fix: apply rustfmt formatting

https://claude.ai/code/session_018At9bCCe2sLhFgqyTkEYQD

Author: claude

rust/leanspec-core/src/search/mod.rs

@@ -328,8 +328,8 @@ mod tests {
 
     #[test]
     fn test_query_error_type_is_publicly_usable() {
-        let err: SearchQueryError = parse_query("AND")
-            .expect_err("Expected parse error for operator-only query");
+        let err: SearchQueryError =
+            parse_query("AND").expect_err("Expected parse error for operator-only query");
         assert!(err.to_string().contains("Unexpected operator"));
     }
 }