fix: remove duplicate DashboardSchema interface declaration causing TS2717 build error

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/types/src/complex.ts

@@ -17,35 +17,6 @@
 
 import type { BaseSchema, SchemaNode } from './base';
 
-/**
- * Dashboard Component Schema
- * (Report / BI View)
- */
-export interface DashboardSchema extends BaseSchema {
-  type: 'dashboard';
-  /**
-   * Layout Grid Configuration (e.g. 12 column grid)
-   */
-  columns?: number;
-  /**
-   * Widget gap
-   */
-  gap?: number;
-  /**
-   * Dashboard Widgets
-   */
-  widgets: Array<{
-    /** Unique Widget ID */
-    id: string;
-    /** Widget Title */
-    title?: string;
-    /** Widget Component (Chart, Statistic, List, etc) */
-    component: SchemaNode;
-    /** Grid Position: x, y, w, h */
-    layout?: { x: number; y: number; w: number; h: number };
-  }>;
-}
-
 /**
  * Kanban column
  */