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)/calendar/page.tsx

@@ -0,0 +1,27 @@
+"use client";
+
+import { Calendar } from "@/components/calendar/Calendar";
+import { mockEvents } from "@/lib/api/events";
+
+export default function CalendarPage() {
+  // TODO: Replace with real API call when backend is ready
+  // const { data: events, isLoading } = useQuery({
+  //   queryKey: ["events"],
+  //   queryFn: fetchEvents,
+  // });
+
+  const events = mockEvents;
+  const isLoading = false;
+
+  return (
+    <main className="container mx-auto px-4 py-8">
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold text-gray-900">Calendar</h1>
+        <p className="text-gray-600 mt-2">
+          View your schedule at a glance
+        </p>
+      </div>
+      <Calendar events={events} isLoading={isLoading} />
+    </main>
+  );
+}