增加设备私有配置，每台设备可以配置不同的模型和提示词

增加后台管理功能，可以通过后台调整设备私有配置信息

manager/api/register.py

@@ -0,0 +1,51 @@
+import logging
+from aiohttp import web
+import datetime
+
+logger = logging.getLogger(__name__)
+
+class RegisterHandler:
+    def __init__(self, config):
+        self.config = config
+
+    async def handle_register(self, request):
+        """处理注册请求"""
+        try:
+            data = await request.json()
+            username = data.get('username')
+            password = data.get('password')
+
+            if not username or not password:
+                logger.warning(f"Registration attempt with empty credentials from {request.remote}")
+                return web.json_response({
+                    'success': False, 
+                    'message': '用户名和密码不能为空'
+                })
+
+            users = self.config.get('users', {})
+            if username in users:
+                logger.warning(f"Registration attempt with existing username {username} from {request.remote}")
+                return web.json_response({
+                    'success': False, 
+                    'message': '用户名已存在'
+                })
+
+            # 存储新用户
+            self.config['users'][username] = {
+                'password': self.config['hash_password'](password),
+                'created_at': datetime.datetime.now().isoformat()
+            }
+            self.config['save_user_data']()
+
+            logger.info(f"Successfully registered new user {username} from {request.remote}")
+            return web.json_response({
+                'success': True, 
+                'message': '注册成功'
+            })
+
+        except Exception as e:
+            logger.error(f"Registration error: {str(e)}", exc_info=True)
+            return web.json_response({
+                'success': False, 
+                'message': '注册失败，请稍后重试'
+            })