# Code Review — TP-008 Step 3

Result: APPROVE

## Findings

No blocking findings.

The previously noted collision-merge and unknown-key metadata issues are resolved: colliding JSON-decoded sample arrays are preserved as distinct values without mutating the input slice, and `_meta.unknown_stream_keys` now reports the original upstream spellings while the output fields use best-effort snake_case.

## Verification

- Reviewed `git diff 8b5741f1b5a6b2d2b31b613b6e74ab9399bfe2bd..HEAD --name-only`
- Reviewed the full diff for Step 3 changes
- Read changed files and task context, including `PROMPT.md`, `STATUS.md`, `internal/streams/canonicalizer.go`, and `internal/streams/canonicalizer_test.go`
- Ran `go test ./internal/streams` — pass
- Ran `go test ./...` — pass
- Ran `go vet ./...` — pass
- Ran `make lint` — pass
