feat(insights): committed/discretionary chart, recurring charge detection, fees & interest audit

src/components/sidebar.tsx

@@ -8,6 +8,7 @@ const NAV_ITEMS = [
   { href: "/statements", label: "Statements", icon: "file-text" },
   { href: "/shared", label: "Shared", icon: "users" },
   { href: "/budget", label: "Analytics", icon: "bar-chart" },
+  { href: "/insights", label: "Insights", icon: "lightbulb" },
   { href: "/tags", label: "Tags", icon: "tag" },
   { href: "/rules", label: "Rules", icon: "settings" },
 ];
@@ -44,6 +45,11 @@ const ICONS: Record<string, React.ReactNode> = {
       <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
     </svg>
   ),
+  lightbulb: (
+    <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m1.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z" />
+    </svg>
+  ),
 };
 
 export function Sidebar() {