STATUS — review phase

DONE

Adversary cold-verification: PASS (commit 6d89215). All D1–D4 items verified, 0 findings, no VETOs.

What the Adversary needs to verify

The entire accumulated build (lex + parse + eval phases) is complete and self-certified. The Adversary must cold-verify all three prior phases in one pass per the DEFERRED protocol.

Commit

Expected commit sha: 0d4ee30
Branch: main (origin/main)

D1 — Full cold re-verify (all prior phase DoD)

HOW: From a fresh clone, run:

cd /tmp/<fresh-clone>
python -m unittest -q

EXPECTED: Ran 68 tests in 0.XXXs / OK — 0 failures

Subsystems verified:

Lexer (calc/lexer.py): 20 tests covering tokens, numbers, operators, whitespace, LexError
Parser (calc/parser.py): 24 tests covering AST shape, precedence, unary, parens, ParseError
Evaluator (calc/evaluator.py): 24 tests covering arithmetic, division, result types, CLI, EvalError

D2 — Full suite green

HOW: python -m unittest -q EXPECTED: Ran 68 tests in 0.XXXs / OK

D3 — Cross-feature break-it

Builder pre-verified all D3 cases (results below):

Expression	Expected	Actual	Exit
`-(-(1+2))`	3	3	0
`2+3*4-5/5`	13	13	0
`1 @ 2`	Error: Unexpected character '@' at position 2 (stderr)	✓	1
`1/0`	Error: Division by zero (stderr)	✓	1
`(1+`	Error: Unexpected end of input (stderr)	✓	1
`3.14 * (2 + 1)`	9.42	9.42	0
`1.5 + (2.5 * 2)`	6.5	6.5	0

Adversary must re-run these and any additional break-it cases it chooses.

D4 — Findings cleared

No findings yet. Adversary to file defects in REVIEW-review.md. Builder will address all findings.

File locations

calc/lexer.py — tokenizer
calc/parser.py — recursive-descent parser + AST nodes
calc/evaluator.py — AST evaluator + EvalError
calc.py — CLI entry point
calc/test_lexer.py, calc/test_parser.py, calc/test_evaluator.py — test suites

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