test(caddy): cover invalid path branches; ci: handle go test non-zero when coverage file exists

frontend/src/pages/Setup.tsx

@@ -91,9 +91,10 @@ const Setup: React.FC = () => {
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-100 dark:bg-gray-900 py-12 px-4 sm:px-6 lg:px-8">
       <div className="max-w-md w-full space-y-8 bg-white dark:bg-gray-800 p-8 rounded-lg shadow-md">
-        <div>
+        <div className="flex flex-col items-center">
+          <img src="/logo.png" alt="Charon" className="h-12 w-auto mb-4" />
           <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900 dark:text-white">
-            Welcome to CPM+
+            Welcome to Charon
           </h2>
           <p className="mt-2 text-center text-sm text-gray-600 dark:text-gray-400">
             Create your administrator account to get started.