refactor: strip stats and unit switcher from top bar

Remove weight unit switcher pills and collection stats (items, weight,
spent) from TotalsBar. Top bar now shows only logo/title and user menu.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/client/routes/__root.tsx

@@ -114,23 +114,8 @@ function RootLayout() {
 	const currentThreadId = threadMatch ? Number(threadMatch.threadId) : null;
 
 	const isDashboard = !!matchRoute({ to: "/" });
-	const isCollection = !!matchRoute({ to: "/collection", fuzzy: true });
-	const isSetupDetail = !!matchRoute({ to: "/setups/$setupId", fuzzy: true });
 
-	// Determine TotalsBar props based on current route
-	const _totalsBarProps = isDashboard
-		? { stats: [] as Array<{ label: string; value: string }> } // Title only, no stats, no link
-		: isSetupDetail
-			? { linkTo: "/" } // Setup detail will render its own local bar; root bar just has link
-			: { linkTo: "/" }; // All other pages: default stats + link to dashboard
-
-	// On dashboard, don't show the default global stats - pass empty stats
-	// On collection, let TotalsBar fetch its own global stats (default behavior)
-	const finalTotalsProps = isDashboard
-		? { stats: [] as Array<{ label: string; value: string }> }
-		: isCollection
-			? { linkTo: "/" }
-			: { linkTo: "/" };
+	const totalsBarProps = isDashboard ? {} : { linkTo: "/" };
 
 	// Show loading while checking auth
 	if (authLoading) {
@@ -170,7 +155,7 @@ function RootLayout() {
 
 	return (
 		<div className="min-h-screen bg-gray-50">
-			<TotalsBar {...finalTotalsProps} />
+			<TotalsBar {...totalsBarProps} />
 			<Outlet />
 
 			{/* Item Confirm Delete Dialog */}