feat(cross-platform): 添加跨平台功能支持及配置优化

- 新增跨平台配置模型和全局配置支持
- 优化 Discord 适配器的连接管理和错误处理
- 添加 watchdog 和 discord.py 依赖
- 创建 DeepSeek API 配置文档
- 移除重复的同步帮助图片代码
- 改进跨平台插件配置加载逻辑

adapters/discord_adapter.py

@@ -96,7 +96,7 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
             return
             
         try:
-            channel_name = "neobot_discord_send"
+            channel_name = "neobot_cross_platform"
             pubsub = redis_manager.redis.pubsub()
             await pubsub.subscribe(channel_name)
             
@@ -319,23 +319,64 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
             except asyncio.CancelledError:
                 self.logger.info("连接被取消")
                 break
+            except discord.ConnectionClosed as e:
+                retry_count += 1
+                self.logger.warning(f"Discord 连接关闭: code={e.code}, reason={e.reason}")
+                
+                # 如果是正常关闭，不计入重连次数
+                if e.code == 1000:
+                    self.logger.info("连接正常关闭，等待重新连接...")
+                    continue
+                    
+                if max_retries != -1 and retry_count >= max_retries:
+                    self.logger.error(f"已达到最大重连次数 ({max_retries})，停止重连")
+                    break
+                    
+                self.logger.info(f"将在 {retry_delay} 秒后重连 ({retry_count}/{max_retries if max_retries != -1 else '无限'})...")
+                await self._cleanup_connection()
+                await asyncio.sleep(retry_delay)
             except Exception as e:
                 retry_count += 1
-                self.logger.error(f"Discord 连接失败: {e}")
+                self.logger.error(f"Discord 连接异常: {e}")
                 
                 if max_retries != -1 and retry_count >= max_retries:
                     self.logger.error(f"已达到最大重连次数 ({max_retries})，停止重连")
                     break
                     
                 self.logger.info(f"将在 {retry_delay} 秒后重连 ({retry_count}/{max_retries if max_retries != -1 else '无限'})...")
-                # 清理旧的连接状态
-                if hasattr(self, 'http') and self.http:
-                    await self.http.close()
-                self.clear()
+                await self._cleanup_connection()
                 await asyncio.sleep(retry_delay)
         
         self.logger.info("Discord 客户端已停止")
 
+    async def _cleanup_connection(self):
+        """
+        清理旧的连接状态
+        """
+        try:
+            # 停止心跳任务
+            if hasattr(self, 'heartbeat_task') and not self.heartbeat_task.done():
+                self.heartbeat_task.cancel()
+                try:
+                    await self.heartbeat_task
+                except asyncio.CancelledError:
+                    pass
+        except Exception as e:
+            self.logger.error(f"清理心跳任务时出错: {e}")
+        
+        try:
+            # 清理 HTTP 连接
+            if hasattr(self, 'http') and self.http:
+                await self.http.close()
+        except Exception as e:
+            self.logger.error(f"清理 HTTP 连接时出错: {e}")
+        
+        try:
+            # 清理客户端状态
+            self.clear()
+        except Exception as e:
+            self.logger.error(f"清理客户端状态时出错: {e}")
+
     async def start_heartbeat(self, interval: int = 30):
         """
         启动心跳机制，定期检查连接状态