/**
 * Disk-backed reactive key-value store for plugin state.
 *
 * Keeps an in-memory map that can be flushed to / loaded from a JSON file.
 * Supports glob-style subscriptions (`connector:*`, `*`).
 *
 * State is persisted to `<projectDir>/.skaile/plugin-state.json`.
 * The instance is available on {@link WorkspacePlugin} as the public `store`
 * field after `boot()` resolves.
 *
 * @docLink packages/workspace-plugin/concepts#plugin-store
 */
export declare class PluginStore {
    private readonly statePath;
    private data;
    private subscribers;
    constructor(statePath: string);
    /** Synchronous read from in-memory map. */
    get<T>(key: string): T | undefined;
    /** Write to in-memory map and notify matching subscribers. */
    set<T>(key: string, value: T): void;
    /** Remove key and notify matching subscribers. */
    delete(key: string): void;
    /**
     * Subscribe to changes matching a glob-style pattern.
     * `*` matches any sequence of characters.
     * Returns an unsubscribe function.
     */
    subscribe(pattern: string, handler: (key: string, value: unknown) => void): () => void;
    /** Rehydrate from disk JSON. Missing file = empty store (no throw). */
    load(): Promise<void>;
    /** Write entire store to disk as JSON. Creates parent dirs if needed. */
    flush(): Promise<void>;
    private notify;
}
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