add Unix Socket API

SocketServer.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <string>
+#include <functional>
+#include <thread>
+#include <atomic>
+#include <memory>
+
+class SocketServer {
+public:
+    using CommandCallback = std::function<std::string(const std::string&)>;
+
+    explicit SocketServer(const std::string& socketPath);
+    ~SocketServer();
+
+    bool start(CommandCallback callback);
+    void stop();
+    bool isRunning() const { return running_; }
+
+private:
+    void serverLoop();
+    void handleClient(int clientFd);
+
+    std::string socketPath_;
+    int serverFd_;
+    std::atomic<bool> running_;
+    std::unique_ptr<std::thread> serverThread_;
+    CommandCallback commandCallback_;
+};