i18n: translate all Chinese comments, docstrings, and logger messages to English

Comprehensive translation of Chinese text to English across the entire codebase:

- api/: FastAPI server documentation and logger messages
- cache/: Cache abstraction layer comments and docstrings
- database/: Database models and MongoDB store documentation
- media_platform/: All platform crawlers (Bilibili, Douyin, Kuaishou, Tieba, Weibo, Xiaohongshu, Zhihu)
- model/: Data model documentation
- proxy/: Proxy pool and provider documentation
- store/: Data storage layer comments
- tools/: Utility functions and browser automation
- test/: Test file documentation

Preserved: Chinese disclaimer header (lines 10-18) for legal compliance

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tools/time_util.py

@@ -21,7 +21,7 @@
 # -*- coding: utf-8 -*-
 # @Author  : relakkes@gmail.com
 # @Time    : 2023/12/2 12:52
-# @Desc    : 时间相关的工具函数
+# @Desc    : Time utility functions
 
 import time
 from datetime import datetime, timedelta, timezone
@@ -29,7 +29,7 @@ from datetime import datetime, timedelta, timezone
 
 def get_current_timestamp() -> int:
     """
-    获取当前的时间戳(13 位)：1701493264496
+    Get current timestamp (13 digits): 1701493264496
     :return:
     """
     return int(time.time() * 1000)
@@ -37,21 +37,21 @@ def get_current_timestamp() -> int:
 
 def get_current_time() -> str:
     """
-    获取当前的时间：'2023-12-02 13:01:23'
+    Get current time: '2023-12-02 13:01:23'
     :return:
     """
     return time.strftime('%Y-%m-%d %X', time.localtime())
 
 def get_current_time_hour() -> str:
     """
-    获取当前的时间：'2023-12-02-13'
+    Get current time with hour: '2023-12-02-13'
     :return:
     """
     return time.strftime('%Y-%m-%d-%H', time.localtime())
 
 def get_current_date() -> str:
     """
-    获取当前的日期：'2023-12-02'
+    Get current date: '2023-12-02'
     :return:
     """
     return time.strftime('%Y-%m-%d', time.localtime())
@@ -59,7 +59,7 @@ def get_current_date() -> str:
 
 def get_time_str_from_unix_time(unixtime):
     """
-    unix 整数类型时间戳  ==> 字符串日期时间
+    Unix integer timestamp ==> datetime string
     :param unixtime:
     :return:
     """
@@ -70,7 +70,7 @@ def get_time_str_from_unix_time(unixtime):
 
 def get_date_str_from_unix_time(unixtime):
     """
-    unix 整数类型时间戳  ==> 字符串日期
+    Unix integer timestamp ==> date string
     :param unixtime:
     :return:
     """
@@ -81,7 +81,7 @@ def get_date_str_from_unix_time(unixtime):
 
 def get_unix_time_from_time_str(time_str):
     """
-    字符串时间 ==> unix 整数类型时间戳，精确到秒
+    Time string ==> Unix integer timestamp, precise to seconds
     :param time_str:
     :return:
     """
@@ -99,34 +99,34 @@ def get_unix_timestamp():
 
 
 def rfc2822_to_china_datetime(rfc2822_time):
-    # 定义RFC 2822格式
+    # Define RFC 2822 format
     rfc2822_format = "%a %b %d %H:%M:%S %z %Y"
 
-    # 将RFC 2822时间字符串转换为datetime对象
+    # Convert RFC 2822 time string to datetime object
     dt_object = datetime.strptime(rfc2822_time, rfc2822_format)
 
-    # 将datetime对象的时区转换为中国时区
+    # Convert datetime object timezone to China timezone
     dt_object_china = dt_object.astimezone(timezone(timedelta(hours=8)))
     return dt_object_china
 
 
 def rfc2822_to_timestamp(rfc2822_time):
-    # 定义RFC 2822格式
+    # Define RFC 2822 format
     rfc2822_format = "%a %b %d %H:%M:%S %z %Y"
 
-    # 将RFC 2822时间字符串转换为datetime对象
+    # Convert RFC 2822 time string to datetime object
     dt_object = datetime.strptime(rfc2822_time, rfc2822_format)
 
-    # 将datetime对象转换为UTC时间
+    # Convert datetime object to UTC time
     dt_utc = dt_object.replace(tzinfo=timezone.utc)
 
-    # 计算UTC时间对应的Unix时间戳
+    # Calculate Unix timestamp from UTC time
     timestamp = int(dt_utc.timestamp())
 
     return timestamp
 
 
 if __name__ == '__main__':
-    # 示例用法
+    # Example usage
     _rfc2822_time = "Sat Dec 23 17:12:54 +0800 2023"
     print(rfc2822_to_china_datetime(_rfc2822_time))