feat: output_format 支持多选，报告可同时发送多种格式

- ConfigManager: get_output_format 改为返回 list，向后兼容旧 string 值
- set_output_format 接受逗号分隔的格式列表
- Dispatcher: dispatch() 循环所有选中格式逐一分发
- manual (/群分析): 使用列表中的第一种格式
- 命令 /设置格式: 支持 image,html 等逗号分隔多选
- 配置面板 output_format 改为 list 类型 (可多选)

src/infrastructure/config/config_manager.py

@@ -146,9 +146,10 @@ class ConfigManager:
         """
         return self.is_auto_analysis_enabled()
 
-    def get_output_format(self) -> str:
+    def get_output_format(self) -> list[str]:
         """获取输出格式"""
-        return self._get_group("basic").get("output_format", "image")
+        val = self._get_group("basic").get("output_format", ["image"])
+        return val if isinstance(val, list) else [val]
 
     def get_qq_official_t2i_summary_dashboard_enabled(self) -> bool:
         """是否启用 QQ 官方 T2I 概览图。"""
@@ -494,15 +495,15 @@ class ConfigManager:
         prompts["golden_quote_analysis_prompts"]["golden_quote_v2_prompt"] = prompt
         self.config.save_config()
 
-    def set_output_format(self, format_type: str):
+    def set_output_format(self, format_types: str | list[str]):
         """设置输出格式"""
-        valid_formats = ["image", "text", "html"]
-        if format_type.lower() not in valid_formats:
-            raise ValueError(
-                f"无效的输出格式: {format_type}。有效选项: {valid_formats}"
-            )
+        if isinstance(format_types, str):
+            format_types = [f.strip() for f in format_types.replace("，", ",").split(",")]
+        for f in format_types:
+            if f not in ("image", "text", "html"):
+                raise ValueError(f"无效格式: {f}。有效: image, text, html")
 
-        self._ensure_group("basic")["output_format"] = format_type.lower()
+        self._ensure_group("basic")["output_format"] = format_types
         self.config.save_config()
 
     def set_group_list_mode(self, mode: str):

src/infrastructure/reporting/dispatcher.py

@@ -45,24 +45,23 @@ class ReportDispatcher:
         分发分析报告
         """
         trace_id = TraceContext.get()
-        output_format = self.config_manager.get_output_format()
+        output_formats = self.config_manager.get_output_format()
 
         logger.info(
-            f"[{trace_id}] 正在分发群 {group_id} 的报告 (格式: {output_format})"
+            f"[{trace_id}] 正在分发群 {group_id} 的报告 (格式: {', '.join(output_formats)})"
         )
 
-        success = False
-        if output_format == "image":
-            success = await self._dispatch_image(group_id, analysis_result, platform_id)
-        elif output_format == "html":
-            success = await self._dispatch_html(group_id, analysis_result, platform_id)
-        else:
-            success = await self._dispatch_text(group_id, analysis_result, platform_id)
+        dispatch_map = {
+            "image": self._dispatch_image,
+            "html": self._dispatch_html,
+            "text": self._dispatch_text,
+        }
+        for fmt in output_formats:
+            handler = dispatch_map.get(fmt)
+            if handler:
+                await handler(group_id, analysis_result, platform_id)
 
-        if success:
-            logger.info(f"[{trace_id}] 群 {group_id} 的报告分发成功")
-        else:
-            logger.warning(f"[{trace_id}] 群 {group_id} 的报告分发失败")
+        logger.info(f"[{trace_id}] 群 {group_id} 的报告分发完成")
 
     async def _dispatch_image(
         self, group_id: str, analysis_result: dict[str, Any], platform_id: str | None