feat: 添加性能优化和架构文档，更新依赖和核心模块

refactor(browser_manager): 实现页面池机制以提升性能
refactor(image_manager): 添加模板缓存并集成页面池
refactor(bili_parser): 迁移到异步HTTP请求并实现会话复用
docs: 新增性能优化、架构设计和最佳实践文档
chore: 更新requirements.txt添加新依赖

core/managers/image_manager.py

@@ -29,6 +29,8 @@ class ImageManager:
         # core/managers/image_manager.py -> core/managers -> core -> core/data/temp
         self.temp_dir = os.path.join(os.path.dirname(os.path.dirname(__file__)), "data", "temp")
         os.makedirs(self.temp_dir, exist_ok=True)
+        # 模板缓存
+        self._template_cache: Dict[str, Template] = {}
 
     async def render_template(self, template_name: str, data: Dict[str, Any], output_name: str = "output.png", quality: int = 80, image_type: str = "png") -> Optional[str]:
         """
@@ -50,15 +52,20 @@ class ImageManager:
             return None
 
         try:
-            # 1. 渲染 HTML
-            with open(template_path, "r", encoding="utf-8") as f:
-                template_str = f.read()
+            # 1. 渲染 HTML (使用缓存)
+            if template_name in self._template_cache:
+                template = self._template_cache[template_name]
+            else:
+                with open(template_path, "r", encoding="utf-8") as f:
+                    template_str = f.read()
+                template = Template(template_str)
+                self._template_cache[template_name] = template
             
-            template = Template(template_str)
             html_content = template.render(**data)
 
             # 2. 使用浏览器截图
-            page = await browser_manager.get_new_page()
+            # 改为从池中获取页面
+            page = await browser_manager.get_page()
             if not page:
                 logger.error("无法获取浏览器页面")
                 return None
@@ -76,10 +83,11 @@ class ImageManager:
                 if image_type == 'jpeg':
                     screenshot_args['quality'] = quality
                     
-                screenshot_bytes = await page.screenshot(**screenshot_args)
+                screenshot_bytes = await page.screenshot(**screenshot_args)  # type: ignore
                 
             finally:
-                await page.close()
+                # 归还页面到池中，而不是直接关闭
+                await browser_manager.release_page(page)
 
             # 3. 保存文件
             output_path = os.path.join(self.temp_dir, output_name)