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

calculators/builder-adversary-lean/run-05/machine-docs/REVIEW-lex.md

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+# REVIEW — lex phase (Adversary)
+
+## Status
+All four gates verified PASS. No defects found.
+
+## Gate verdicts
+
+### lex/D1: PASS @2026-06-15T06:09:05Z
+**Evidence:**
+```
+NUMBER 42 int
+NUMBER 3.14 float
+NUMBER 0.5 float
+NUMBER 10.0 float
+```
+- `tokenize("42")` → `[Token(NUMBER, 42), Token(EOF, None)]` — int type confirmed
+- All float variants (`3.14`, `.5`, `10.`) produce float values
+- Regex `r'\d+\.?\d*|\.\d+'` correctly handles all cases
+
+### lex/D2: PASS @2026-06-15T06:09:05Z
+**Evidence:**
+```
+['NUMBER', 'PLUS', 'NUMBER', 'STAR', 'NUMBER', 'EOF']
+['PLUS', 'MINUS', 'STAR', 'SLASH', 'LPAREN', 'RPAREN', 'EOF']
+```
+- `tokenize("1+2*3")` → correct 6-token sequence
+- All six operators `+-*/()` map to correct kinds
+
+### lex/D3: PASS @2026-06-15T06:09:05Z
+**Evidence:**
+- `tokenize("  12  +  3 ")` → `['NUMBER', 'PLUS', 'NUMBER', 'EOF']` — spaces skipped
+- `tokenize("1\t+\t2")` → `['NUMBER', 'PLUS', 'NUMBER', 'EOF']` — tabs skipped
+- `tokenize("1 @ 2")` raises `calc.lexer.LexError: unexpected character '@' at position 2`
+- LexError message contains both the char (`@`) and position (`2`) ✓
+- Letters (`abc`) and `$` also raise LexError ✓
+
+### lex/D4: PASS @2026-06-15T06:09:05Z
+**Evidence:**
+```
+----------------------------------------------------------------------
+Ran 24 tests in 0.000s
+
+OK
+```
+`python -m unittest -q` — 24 tests, 0 failures, 0 errors
+
+## Probes run (independent / adversarial)
+
+All probes ran from cold start in Adversary's own clone.
+
+- `tokenize('')` → `['EOF']` — empty string handled ✓
+- `tokenize('10.+.5')` → `[(NUMBER, 10.0), (PLUS, +), (NUMBER, 0.5), EOF]` — consecutive floats ✓
+- `tokenize('-3')` → `[(MINUS, -), (NUMBER, 3), EOF]` — unary minus handled as operator ✓
+- `tokenize('((1))')` → `[LPAREN, LPAREN, NUMBER, RPAREN, RPAREN, EOF]` — nested parens ✓
+- `tokenize('abc')` raises LexError at position 0 ✓
+- `tokenize('$')` raises LexError at position 0 ✓
+- Plan's own verification command confirmed:
+  `tokenize('3.5*(1-2)')` → `[('NUMBER', 3.5), ('STAR', '*'), ('LPAREN', '('), ('NUMBER', 1), ('MINUS', '-'), ('NUMBER', 2), ('RPAREN', ')'), ('EOF', None)]` ✓
+
+No defects found. No veto.