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/components/error-boundary.tsx

@@ -0,0 +1,116 @@
+"use client";
+
+import { Component, type ReactNode } from "react";
+import Link from "next/link";
+
+interface ErrorBoundaryProps {
+  children: ReactNode;
+}
+
+interface ErrorBoundaryState {
+  hasError: boolean;
+  error?: Error;
+}
+
+/**
+ * Error boundary component for graceful error handling
+ * Uses PDA-friendly language and calm visual design
+ */
+export class ErrorBoundary extends Component<
+  ErrorBoundaryProps,
+  ErrorBoundaryState
+> {
+  constructor(props: ErrorBoundaryProps) {
+    super(props);
+    this.state = { hasError: false };
+  }
+
+  static getDerivedStateFromError(error: Error): ErrorBoundaryState {
+    return {
+      hasError: true,
+      error,
+    };
+  }
+
+  componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
+    // Log to console for debugging (could also send to error tracking service)
+    console.error("Component error:", error, errorInfo);
+  }
+
+  handleReload = () => {
+    window.location.reload();
+  };
+
+  render() {
+    if (this.state.hasError) {
+      return (
+        <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4">
+          <div className="max-w-md w-full text-center space-y-6">
+            {/* Icon - calm blue instead of alarming red */}
+            <div className="flex justify-center">
+              <div className="rounded-full bg-blue-100 p-3">
+                <svg
+                  className="w-8 h-8 text-blue-600"
+                  fill="none"
+                  stroke="currentColor"
+                  viewBox="0 0 24 24"
+                >
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    strokeWidth={2}
+                    d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+                  />
+                </svg>
+              </div>
+            </div>
+
+            {/* Message - PDA-friendly, no harsh language */}
+            <div className="space-y-2">
+              <h1 className="text-2xl font-semibold text-gray-900">
+                Something unexpected happened
+              </h1>
+              <p className="text-gray-600">
+                The page ran into an issue while loading. You can try refreshing
+                or head back home to continue.
+              </p>
+            </div>
+
+            {/* Actions */}
+            <div className="flex flex-col gap-3 pt-4">
+              <button
+                onClick={this.handleReload}
+                className="inline-flex items-center justify-center px-4 py-2 border border-transparent text-base font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
+              >
+                Refresh page
+              </button>
+
+              <Link
+                href="/"
+                className="inline-flex items-center justify-center px-4 py-2 border border-gray-300 text-base font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
+              >
+                Go home
+              </Link>
+            </div>
+
+            {/* Technical details in dev mode */}
+            {process.env.NODE_ENV === "development" && this.state.error && (
+              <details className="mt-8 text-left">
+                <summary className="cursor-pointer text-sm text-gray-500 hover:text-gray-700">
+                  Technical details
+                </summary>
+                <pre className="mt-2 text-xs text-gray-600 bg-gray-100 p-3 rounded overflow-auto max-h-40">
+                  {this.state.error.message}
+                  {"\n\n"}
+                  {this.state.error.stack}
+                </pre>
+              </details>
+            )}
+          </div>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}