feat: add domains, ideas, layouts, widgets API modules

- Add DomainsModule with full CRUD, search, and activity logging
- Add IdeasModule with quick capture endpoint
- Add LayoutsModule for user dashboard layouts
- Add WidgetsModule for widget definitions (read-only)
- Update ActivityService with domain/idea logging methods
- Register all new modules in AppModule

packages/shared/src/types/index.ts

@@ -128,3 +128,6 @@ export * from "./database.types";
 
 // Export authentication types
 export * from "./auth.types";
+
+// Export widget types
+export * from "./widget.types";

packages/shared/src/types/widget.types.ts

@@ -0,0 +1,81 @@
+/**
+ * Widget and layout type definitions for HUD system
+ */
+
+import type { BaseEntity } from "./index";
+
+/**
+ * Widget placement in the grid
+ */
+export interface WidgetPlacement {
+  i: string; // Widget ID
+  x: number; // Column position
+  y: number; // Row position
+  w: number; // Width in grid units
+  h: number; // Height in grid units
+  minW?: number;
+  maxW?: number;
+  minH?: number;
+  maxH?: number;
+  static?: boolean;
+  isDraggable?: boolean;
+  isResizable?: boolean;
+}
+
+/**
+ * Widget definition from database
+ */
+export interface WidgetDefinition extends BaseEntity {
+  name: string;
+  displayName: string;
+  description: string | null;
+  component: string;
+  defaultWidth: number;
+  defaultHeight: number;
+  minWidth: number;
+  minHeight: number;
+  maxWidth: number | null;
+  maxHeight: number | null;
+  configSchema: Record<string, unknown>;
+  isActive: boolean;
+}
+
+/**
+ * User layout configuration
+ */
+export interface UserLayout extends BaseEntity {
+  workspaceId: string;
+  userId: string;
+  name: string;
+  isDefault: boolean;
+  layout: WidgetPlacement[];
+  metadata: Record<string, unknown>;
+}
+
+/**
+ * Layout configuration for editor
+ */
+export interface LayoutConfig {
+  id: string;
+  name: string;
+  layout: WidgetPlacement[];
+}
+
+/**
+ * Available widget types (component names)
+ */
+export type WidgetComponentType =
+  | "TasksWidget"
+  | "CalendarWidget"
+  | "QuickCaptureWidget"
+  | "AgentStatusWidget";
+
+/**
+ * Props for individual widgets
+ */
+export interface WidgetProps {
+  id: string;
+  config?: Record<string, unknown>;
+  onEdit?: () => void;
+  onRemove?: () => void;
+}