fix clang-tidy errors

include/xrpl/basics/Logger.h

@@ -94,9 +94,9 @@ defaultJsonLogFormat()
 struct LoggingConfiguration
 {
     bool enableConsole{};
-    std::optional<std::string> directory;
+    std::optional<std::string> directory{std::nullopt};
     bool isAsync{};
-    Severity defaultSeverity;
+    Severity defaultSeverity{Severity::DBG};
     bool jsonMode{false};
 };
 
@@ -223,7 +223,7 @@ class Logger
 
             if (jsonMode_)
             {
-                detail::appendJsonField(messageParams_, p.name(), p.value());
+                detail::appendJsonField(messageParams_, p.name(), std::move(p).value());
             }
 
             return *this;

include/xrpl/basics/StructuredLogging.h

@@ -179,10 +179,17 @@ public:
 
     /** @brief Get the parameter value. */
     [[nodiscard]] T const&
-    value() const
+    value() const&
     {
         return value_;
     }
+
+    /** @brief Get the parameter value. */
+    [[nodiscard]] T&&
+    value() &&
+    {
+        return std::move(value_);
+    }
 };
 
 /**
@@ -231,6 +238,7 @@ template <typename... Ts>
 [[nodiscard]] std::string
 buildJsonPattern(std::string_view existingPattern, log::Parameter<Ts> const&... params)
 {
+    // NOLINTNEXTLINE(misc-const-correctness)
     detail::JsonLoggingPatternBuilder builder(existingPattern);
     (builder.add(params.name(), params.value()), ...);
     return builder.build();