# Code Review — TP-077 Step 3

Verdict: **approve**

## Findings

No blocking findings.

The implementation matches the approved Step 3 scope:

- `create_workout` now trims and requires a non-empty `folder_id` before any tool call proceeds.
- The intervals create path now rejects missing/blank `FolderID` locally and sends `folder_id` in the POST body while preserving the accepted upstream `type` key for sport.
- Update/sparse workout behavior remains unchanged, including explicit empty `folder_id` on update.
- Public validation text, schema `required`, `folder_id` description, and examples now reflect the required existing-folder contract.

## Validation

Ran:

```sh
go test ./internal/tools ./internal/intervals -run 'CreateWorkout|CreateLibraryWorkout'
```

Result: passed.
