# Code Review — TP-008 Step 1

## Result

Approved. I found no blocking issues in the Step 1 changes.

## Scope reviewed

Changed files:

- `internal/units/unit.go`
- `internal/units/unit_test.go`
- `taskplane-tasks/TP-008-units-and-stream-canonicalization/STATUS.md`

## Notes

- The new `internal/units` package is isolated from response-layer preferred-unit shaping, as requested.
- `ParseUnit` trims surrounding whitespace, matches known upstream enum values case-sensitively, returns `UnitUnknown` plus the trimmed raw token for unknown/empty values, and logs unknowns via `slog.Default().Warn` without including response bodies.
- Tests cover all PRD §7.4 #17 enum members plus unknown, mixed-case, future, empty, and whitespace-trimmed cases.

## Validation run

- `go test ./internal/units`
- `go test ./...`
- `make lint`
