feat: 新增个人中心页面，展示用户信息并提供密码修改和退出登录功能。

src/pages/Profile/Profile.tsx

@@ -55,7 +55,7 @@ export default function Profile() {
 
     try {
       await authService.updatePassword(
-        passwordForm.oldPassword,
+        user!.has_password ? passwordForm.oldPassword : '',
         passwordForm.newPassword
       );
       setPasswordSuccess(true);
@@ -150,15 +150,15 @@ export default function Profile() {
                 <span className="stat-value">#{user.id}</span>
               </div>
             </div>
-            
+
             <div className="profile-stat-card">
-               <div className="stat-icon-wrapper orange">
+              <div className="stat-icon-wrapper orange">
                 <Icon icon="solar:lock-keyhole-bold-duotone" width="24" />
-               </div>
-               <div className="stat-content">
-                 <span className="stat-label">安全设置</span>
-                 <span className="stat-value">已保护</span>
-               </div>
+              </div>
+              <div className="stat-content">
+                <span className="stat-label">安全设置</span>
+                <span className="stat-value">已保护</span>
+              </div>
             </div>
           </div>
 
@@ -169,7 +169,7 @@ export default function Profile() {
               onClick={() => setShowPasswordModal(true)}
             >
               <Icon icon="solar:lock-password-bold-duotone" width="20" />
-              <span className="btn-text">修改密码</span>
+              <span className="btn-text">{user.has_password ? '修改密码' : '设置密码'}</span>
               <Icon icon="solar:arrow-right-linear" width="18" className="btn-arrow" />
             </button>
 
@@ -188,7 +188,7 @@ export default function Profile() {
         <div className="modal-overlay" onClick={() => setShowPasswordModal(false)}>
           <div className="modal-content" onClick={(e) => e.stopPropagation()}>
             <div className="modal-header">
-              <h3 className="modal-title">修改密码</h3>
+              <h3 className="modal-title">{user.has_password ? '修改密码' : '设置登录密码'}</h3>
               <button
                 className="modal-close"
                 onClick={() => setShowPasswordModal(false)}
@@ -208,25 +208,27 @@ export default function Profile() {
               {passwordSuccess && (
                 <div className="password-success">
                   <Icon icon="solar:check-circle-bold-duotone" width="18" />
-                  密码修改成功
+                  {user.has_password ? '密码修改成功' : '密码设置成功'}
+                </div>
+              )}
+
+              {user.has_password && (
+                <div className="password-field">
+                  <label className="password-label">当前密码</label>
+                  <input
+                    type="password"
+                    className="password-input"
+                    value={passwordForm.oldPassword}
+                    onChange={(e) =>
+                      setPasswordForm({ ...passwordForm, oldPassword: e.target.value })
+                    }
+                    required
+                  />
                 </div>
               )}
 
               <div className="password-field">
-                <label className="password-label">当前密码</label>
-                <input
-                  type="password"
-                  className="password-input"
-                  value={passwordForm.oldPassword}
-                  onChange={(e) =>
-                    setPasswordForm({ ...passwordForm, oldPassword: e.target.value })
-                  }
-                  required
-                />
-              </div>
-
-              <div className="password-field">
-                <label className="password-label">新密码</label>
+                <label className="password-label">{user.has_password ? '新密码' : '设置密码'}</label>
                 <input
                   type="password"
                   className="password-input"
@@ -263,7 +265,7 @@ export default function Profile() {
                   取消
                 </button>
                 <button type="submit" className="password-btn password-btn--primary">
-                  确认修改
+                  {user.has_password ? '确认修改' : '确认设置'}
                 </button>
               </div>
             </form>