# R012 Code Review - Step 4

Verdict: APPROVE

No blocking findings.

Notes:
- Added past-only regression coverage for `get_events` and `get_wellness_data`, including absence of `as_of`, `as_of_date`, and `as_of_weekday` while preserving existing metadata/null-stripping behavior.
- `CHANGELOG.md` documents the additive as-of metadata behavior under `[Unreleased]`.

Verification:
- `go test ./internal/response ./internal/tools -run 'TestAsOfMetadataInTimezone|TestCurrentDayAsOfMetadataRangePredicate|TestGetActivities.*AsOf|TestGetEvents.*AsOf|TestGetWellnessData.*AsOf'`
