ObsidianDragon - DragonX ImGui Wallet

Full-node GUI wallet for DragonX cryptocurrency.
Built with Dear ImGui, SDL3, and OpenGL3/DX11.

Features:
- Send/receive shielded and transparent transactions
- Autoshield with merged transaction display
- Built-in CPU mining (xmrig)
- Peer management and network monitoring
- Wallet encryption with PIN lock
- QR code generation for receive addresses
- Transaction history with pagination
- Console for direct RPC commands
- Cross-platform (Linux, Windows)

src/util/logger.h

@@ -0,0 +1,65 @@
+// DragonX Wallet - ImGui Edition
+// Copyright 2024-2026 The Hush Developers
+// Released under the GPLv3
+
+#pragma once
+
+#include <string>
+#include <fstream>
+#include <mutex>
+
+namespace dragonx {
+namespace util {
+
+/**
+ * @brief Simple file logger
+ */
+class Logger {
+public:
+    Logger();
+    ~Logger();
+
+    /**
+     * @brief Initialize logger with output file
+     * @param path Path to log file
+     * @return true if opened successfully
+     */
+    bool init(const std::string& path);
+
+    /**
+     * @brief Write a log message
+     * @param message Message to log
+     */
+    void write(const std::string& message);
+
+    /**
+     * @brief Write a formatted log message
+     * @param format printf-style format string
+     */
+    void writef(const char* format, ...);
+
+    /**
+     * @brief Get the singleton instance
+     */
+    static Logger& instance();
+
+private:
+    std::ofstream file_;
+    std::mutex mutex_;
+    bool initialized_ = false;
+};
+
+// Convenience macros
+#define LOG(msg) dragonx::util::Logger::instance().write(msg)
+#define LOGF(...) dragonx::util::Logger::instance().writef(__VA_ARGS__)
+
+#ifdef DRAGONX_DEBUG
+#define DEBUG_LOG(msg) LOG(msg)
+#define DEBUG_LOGF(...) LOGF(__VA_ARGS__)
+#else
+#define DEBUG_LOG(msg)
+#define DEBUG_LOGF(...)
+#endif
+
+} // namespace util
+} // namespace dragonx