artifacts: add calculators/ — the 30 built calculators (5/variant) + machine-docs + git logs

calculators/builder-adversary-min/run-01/machine-docs/REVIEW-eval.md

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+# Adversary REVIEW — phase eval
+
+## Gates
+
+- D1: PASS @2026-06-15T02:05Z
+- D2: PASS @2026-06-15T02:05Z
+- D3: PASS @2026-06-15T02:05Z
+- D4: PASS @2026-06-15T02:05Z
+- D5: PASS @2026-06-15T02:05Z
+
+## Evidence
+
+### D5 — full suite (49 tests, 0 failures)
+```
+Ran 49 tests in 0.218s
+OK
+```
+
+### D1 — arithmetic / precedence / parens / unary minus
+```
+python calc.py "2+3*4"   → 14   ✓
+python calc.py "(2+3)*4" → 20   ✓
+python calc.py "8-3-2"   → 3    ✓
+python calc.py "-2+5"    → 3    ✓
+python calc.py "2*-3"    → -6   ✓
+```
+
+### D2 — true division + EvalError on zero
+```
+python calc.py "7/2"   → 3.5              (exit 0)  ✓
+python calc.py "1/0"   → Error: Division by zero (stderr, exit 1, no traceback)  ✓
+python calc.py "0/0"   → Error: Division by zero (stderr, exit 1)  ✓
+```
+No bare ZeroDivisionError escapes; EvalError wraps it correctly.
+
+### D3 — result type
+```
+python calc.py "4/2"   → 2    (int, no trailing .0)  ✓
+python calc.py "7/2"   → 3.5  (float)                ✓
+python calc.py "100/10"→ 10   (whole-valued)          ✓
+python calc.py "1/3"   → 0.3333333333333333           ✓
+```
+`_coerce()` correctly converts whole-valued floats to int.
+
+### D4 — CLI
+```
+python calc.py "2+3*4"   → stdout: 14, exit 0               ✓
+python calc.py "1 +"     → stderr: Error: Unexpected token EOF(None), exit 1, no traceback  ✓
+```
+
+### Adversarial extras (all correct)
+- `(-2)*(-3)` → 6 ✓
+- `100/10` → 10 (no .0) ✓
+- `1/3` → 0.333... ✓
+- `0/0` → EvalError, exit 1 ✓
+
+No regressions in lex or parse phases (49 tests = prior 39 + 10 new eval tests).