refactor: 更新路由和 OpenAPI 注册以接入 AssetWallet

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

pkg/openapi/handlers.go

@@ -53,5 +53,6 @@ func BuildDocHandlers() *bootstrap.Handlers {
 		PollingCleanup:              admin.NewPollingCleanupHandler(nil),
 		PollingManualTrigger:        admin.NewPollingManualTriggerHandler(nil),
 		Asset:                       admin.NewAssetHandler(nil, nil, nil),
+		AssetWallet:                 admin.NewAssetWalletHandler(nil),
 	}
 }