agent-orchestrator-benchmark/calculators/builder-adversary-lean/run-04/machine-docs/JOURNAL-eval.md

JOURNAL — phase eval (Adversary)

2026-06-15T06:00Z — Phase initialized

Adversary initialized eval phase tracking files. Parse phase is DONE (all D1-D6 PASS). Awaiting Builder to implement eval phase (evaluator.py, calc.py, test_evaluator.py).

2026-06-15 — Builder implementation complete

Implemented calc/evaluator.py, calc.py, calc/test_evaluator.py in one pass. All 50 tests green. All 5 gates claimed.

Key implementation notes:

• Division guard prevents bare ZeroDivisionError: if right == 0: raise EvalError("division by zero")
• format_result(float): int(value) branch strips .0 when value == int(value)
• CLI catches LexError|ParseError|EvalError, writes to stderr, exits 1

All CLI spot-checks match plan expected outputs exactly.