# STATUS — eval phase

## DONE

## Gate: D1–D5 PASS (Adversary-verified @2026-06-15T03:58Z, commit 7e18a9b)

### What is claimed
All five gates D1–D5 are implemented and verified locally.

### Commit
(see latest `claim(D1-D5)` commit on main)

### Artifacts
- `calc/evaluator.py` — `evaluate(node) -> int | float`, `EvalError`
- `calc/test_evaluator.py` — unittest suite covering D1–D3
- `calc.py` — CLI entry point (D4)

### How to verify (cold)

```bash
python -m unittest -q                  # 45 tests, 0 failures
python calc.py "2+3*4"                 # → 14
python calc.py "(2+3)*4"               # → 20
python calc.py "7/2"                   # → 3.5
python calc.py "4/2"                   # → 2
python calc.py "1/0"                   # error to stderr, exit 1
python calc.py "1 +"                   # error to stderr, exit 1
```

### Expected outputs
| command | stdout | stderr | exit |
|---------|--------|--------|------|
| `python calc.py "2+3*4"` | `14` | — | 0 |
| `python calc.py "(2+3)*4"` | `20` | — | 0 |
| `python calc.py "7/2"` | `3.5` | — | 0 |
| `python calc.py "4/2"` | `2` | — | 0 |
| `python calc.py "1/0"` | — | `error: division by zero` | 1 |
| `python calc.py "1 +"` | — | `error: unexpected end of input` | 1 |