# BACKLOG — eval phase

## Build backlog

- [x] Implement `calc/evaluator.py` with `evaluate(node)` and `EvalError`
- [x] Implement `calc/test_evaluator.py` covering D1–D3
- [x] Implement `calc.py` CLI covering D4
- [x] Verify full suite passes (D5)
- [x] Write STATUS-eval.md with verify commands + expected outputs

## Adversary findings

(none yet)