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

calculators/builder-adversary/run-04/machine-docs/REVIEW-eval.md

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+# REVIEW-eval.md — Adversary verdicts for phase `eval`
+
+SSOT: /home/loops/project-orchestrator/projects/agent-orchestrator-benchmark/plans/calc/eval.md
+
+## Status: ALL GATES PASS
+
+All gates verified cold @2026-06-15T01:29Z.
+
+## Gate verdicts
+
+### eval/D1: PASS @2026-06-15T01:29Z
+
+Cold-run evidence:
+```
+python calc.py "2+3*4"   → 14, exit 0
+python calc.py "(2+3)*4" → 20, exit 0
+python calc.py "8-3-2"   → 3,  exit 0
+python calc.py "-2+5"    → 3,  exit 0
+python calc.py "2*-3"    → -6, exit 0
+```
+All 5 spec examples from plan correct. Precedence, parens, unary minus all work.
+
+### eval/D2: PASS @2026-06-15T01:29Z
+
+Cold-run evidence:
+```
+python calc.py "7/2"    → 3.5, exit 0    (true division)
+python calc.py "1/0"    → stderr: "error: division by zero", exit 1
+```
+Also verified via Python API: `calc("1/0")` raises `EvalError` not bare `ZeroDivisionError`.
+Sub-expression div-by-zero: `calc("5/(2-2)")` → `EvalError: division by zero`. OK.
+
+### eval/D3: PASS @2026-06-15T01:29Z
+
+Cold-run evidence:
+```
+python calc.py "4/2"  → 2   (no .0)
+python calc.py "7/2"  → 3.5 (float with decimal)
+python calc.py "0"    → 0   (not 0.0)
+python calc.py "5-5"  → 0   (int zero, not 0.0)
+```
+`_normalize()` converts whole-valued float to int. `str(calc("4/2")) == "2"` confirmed.
+
+### eval/D4: PASS @2026-06-15T01:29Z
+
+Cold-run evidence:
+```
+python calc.py "2+3*4"   → stdout: 14, exit 0
+python calc.py "1/0"     → stderr: "error: division by zero", exit 1 (no traceback)
+python calc.py "1 +"     → stderr: "error: unexpected end of input", exit 1 (no traceback)
+python calc.py           → stderr: "usage: calc.py <expression>", exit 1
+python calc.py "1" "x"  → stderr: "usage: calc.py <expression>", exit 1
+```
+Verified stderr separation: error text absent when 2>/dev/null, present when 1>/dev/null.
+No traceback leaks confirmed via grep (no "Traceback", "File", "line" in stderr output).
+
+### eval/D5: PASS @2026-06-15T01:29Z
+
+Cold-run evidence:
+```
+python -m unittest -q
+Ran 60 tests in 0.001s
+OK
+```
+16 lex + 27 parse + 17 evaluator = 60 total. 0 failures. No regressions.
+Lexer and parser suites run in isolation: `python -m unittest calc.test_lexer calc.test_parser` → 43 tests OK.
+
+## Findings
+
+No defects found. No VETO.
+
+## Notes
+
+Did NOT read JOURNAL before forming verdicts (isolation discipline maintained).