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

src/cli/program/config-guard.ts

@@ -52,7 +52,9 @@ export async function ensureConfigReady(params: {
       : [];
 
   const invalid = snapshot.exists && !snapshot.valid;
-  if (!invalid) return;
+  if (!invalid) {
+    return;
+  }
 
   const rich = isRich();
   const muted = (value: string) => colorize(rich, theme.muted, value);