Address code review feedback on error pages

- Move statusIcon out of ErrorBoundary render as a plain module-level
  function to avoid React re-creating a component type on every render
- Collapse 401 action into a single descriptive button label
  ("Go to Home Page to Sign In") instead of a fragmented button + hint
- Fix details/summary border radius collision by using overflow-hidden
  on the container and removing rounded-md from the summary element;
  separate the pre block with a border-t instead

https://claude.ai/code/session_011jv8desa5vhSkjZHSjWZiV

app/root.tsx

@@ -89,7 +89,6 @@ export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
   let message = "An unexpected error occurred. Please try again later.";
   let stack: string | undefined;
   let showSignInHint = false;
-
   if (isRouteErrorResponse(error)) {
     status = error.status;
     switch (error.status) {
@@ -119,15 +118,6 @@ export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
     stack = import.meta.env.DEV ? error.stack : undefined;
   }
 
-  const StatusIcon = () => {
-    const cls = "h-14 w-14 text-muted-foreground";
-    if (status === 401) return <Lock className={cls} />;
-    if (status === 403) return <ShieldOff className={cls} />;
-    if (status === 404) return <FileQuestion className={cls} />;
-    if (status >= 500) return <ServerCrash className={cls} />;
-    return <AlertCircle className={cls} />;
-  };
-
   return (
     <div className="min-h-screen bg-background text-foreground flex flex-col">
       <header className="border-b border-border/40 bg-background/95 backdrop-blur">
@@ -145,7 +135,7 @@ export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
           </div>
 
           <div className="flex justify-center">
-            <StatusIcon />
+            {statusIcon(status)}
           </div>
 
           <div className="space-y-2">
@@ -153,26 +143,21 @@ export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
             <p className="text-muted-foreground">{message}</p>
           </div>
 
-          <div className="flex flex-col sm:flex-row gap-3 justify-center pt-2">
+          <div className="flex justify-center pt-2">
             <a
               href="/"
               className="inline-flex items-center justify-center rounded-md text-sm font-medium bg-primary text-primary-foreground hover:bg-primary/90 h-9 px-4 py-2 transition-colors"
             >
-              Go Home
+              {showSignInHint ? "Go to Home Page to Sign In" : "Go Home"}
             </a>
-            {showSignInHint && (
-              <p className="text-sm text-muted-foreground self-center">
-                You can sign in from the home page.
-              </p>
-            )}
           </div>
 
           {stack && (
-            <details className="text-left mt-8 border border-border rounded-md">
+            <details className="text-left mt-8 border border-border rounded-md overflow-hidden">
-              <summary className="cursor-pointer text-sm text-muted-foreground px-4 py-3 hover:bg-muted/50 rounded-md">
+              <summary className="cursor-pointer text-sm text-muted-foreground px-4 py-3 hover:bg-muted/50">
                 Stack trace (development only)
               </summary>
-              <pre className="p-4 overflow-x-auto text-xs text-muted-foreground">
+              <pre className="p-4 overflow-x-auto text-xs text-muted-foreground border-t border-border">
                 <code>{stack}</code>
               </pre>
             </details>
@@ -182,3 +167,12 @@ export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
     </div>
   );
 }
+
+function statusIcon(status: number) {
+  const cls = "h-14 w-14 text-muted-foreground";
+  if (status === 401) return <Lock className={cls} />;
+  if (status === 403) return <ShieldOff className={cls} />;
+  if (status === 404) return <FileQuestion className={cls} />;
+  if (status >= 500) return <ServerCrash className={cls} />;
+  return <AlertCircle className={cls} />;
+}