger;
export declare function pruneWorkbenchSeenLedger(ledger: WorkbenchSeenLedger, max?: number): WorkbenchSeenLedger;
/** 坏数据（不是 JSON、不是对象、两张表都不成形）一律回 null，让调用方走首次基线。 */
export declare function loadWorkbenchSeenLedger(storage: WorkbenchStorage | null | undefined): WorkbenchSeenLedger | null;
export declare function saveWorkbenchSeenLedger(storage: WorkbenchStorage | null | undefined, ledger: WorkbenchSeenLedger): boolean;
/** 分组维度是全局偏好（不分会话）。白名单外的值一律当没存过。 */
export declare function loadWorkbenchGroupDimension(storage: WorkbenchStorage | null | undefined): WorkbenchGroupDimension | null;
export declare function saveWorkbenchGroupDimension(storage: WorkbenchStorage | null | undefined, dimension: WorkbenchGroupDimension): boolean;
/**
 * 折叠起来的分组 key（`bot:Builder` 这种带维度前缀的稳定 key，全维度唯一，
 * 所以一份平铺的数组就够，不需要按维度分表）。
 * 坏 JSON 或压根不是数组 → null，让调用方走「全部展开」的默认；数组里混进
 * 非字符串只剔掉那一项，不为一颗老鼠屎丢掉整份记忆。
 */
export declare function loadWorkbenchCollapsedGroups(storage: WorkbenchStorage | null | undefined): string[] | null;
export declare function saveWorkbenchCollapsedGroups(storage: WorkbenchStorage | null | undefined, keys: Iterable<string>): boolean;
//# sourceMappingURL=agent-workbench-storage.d.ts.map