# Plan Review — Step 3

Verdict: **APPROVE**

The updated Step 3 notes now address the gaps from R009. The plan names the concrete test areas (`get_activity_details_test.go` and `get_wellness_data_test.go`), defines the hydration fixture/inline-row scenario with both `hydration` and `hydrationVolume`, chooses additive row-level `_meta.field_semantics` rather than renaming public fields, includes terse/full assertions, and specifies a targeted `go test ./internal/tools -run 'TestGetActivityDetails|TestGetWellnessData'` verification command.

Implementation notes to keep in mind:

- For calories, make the distinction bidirectional: activity rows should not expose wellness intake keys (`calories_intake` / `kcal_consumed`), and wellness rows should continue to expose intake as `calories_intake` without reintroducing ambiguous raw nutrition keys at top level.
- For hydration, avoid inventing units for `hydrationVolume` unless the upstream contract is confirmed. A `field_semantics` label that explains the difference while preserving both public fields is the safest additive change.
- If any tool description/schema/catalog text is changed to mention hydration semantics, remember the generated catalog/docs implications; if only response metadata/tests change, Step 4 changelog/discovery logging should be sufficient.

Proceed with implementation.
