chore: Enable "curly" rule to avoid single-statement if confusion/errors.

src/gateway/server-mobile-nodes.ts

@@ -2,7 +2,9 @@ import type { NodeRegistry } from "./node-registry.js";
 
 const isMobilePlatform = (platform: unknown): boolean => {
   const p = typeof platform === "string" ? platform.trim().toLowerCase() : "";
-  if (!p) return false;
+  if (!p) {
+    return false;
+  }
   return p.startsWith("ios") || p.startsWith("ipados") || p.startsWith("android");
 };