Update /ok to serve dual health check/benchmarking role

src/config.hpp

@@ -74,6 +74,15 @@ struct SubscriptionConfig {
   std::chrono::seconds keepalive_interval{30};
 };
 
+/**
+ * @brief Configuration settings for benchmarking and health check behavior.
+ */
+struct BenchmarkConfig {
+  /// CPU-intensive loop iterations for /ok requests in resolve stage
+  /// 0 = health check only, 7000 = default benchmark load (650ns, 1M req/s)
+  int ok_resolve_iterations = 7000;
+};
+
 /**
  * @brief Top-level configuration container for all WeaselDB settings.
  */
@@ -81,6 +90,7 @@ struct Config {
   ServerConfig server; ///< Server networking and request handling settings
   CommitConfig commit; ///< Commit processing and validation settings
   SubscriptionConfig subscription; ///< Subscription streaming settings
+  BenchmarkConfig benchmark;       ///< Benchmarking and health check settings
 };
 
 /**
@@ -152,6 +162,8 @@ private:
   static void parse_commit_config(const auto &toml_data, CommitConfig &config);
   static void parse_subscription_config(const auto &toml_data,
                                         SubscriptionConfig &config);
+  static void parse_benchmark_config(const auto &toml_data,
+                                     BenchmarkConfig &config);
 };
 
 } // namespace weaseldb