// ExperimentManifest — everything needed to reproduce a run: host, toolchain, library version, plan, seeds, inputs.
#pragma once
#include <string>
#include <vector>
#include <map>
#include <nlohmann/json.hpp>
#include "raid/core/types.hpp"
#include "raid/core/plan.hpp"

namespace raid {

struct ExperimentManifest {
  std::string experiment;             // e.g. "E1.batched_rv"
  std::string created_at_utc;
  std::string raid_version;
  std::string git_commit;
  nlohmann::json host;                // from host_info()
  nlohmann::json plan;                // ExecutionPlan::to_json
  u64 seed{0};
  std::map<std::string, std::string> inputs;       // name → sha256
  std::map<std::string, std::string> parameters;
  std::vector<nlohmann::json> records;             // raw benchmark / result records
  nlohmann::json to_json() const;
  void save(const std::string& path) const;
};

/// Host information gathered at run time (no secrets): chip, cores, memory, OS, compiler, load, thermal state, power.
nlohmann::json host_info();
std::string now_utc_iso();
/// Peak resident set size in bytes (ru_maxrss), for memory metrics.
u64 peak_rss_bytes();

}  // namespace raid