增加通过认证码绑定设备和管理账户的功能，需要开启私有设备配置

增加登录用户鉴权

core/utils/auth_code_gen.py

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+import random
+import threading
+import time
+from typing import Set
+
+class AuthCodeGenerator:
+    _instance = None
+    _instance_lock = threading.Lock()
+    
+    def __new__(cls):
+        if not cls._instance:
+            with cls._instance_lock:
+                if not cls._instance:
+                    cls._instance = super(AuthCodeGenerator, cls).__new__(cls)
+                    # 初始化随机种子
+                    random.seed(time.time())
+        return cls._instance
+
+    def __init__(self):
+        # 确保 __init__ 只被调用一次
+        if not hasattr(self, '_initialized'):
+            self._used_codes: Set[str] = set()
+            self._code_timestamps = {}
+            self._lock = threading.Lock()
+            self._code_timeout = 3 * 24 * 60 * 60
+            self._initialized = True
+    
+    @classmethod
+    def get_instance(cls):
+        """获取AuthCodeGenerator的单例实例"""
+        return cls()
+
+    def generate_code(self) -> str:
+        """
+        生成6位数字认证码，确保不重复
+        返回: 6位数字字符串
+        """
+        with self._lock:
+            self._clean_expired_codes()  # 清理过期code
+            while True:
+                # 使用时间戳和已用码数量作为种子，确保每次生成不同的随机数
+                seed = int(time.time() * 1000) + len(self._used_codes)
+                random.seed(seed)
+                
+                # 生成6位随机数字
+                code = ''.join(str(random.randint(0, 9)) for _ in range(6))
+                
+                # 检查是否已存在
+                if code not in self._used_codes:
+                    self._used_codes.add(code)
+                    self._code_timestamps[code] = time.time()
+                    return code
+    
+    def remove_code(self, code: str) -> bool:
+        """
+        删除已使用的认证码
+        参数:
+            code: 要删除的认证码
+        返回:
+            bool: 删除成功返回True，码不存在返回False
+        """
+        print('remove_code', code)
+        with self._lock:
+            if code in self._used_codes:
+                self._used_codes.remove(code)
+                if code in self._code_timestamps:
+                    del self._code_timestamps[code]
+                return True
+            return False
+    
+    def is_code_used(self, code: str) -> bool:
+        """
+        检查认证码是否已被使用
+        参数:
+            code: 要检查的认证码
+        返回:
+            bool: 如果码存在返回True，否则返回False
+        """
+        with self._lock:
+            return code in self._used_codes
+    
+    def clear_codes(self):
+        """清空所有已使用的认证码"""
+        with self._lock:
+            self._used_codes.clear()
+            self._code_timestamps.clear()
+    
+    def _clean_expired_codes(self):
+        """清理过期的认证码"""
+        current_time = time.time()
+        expired_codes = [
+            code for code, timestamp in self._code_timestamps.items()
+            if (current_time - timestamp) > self._code_timeout
+        ]
+        for code in expired_codes:
+            self._used_codes.remove(code)
+            del self._code_timestamps[code]