refactor: 大规模调整项目目录结构，将ChatClient和ChatServer整合为Monorepo结构，并分为两个独立文件夹：chatclient/ 和 chatserver/。更新了ChatClient的CMakeLists.txt配置以适配新结构。

ChatClient/include/phoneloginwidget.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <QWidget>
+#include <QGridLayout>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPushButton>
+
+#include "loginwidget.h"
+
+class PhoneLoginWidget : public QWidget
+{
+	Q_OBJECT
+
+public:
+	PhoneLoginWidget(QWidget *parent);
+
+    void sendVerifyCode();
+    void sendVerifyCodeDone(bool ok);
+
+    void clickSubmitBtn();
+    void phoneLoginDone(bool ok, const QString& reason);
+    void phoneRegisterDone(bool ok, const QString& reason);
+
+    void countDown();
+    void switchMode();
+
+private:
+    QLineEdit* phoneEdit;
+    QPushButton* sendVerifyCodeBtn;
+    QLineEdit* verifyCodeEdit;
+    QLabel* titleLabel;
+    QPushButton* submitBtn;
+    QPushButton* switchModeBtn;
+
+    bool isLoginMode = true;
+    QString currentPhone = "";    // 记录是使用哪个手机号发送的验证码
+    QTimer* timer;
+    int leftTime = 30;
+};