# Code Review: TP-082 Step 4 — Verify full write cluster

## Verdict: APPROVE

No blocking issues found in the Step 4 diff. The only production-facing change in this step is the `CHANGELOG.md` entry, and it accurately summarizes the write-response null-stripping behavior without overstating request/API surface changes.

## Verification performed

I reran the required gates from the review request/work plan:

```sh
go test ./internal/tools -run 'Test(AddOrUpdateEvent|LinkActivityToEvent|AddActivityMessage|UpdateWellness|UpdateSportSettings|ApplyTrainingPlan|CreateWorkout|UpdateWorkout|CreateCustomItem|UpdateCustomItem)'
make test
make build
make lint
```

All passed:

- targeted write-tool cluster: `ok github.com/ricardocabral/icuvisor/internal/tools` (cached)
- `make test`: passed
- `make build`: passed
- `make lint`: `0 issues`

## Notes

- `STATUS.md` has Step 4 checkboxes completed and the changelog was updated under `[Unreleased]` as required.
- There were no code changes in this step relative to `9405e39`; implementation review remains covered by the prior Step 3 reviews.
