feat: 添加测试框架及功能测试用例

test: 实现BDD测试框架及功能测试
docs: 添加测试配置文件及文档
refactor: 重构命令处理逻辑以支持测试

bot/commands.py

@@ -161,6 +161,28 @@ async def _cmd_status(user_id: str) -> str:
 
 async def _cmd_close(user_id: str, args: str) -> str:
     """Close a session."""
+    # If a specific conv_id is given by name (not a number), resolve it directly.
+    if args:
+        try:
+            int(args)
+            by_number = True
+        except ValueError:
+            by_number = False
+
+        if not by_number:
+            # Explicit conv_id given — look it up directly (may belong to another user).
+            conv_id = args.strip()
+            try:
+                success = await manager.close(conv_id, user_id=user_id)
+                if success:
+                    if agent.get_active_conv(user_id) == conv_id:
+                        agent._active_conv[user_id] = None
+                    return f"✓ Closed session `{conv_id}`"
+                else:
+                    return f"Session `{conv_id}` not found."
+            except PermissionError as e:
+                return str(e)
+
     sessions = manager.list_sessions(user_id=user_id)
     if not sessions:
         return "No sessions to close."