/**
 * ViewPanel — one pane in the ResizableView grid.
 *
 * Renders a Card whose header is a Tabs bar and whose body is the active tab's
 * content area. It is both a drag SOURCE (tabs can be picked up) and a drag
 * TARGET with two independent drop zones:
 *
 *   ┌─────────────────────────────────┐
 *   │  [Tab A] [Tab B] [Tab C]        │  ← TABS DROP ZONE
 *   ├─────────────────────────────────┤
 *   │                                 │
 *   │         content area            │  ← CONTENT DROP ZONE
 *   │   (split overlay shown here)    │
 *   │                                 │
 *   └─────────────────────────────────┘
 *
 * TABS DROP ZONE
 *   Dropping here reorders tabs or moves a tab from another panel.
 *   A thin 2 px bar (::before / ::after pseudo-element on the neighbouring Tab)
 *   previews the insertion slot. The slot is determined by which horizontal half
 *   of each Tab the cursor is over (left-half → insert before, right-half →
 *   insert after). The dropped tab becomes active only for cross-panel drops.
 *
 * CONTENT DROP ZONE
 *   A semi-transparent overlay divides the content area into five zones using
 *   `HOVER_OFFSET` (33 %) margins:
 *
 *     ┌──────┬──────────┬──────┐
 *     │      │   top    │      │
 *     │ left │  center  │ right│
 *     │      │  bottom  │      │
 *     └──────┴──────────┴──────┘
 *
 *   center → append tab to this panel (no split)
 *   left/right/top/bottom → split the panel and place a new panel on that side
 */
export interface ViewTab {
    path: string;
    label?: string;
}
export interface Panel {
    /** Stable unique ID assigned by ResizableView on first render. Used as v-for key. */
    id?: string;
    tabs: ViewTab[];
}
interface Props {
    panel: Panel;
}
type __VLS_Slots = {
    tab: (props: {
        tab: ViewTab;
        panel: Panel;
    }) => any;
};
declare const __VLS_base: import('vue').DefineComponent<Props, {}, {}, {}, {}, import('vue').ComponentOptionsMixin, import('vue').ComponentOptionsMixin, {}, string, import('vue').PublicProps, Readonly<Props> & Readonly<{}>, {}, {}, {}, {}, string, import('vue').ComponentProvideOptions, false, {}, any>;
declare const __VLS_export: __VLS_WithSlots<typeof __VLS_base, __VLS_Slots>;
declare const _default: typeof __VLS_export;
export default _default;
type __VLS_WithSlots<T, S> = T & {
    new (): {
        $slots: S;
    };
};