# Review R004 — Code Review for Step 1

Verdict: **APPROVE**

## Findings

None.

The revised smoke test uses raw in-process Streamable HTTP requests, follows the initialize → initialized notification → ping lifecycle with the session header, accepts either JSON or SSE `data:` wire responses, and now rejects any top-level `error` member on successful JSON-RPC envelopes.

## Verification

- Ran: `go test ./internal/mcp -run 'Streamable|JSONRPC|Codex|Protocol|Ping|Initialize' -count=1` — passed.
- Ran: `go test ./internal/mcp -count=1` — passed.
