# Complete - m-openai-compatible-raw-tunnel-sideband-passthrough/03+02_response_modes_semantics

## 완료 일시

2026-07-08

## 요약

OpenAI-compatible Chat Completions response mode semantics를 구현한 1회차 루프가 PASS로 종료되었다.

## 루프 이력

| Plan | Review | Verdict | 메모 |
|------|--------|---------|------|
| `plan_cloud_G06_0.log` | `code_review_cloud_G06_0.log` | PASS | `passthrough`, `passthrough+sideband`, `transformed` routing/output semantics와 SDD S05-S07/S11 evidence가 충족되었다. |

## 구현/정리 내용

- `metadata.iop_response_mode` parser와 공식 mode routing guard를 추가하고 unknown mode fail-fast를 검증했다.
- explicit `passthrough+sideband` provider tunnel path를 추가해 streaming SSE sideband event와 non-streaming IOP envelope를 제공했다.
- pure `passthrough` byte identity와 sideband/label 부재를 유지했다.
- explicit `transformed` normalized output에 `X-IOP-Response-Mode: transformed` 라벨과 run metadata를 남겼다.
- handler/service/transport/openai 및 Edge package 테스트로 response mode semantics와 기존 Edge quick check를 검증했다.

## 최종 검증

- `go test -count=1 ./apps/edge/internal/service ./apps/edge/internal/transport ./apps/edge/internal/openai` - PASS; `service`, `transport`, `openai` 패키지가 모두 `ok`로 완료되었다.
- `git diff --check` - PASS; 출력 없음.
- `go test -count=1 ./apps/edge/...` - PASS; `apps/edge` 하위 전체 Go package가 모두 `ok`로 완료되었다.

## Roadmap Completion

- Milestone: `agent-roadmap/phase/routing-policy-model-orchestration/milestones/openai-compatible-raw-tunnel-sideband-passthrough.md`
- Milestone link: [Milestone 문서](agent-roadmap/phase/routing-policy-model-orchestration/milestones/openai-compatible-raw-tunnel-sideband-passthrough.md)
- Completed task ids:
  - `mode-contract`: PASS; evidence=`plan_cloud_G06_0.log`, `code_review_cloud_G06_0.log`; verification=`go test -count=1 ./apps/edge/internal/openai -run 'TestChatCompletionsResponseModeRouting|TestChatCompletionsProviderPoolDispatch|TestChatCompletionsExplicitNonPassthroughModeKeepsNormalizedPath'`
  - `sideband-overlay`: PASS; evidence=`plan_cloud_G06_0.log`, `code_review_cloud_G06_0.log`; verification=`go test -count=1 ./apps/edge/internal/openai -run 'TestChatCompletionsPassthroughSideband|TestChatCompletionsPassthroughDoesNotExposeSideband|TestChatCompletionsResponseModeRouting|TestChatCompletionsPassthroughStreamingByteIdentity|TestChatCompletionsPassthroughNonStreamingByteIdentity'`
  - `transform-output`: PASS; evidence=`plan_cloud_G06_0.log`, `code_review_cloud_G06_0.log`; verification=`go test -count=1 ./apps/edge/internal/openai -run 'TestChatCompletionsTransformedModeLabelsIOPOutput|TestChatCompletionsPassthroughDoesNotLabelTransformed|TestChatCompletionsExplicitNonPassthroughModeKeepsNormalizedPath|TestChatCompletionsPassthroughNonStreamingByteIdentity|TestChatCompletionsPassthroughStreamingByteIdentity'`
- Not completed task ids: 없음

## 잔여 Nit

- 없음

## 후속 작업

- 없음
