fix(koja): remove over-broad short-URL redirect that 500'd the home page

The redirect source "/:slug([a-z0-9][a-z0-9-]*[a-z0-9])" matched single-segment
paths including the locale itself, so /fa redirected to /fa/cafe/fa (slug "fa")
and /en to /fa/cafe/en — non-existent cafés that returned Internal Server Error.
Visiting koja.meezi.ir (-> /fa) hit this. Removed the redirect so the home page
renders; short café URLs can be re-added via middleware with reserved-word guards.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

web/koja/next.config.ts

@@ -50,16 +50,11 @@ const nextConfig: NextConfig = {
       { protocol: "http", hostname: "**" },
     ],
   },
-  async redirects() {
+  // NOTE: the previous "short URL" redirect (/:slug → /fa/cafe/:slug) matched
-    return [
+  // single-segment paths INCLUDING the locale itself, so "/fa" redirected to
-      // Short URL: koja.meezi.ir/my-cafe → koja.meezi.ir/fa/cafe/my-cafe
+  // "/fa/cafe/fa" (and "/en" → "/fa/cafe/en") — a non-existent slug that 500'd
-      {
+  // the home page. Removed; re-add via middleware with explicit reserved-word
-        source: "/:slug([a-z0-9][a-z0-9-]*[a-z0-9])",
+  // exclusions if short café URLs are needed.
-        destination: "/fa/cafe/:slug",
-        permanent: false,
-      },
-    ];
-  },
 };
 
 export default withPWA(withNextIntl(nextConfig));