import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
export declare const PIW_SHORTCUT = "ctrl+shift+r";
export declare const PIW_SHORTCUT_HINT = "Ctrl+Shift+R piw";
export declare const VIEWER_PLACEMENTS: readonly ["right", "below", "left", "above", "tab", "workspace"];
export type ViewerPlacement = (typeof VIEWER_PLACEMENTS)[number];
export type WorkflowViewTarget = {
    runId: string;
    workflowName: string;
};
export type HerdrCapability = {
    available: true;
} | {
    available: false;
    reason: string;
};
export type ViewerOpenResult = {
    paneId: string;
    reused: boolean;
    warning?: string;
};
type Exec = ExtensionAPI["exec"];
type HerdrPane = {
    paneId: string;
    tabId: string;
    workspaceId: string;
    label?: string;
};
export declare class HerdrWorkflowViewer {
    private readonly exec;
    private readonly env;
    private readonly knownPanes;
    private readonly opening;
    constructor(exec: Exec, env?: NodeJS.ProcessEnv);
    probe(): Promise<HerdrCapability>;
    focusExisting(target: WorkflowViewTarget): Promise<boolean>;
    open(target: WorkflowViewTarget, placement: ViewerPlacement, cwd: string): Promise<ViewerOpenResult>;
    private openOnce;
    private findAndFocus;
    find(target: WorkflowViewTarget): Promise<HerdrPane | undefined>;
    private currentPane;
    private openPluginPane;
    private openWorkspace;
    private closePane;
    private run;
    private runJson;
}
export declare function parseViewerPlacement(value: string): ViewerPlacement | undefined;
export declare function viewerPaneLabel(runId: string): string;
export {};