feat: add package icon as favicon and in top bar title

Add Lucide package icon as SVG favicon (white stroke) and display it
next to the GearBox title in the TotalsBar.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/client/components/TotalsBar.tsx

@@ -1,6 +1,7 @@
 import { Link } from "@tanstack/react-router";
 import { useTotals } from "../hooks/useTotals";
 import { formatPrice, formatWeight } from "../lib/formatters";
+import { LucideIcon } from "../lib/iconData";
 
 interface TotalsBarProps {
 	title?: string;
@@ -30,15 +31,22 @@ export function TotalsBar({
 					{ label: "spent", value: formatPrice(null) },
 				]);
 
+	const titleContent = (
+		<span className="flex items-center gap-2">
+			<LucideIcon name="package" size={20} className="text-gray-500" />
+			{title}
+		</span>
+	);
+
 	const titleElement = linkTo ? (
 		<Link
 			to={linkTo}
 			className="text-lg font-semibold text-gray-900 hover:text-gray-600 transition-colors"
 		>
-			{title}
+			{titleContent}
 		</Link>
 	) : (
-		<h1 className="text-lg font-semibold text-gray-900">{title}</h1>
+		<h1 className="text-lg font-semibold text-gray-900">{titleContent}</h1>
 	);
 
 	// If stats prop is explicitly an empty array, show title only (dashboard mode)