Mark map info calculation nodiscard

src/main/cpp/net/eagle0/shardok/MapInfoCalculator.hpp

@@ -18,7 +18,7 @@ struct alignas(64) OneMapInfo {
     std::map<int, int> positionsRequiringCrossing;
 };
 
-auto CalculateMap(
+[[nodiscard]] auto CalculateMap(
         const std::string& mapName,
         const std::shared_ptr<shardok::ActionPointDistancesCache>& apdCache,
         const shardok::BattalionTypeSPtr& battalionType) -> OneMapInfo;

src/main/cpp/net/eagle0/shardok/server/TokenAuthInterceptor.hpp

@@ -94,7 +94,7 @@ private:
  * Read auth token from a file, stripping whitespace.
  * Returns empty string if file doesn't exist or is empty.
  */
-[[nodiscard]] inline auto ReadAuthTokenFromFile(const std::string& filePath) -> std::string {
+inline auto ReadAuthTokenFromFile(const std::string& filePath) -> std::string {
     if (filePath.empty()) { return ""; }
 
     std::ifstream file(filePath);