feat: get user stats in the group

Signed-off-by: Keming <kemingy94@gmail.com>

handlers/summary/__init__.py

@@ -94,6 +94,23 @@ def stats_command(message: Message, bot: TeleBot):
     )
 
 
+@non_llm_handler
+def user_stats_command(message: Message, bot: TeleBot):
+    """看看谁才是最能摸鱼的"""
+    user_stats = store.get_user_stats(message.chat.id)
+    if not user_stats:
+        bot.reply_to(message, "没有找到任何用户统计信息。")
+        return
+    user_stats_text = "\n".join(
+        f"{entry.user_name}: {entry.message_count}" for entry in user_stats
+    )
+    bot.reply_to(
+        message,
+        f"👤 用户消息统计信息:\n```\n{user_stats_text}\n```",
+        parse_mode="MarkdownV2",
+    )
+
+
 @non_llm_handler
 def search_command(message: Message, bot: TeleBot):
     """搜索群组消息（示例：/search 关键词 [N]）"""
@@ -134,6 +151,9 @@ if settings.openai_api_key:
             summary_command, commands=["summary"], pass_bot=True
         )
         bot.register_message_handler(stats_command, commands=["stats"], pass_bot=True)
+        bot.register_message_handler(
+            user_stats_command, commands=["userstats"], pass_bot=True
+        )
         bot.register_message_handler(search_command, commands=["search"], pass_bot=True)
         bot.register_message_handler(
             handle_message, func=partial(filter_message, bot=bot)