Drop "contributors" from the footer copyright line

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/src/components/layout/footer.tsx

@@ -6,7 +6,7 @@ export function Footer() {
   return (
     <footer className="border-t">
       <div className="text-muted-foreground mx-auto flex w-full max-w-5xl flex-col items-center gap-2 px-4 py-4 text-xs sm:flex-row sm:justify-between">
-        <span>© {new Date().getFullYear()} TriggerShell contributors</span>
+        <span>© {new Date().getFullYear()} TriggerShell</span>
         <div className="flex items-center gap-4">
           <Link href="/docs" className="hover:text-foreground">
             Docs