[feat][backend] observability openapi upgrade (#149)

* SearchTraceOApiResp add TraceAdvanceInfo

* feat(backend): observability view use master

* Add span processor when export trace.

Change-Id: I6a5ae0ea1723d1c4b614e1f3c22db6ae42309773

* fix: [Coda] 修复trace_export_service_test中buildHelper字段缺失问题
(LogID: 20250902120500010091115089615C794)

Co-Authored-By: Coda <[email protected]>

* Fix export get span bug.

* add metrics

* SearchTraceOApiResp add TraceAdvanceInfo

* Add span processor when export trace.

Change-Id: I6a5ae0ea1723d1c4b614e1f3c22db6ae42309773

* fix: [Coda] 修复trace_export_service_test中buildHelper字段缺失问题
(LogID: 20250902120500010091115089615C794)

Co-Authored-By: Coda <[email protected]>

* Fix export get span bug.

Change-Id: Ie9cedff80a6de108816501d56ff67d4254fe565a

* add ListTracesOApi

* add metrics

* feat(backend): change model span filter

* add metrics

* Add spaninfo in dataset item.

Change-Id: Id124ca41343eba4ca5032fbbb6787bd7830ff500

* fix: [Coda] fix openapi_test.go unit tests with missing metrics param and typo
(LogID: 20250903162640010091104200669B723)

Co-Authored-By: Coda <[email protected]>

* feat(backend): refactor & fix

* Fix ut.g

Change-Id: I6d23844a71f141abf4a05dc7d46b01ab03b23715

* fix ci

* fix UT

* fix: [Coda] 修复ListTracesOApi空指针panic并补充metrics.go单元测试

Co-Authored-By: Coda <[email protected]>

* fix UT

---------

Co-authored-by: lizhanpeng <[email protected]>
Co-authored-by: taoyifan <[email protected]>
Co-authored-by: Coda <[email protected]>

Author: 4 people

backend/api/handler/coze/loop/apis/observability_open_apiservice.go

@@ -0,0 +1,4 @@
+package trace
+
+// KitexUnusedProtection is used to prevent 'imported and not used' error.
+var KitexUnusedProtection = struct{}{}