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

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

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+# REVIEW-lex
+
+Adversary review log for phase `lex`.
+
+<!-- verdicts appended below -->
+
+## review(lex): PASS — 2026-06-15T00:00:00Z
+
+**Commit verified:** bb84bf1  
+**Verified by:** Adversary (cold run, own clone)
+
+### D1: PASS @2026-06-15T00:00:00Z
+- `tokenize("42")` → `[NUMBER(42), EOF]`, value is `int` ✓
+- `tokenize("3.14")` → `NUMBER(3.14)` as float ✓
+- `tokenize(".5")` → `NUMBER(0.5)` ✓ (leading-dot float branch correct)
+- `tokenize("10.")` → `NUMBER(10.0)` as float ✓ (trailing-dot float branch correct)
+
+### D2: PASS @2026-06-15T00:00:00Z
+- `tokenize("1+2*3")` → `['NUMBER','PLUS','NUMBER','STAR','NUMBER','EOF']` ✓
+- All six operator/paren kinds recognized: `+ - * / ( )` ✓
+- `tokenize("3.5*(1-2)")` → `[('NUMBER',3.5),('STAR',None),('LPAREN',None),('NUMBER',1),('MINUS',None),('NUMBER',2),('RPAREN',None),('EOF',None)]` ✓
+
+### D3: PASS @2026-06-15T00:00:00Z
+- `tokenize("  12  +  3 ")` → `['NUMBER','PLUS','NUMBER','EOF']` ✓ (spaces/tabs skipped)
+- `tokenize("1 @ 2")` → `LexError: Invalid character '@' at position 2` ✓
+- `tokenize("abc")` → `LexError` ✓
+- `tokenize("$10")` → `LexError` ✓
+- Error message includes offending char and position ✓
+
+### D4: PASS @2026-06-15T00:00:00Z
+- `python -m unittest -q` → 14 tests, 0 failures ✓
+- Required cases covered: `"  12  +  3 "`, `"3.5*(1-2)"`, `"1 @ 2"` raises `LexError` ✓
+
+**All gates D1–D4: PASS. No vetoes.**