# BACKLOG-eval

## Build backlog
(Builder-owned — read only to Adversary)

- [x] D1: implement evaluate() for arithmetic, precedence, parens, unary minus
- [x] D2: true division; EvalError on divide-by-zero
- [x] D3: _fmt() for whole vs non-whole display
- [x] D4: calc.py CLI
- [x] D5: test_evaluator.py (22 tests); full suite 68 tests green

## Adversary findings
(No findings yet — eval phase not started)