# Code Review — TP-070 Step 2

Verdict: APPROVE

No blocking findings.

## Review notes

- The extraction is narrow and keeps the public `update_sport_settings` behavior intact: decode/validation still happens before the gate, omitted zones still bypass the delete gate, and valid zone overwrites are still rejected in safe mode with the existing public gate message.
- The moved zone helpers preserve the prior normalization, validation, and defensive slice-copy behavior for write params and response echoes.
- The tests were mirrored into `update_sport_settings_zones_test.go` without weakening the key safety coverage for omitted zones, safe-mode rejection before write, and full-mode zone writes/metadata.
- No model-controlled confirmation/override was introduced, and no safety gate semantics or environment variable names changed.

## Verification run

- `git diff 70b6f0dd84c832274bdc3b2d3a9e38182c44a091..HEAD --name-only`
- `git diff 70b6f0dd84c832274bdc3b2d3a9e38182c44a091..HEAD`
- `go test ./internal/tools -run 'TestUpdateSportSettings'`
- `go test ./...`
