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>

media_platform/kuaishou/core.py

@@ -58,7 +58,7 @@ class KuaishouCrawler(AbstractCrawler):
         self.index_url = "https://www.kuaishou.com"
         self.user_agent = utils.get_user_agent()
         self.cdp_manager = None
-        self.ip_proxy_pool = None  # 代理IP池，用于代理自动刷新
+        self.ip_proxy_pool = None  # Proxy IP pool, used for automatic proxy refresh
 
     async def start(self):
         playwright_proxy_format, httpx_proxy_format = None, None
@@ -72,9 +72,9 @@ class KuaishouCrawler(AbstractCrawler):
             )
 
         async with async_playwright() as playwright:
-            # 根据配置选择启动模式
+            # Select startup mode based on configuration
             if config.ENABLE_CDP_MODE:
-                utils.logger.info("[KuaishouCrawler] 使用CDP模式启动浏览器")
+                utils.logger.info("[KuaishouCrawler] Launching browser using CDP mode")
                 self.browser_context = await self.launch_browser_with_cdp(
                     playwright,
                     playwright_proxy_format,
@@ -82,7 +82,7 @@ class KuaishouCrawler(AbstractCrawler):
                     headless=config.CDP_HEADLESS,
                 )
             else:
-                utils.logger.info("[KuaishouCrawler] 使用标准模式启动浏览器")
+                utils.logger.info("[KuaishouCrawler] Launching browser using standard mode")
                 # Launch a browser context.
                 chromium = playwright.chromium
                 self.browser_context = await self.launch_browser(
@@ -318,7 +318,7 @@ class KuaishouCrawler(AbstractCrawler):
             },
             playwright_page=self.context_page,
             cookie_dict=cookie_dict,
-            proxy_ip_pool=self.ip_proxy_pool,  # 传递代理池用于自动刷新
+            proxy_ip_pool=self.ip_proxy_pool,  # Pass proxy pool for automatic refresh
         )
         return ks_client_obj
 
@@ -344,7 +344,7 @@ class KuaishouCrawler(AbstractCrawler):
                 proxy=playwright_proxy,  # type: ignore
                 viewport={"width": 1920, "height": 1080},
                 user_agent=user_agent,
-                channel="chrome",  # 使用系统的Chrome稳定版
+                channel="chrome",  # Use system's stable Chrome version
             )
             return browser_context
         else:
@@ -362,7 +362,7 @@ class KuaishouCrawler(AbstractCrawler):
         headless: bool = True,
     ) -> BrowserContext:
         """
-        使用CDP模式启动浏览器
+        Launch browser using CDP mode
         """
         try:
             self.cdp_manager = CDPBrowserManager()
@@ -373,17 +373,17 @@ class KuaishouCrawler(AbstractCrawler):
                 headless=headless,
             )
 
-            # 显示浏览器信息
+            # Display browser information
             browser_info = await self.cdp_manager.get_browser_info()
-            utils.logger.info(f"[KuaishouCrawler] CDP浏览器信息: {browser_info}")
+            utils.logger.info(f"[KuaishouCrawler] CDP browser info: {browser_info}")
 
             return browser_context
 
         except Exception as e:
             utils.logger.error(
-                f"[KuaishouCrawler] CDP模式启动失败，回退到标准模式: {e}"
+                f"[KuaishouCrawler] CDP mode launch failed, fallback to standard mode: {e}"
             )
-            # 回退到标准模式
+            # Fallback to standard mode
             chromium = playwright.chromium
             return await self.launch_browser(
                 chromium, playwright_proxy, user_agent, headless
@@ -438,7 +438,7 @@ class KuaishouCrawler(AbstractCrawler):
 
     async def close(self):
         """Close browser context"""
-        # 如果使用CDP模式，需要特殊处理
+        # If using CDP mode, need special handling
         if self.cdp_manager:
             await self.cdp_manager.cleanup()
             self.cdp_manager = None