feat(#37-41): Add domains, ideas, relationships, agents, widgets schema

Schema additions for issues #37-41:

New models:
- Domain (#37): Life domains (work, marriage, homelab, etc.)
- Idea (#38): Brain dumps with pgvector embeddings
- Relationship (#39): Generic entity linking (blocks, depends_on)
- Agent (#40): ClawdBot agent tracking with metrics
- AgentSession (#40): Conversation session tracking
- WidgetDefinition (#41): HUD widget registry
- UserLayout (#41): Per-user dashboard configuration

Updated models:
- Task, Event, Project: Added domainId foreign key
- User, Workspace: Added new relations

New enums:
- IdeaStatus: CAPTURED, PROCESSING, ACTIONABLE, ARCHIVED, DISCARDED
- RelationshipType: BLOCKS, BLOCKED_BY, DEPENDS_ON, etc.
- AgentStatus: IDLE, WORKING, WAITING, ERROR, TERMINATED
- EntityType: Added IDEA, DOMAIN

Migration: 20260129182803_add_domains_ideas_agents_widgets

apps/web/src/app/(authenticated)/layout.tsx

@@ -0,0 +1,37 @@
+"use client";
+
+import { useEffect } from "react";
+import { useRouter } from "next/navigation";
+import { useAuth } from "@/lib/auth/auth-context";
+import { Navigation } from "@/components/layout/Navigation";
+import type { ReactNode } from "react";
+
+export default function AuthenticatedLayout({ children }: { children: ReactNode }) {
+  const router = useRouter();
+  const { isAuthenticated, isLoading } = useAuth();
+
+  useEffect(() => {
+    if (!isLoading && !isAuthenticated) {
+      router.push("/login");
+    }
+  }, [isAuthenticated, isLoading, router]);
+
+  if (isLoading) {
+    return (
+      <div className="flex min-h-screen items-center justify-center">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-gray-900"></div>
+      </div>
+    );
+  }
+
+  if (!isAuthenticated) {
+    return null;
+  }
+
+  return (
+    <div className="min-h-screen bg-gray-50">
+      <Navigation />
+      <div className="pt-16">{children}</div>
+    </div>
+  );
+}