fix(aibox): 补全 common/logger 缺失的 logging 导入并固化 common 包抽取

- common/logger.py 漏导 logging / RotatingFileHandler，导致 main() 在
  Logger.init_file_logging() 处抛 NameError；现已补回（抽取自 aibox.py 时
  未携带该 import）
- 固化 aibox 模块化重构成果：common/ 包（i18n/config/constants/logger
  + __init__ 重导出）已落地，aibox.py 删除内联 I18n 改从 common 导入
- requirements.txt 新增 PySocks 依赖

aibox/common/logger.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+"""
+common.logger - aibox 统一日志系统
+
+抽离自 aibox.py 的 Logger 类。依赖 common.constants（日志文件路径与大小限制）
+与 common.config，不反向依赖 aibox 任何符号，可安全独立导入。
+"""
+
+import os
+import logging
+from logging.handlers import RotatingFileHandler
+from datetime import datetime
+
+from .constants import constants
+from .config import ConfigManager
+# ==================== 日志系统 ====================
+
+class Logger:
+    """统一日志系统 - 支持文件和终端输出"""
+    
+    LEVELS = {
+        "DEBUG": 3,
+        "INFO": 2,
+        "WARNING": 1,
+        "ERROR": 0
+    }
+    
+    _file_handler = None
+    _log_initialized = False
+    
+    @classmethod
+    def init_file_logging(cls, log_file: str = None, max_size: int = None, backup_count: int = None):
+        """初始化文件日志"""
+        if cls._log_initialized:
+            return
+        
+        if log_file is None:
+            log_file = constants.LOG_FILE
+        if max_size is None:
+            max_size = constants.LOG_MAX_SIZE
+        if backup_count is None:
+            backup_count = constants.LOG_BACKUP_COUNT
+        
+        log_dir = os.path.dirname(log_file)
+        if log_dir:
+            os.makedirs(log_dir, exist_ok=True)
+        
+        cls._file_handler = RotatingFileHandler(
+            log_file, 
+            maxBytes=max_size,
+            backupCount=backup_count,
+            encoding='utf-8'
+        )
+        
+        formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+        cls._file_handler.setFormatter(formatter)
+        
+        cls._log_initialized = True
+    
+    def __init__(self, name: str = "System", level: int = None):
+        self.name = name
+        config = ConfigManager()
+        if level is None:
+            level = config.get("system.debug_level", 1)
+        self.level = level
+        
+        self.py_logger = logging.getLogger(f"AI.{name}")
+        self.py_logger.setLevel(logging.DEBUG)
+        
+        if Logger._file_handler and not self.py_logger.handlers:
+            self.py_logger.addHandler(Logger._file_handler)
+    
+    def debug(self, msg: str):
+        if self.level >= 3:
+            self._log("🐛", "DEBUG", msg)
+            self.py_logger.debug(msg)
+    
+    def info(self, msg: str):
+        if self.level >= 2:
+            self._log("📋", "INFO", msg)
+            self.py_logger.info(msg)
+    
+    def warning(self, msg: str):
+        if self.level >= 1:
+            self._log("⚠️", "WARNING", msg)
+            self.py_logger.warning(msg)
+    
+    def error(self, msg: str):
+        if self.level >= 0:
+            self._log("❌", "ERROR", msg)
+            self.py_logger.error(msg)
+    
+    def _log(self, emoji: str, level: str, msg: str):
+        """输出到终端"""
+        timestamp = datetime.now().strftime("%H:%M:%S")
+        print(f"{emoji} [{timestamp}] [{self.name}] {msg}", flush=True)
+