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

apps/web/src/components/hud/WidgetRenderer.tsx

@@ -0,0 +1,74 @@
+/**
+ * Widget renderer - renders the appropriate widget component based on type
+ */
+
+import { WidgetWrapper } from "./WidgetWrapper";
+import { TasksWidget, CalendarWidget, QuickCaptureWidget, AgentStatusWidget } from "@/components/widgets";
+import type { WidgetPlacement } from "@mosaic/shared";
+
+export interface WidgetRendererProps {
+  widget: WidgetPlacement;
+  isEditing?: boolean;
+  onRemove?: (widgetId: string) => void;
+}
+
+const WIDGET_COMPONENTS = {
+  tasks: TasksWidget,
+  calendar: CalendarWidget,
+  "quick-capture": QuickCaptureWidget,
+  "agent-status": AgentStatusWidget,
+};
+
+const WIDGET_CONFIG = {
+  tasks: {
+    displayName: "Tasks",
+    description: "View and manage your tasks",
+  },
+  calendar: {
+    displayName: "Calendar",
+    description: "Upcoming events and schedule",
+  },
+  "quick-capture": {
+    displayName: "Quick Capture",
+    description: "Capture ideas and notes",
+  },
+  "agent-status": {
+    displayName: "Agent Status",
+    description: "View running agent sessions",
+  },
+};
+
+export function WidgetRenderer({ widget, isEditing = false, onRemove }: WidgetRendererProps) {
+  // Extract widget type from ID (e.g., "tasks-123" -> "tasks")
+  const widgetType = widget.i.split("-")[0] as keyof typeof WIDGET_COMPONENTS;
+  const WidgetComponent = WIDGET_COMPONENTS[widgetType];
+  const config = WIDGET_CONFIG[widgetType] || { displayName: "Widget", description: "" };
+
+  if (!WidgetComponent) {
+    const wrapperProps = {
+      id: widget.i,
+      title: "Unknown Widget",
+      isEditing: isEditing,
+      ...(onRemove && { onRemove: () => onRemove(widget.i) }),
+    };
+
+    return (
+      <WidgetWrapper {...wrapperProps}>
+        <div className="text-gray-500 text-sm">Widget type not found: {widgetType}</div>
+      </WidgetWrapper>
+    );
+  }
+
+  const wrapperProps = {
+    id: widget.i,
+    title: config.displayName,
+    isEditing: isEditing,
+    ...(onRemove && { onRemove: () => onRemove(widget.i) }),
+  };
+
+  return (
+    <WidgetWrapper {...wrapperProps}>
+      <WidgetComponent id={widget.i} />
+    </WidgetWrapper>
+  );
+}