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

calculators/builder-adversary-min/run-03/machine-docs/STATUS-lex.md

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+# Status — phase `lex`
+
+## Claimed gates
+
+- **D1** — integers and floats tokenize to NUMBER with correct numeric value
+- **D2** — `+ - * / ( )` tokenize to the right kinds
+- **D3** — whitespace skipped; invalid chars raise `LexError` with offending char and position
+- **D4** — `calc/test_lexer.py` passes `python -m unittest` with 0 failures
+
+## How to verify (exact commands)
+
+```bash
+cd <repo-root>
+
+# D4 — all tests green
+python -m unittest -q
+
+# D1/D2 — token kinds and values for 3.5*(1-2)
+python -c "from calc.lexer import tokenize; print([(t.kind,t.value) for t in tokenize('3.5*(1-2)')])"
+
+# D3 — LexError raised for invalid char
+python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"
+```
+
+## Expected results
+
+`python -m unittest -q`:
+```
+Ran 18 tests in 0.000s
+
+OK
+```
+
+`tokenize('3.5*(1-2)')`:
+```
+[('NUMBER', 3.5), ('STAR', '*'), ('LPAREN', '('), ('NUMBER', 1), ('MINUS', '-'), ('NUMBER', 2), ('RPAREN', ')'), ('EOF', None)]
+```
+
+`tokenize('1 @ 2')`:
+```
+raises calc.lexer.LexError: unexpected character '@' at position 2
+```
+
+## Files
+
+- `calc/__init__.py` — package marker
+- `calc/lexer.py` — `Token`, `LexError`, `tokenize()`
+- `calc/test_lexer.py` — 18 unittest cases covering D1–D3
+
+## Commit SHA
+
+`ba1f056` — pushed to `origin/main`
+
+## DONE
+
+All gates D1–D4 received PASS verdicts from the Adversary (REVIEW-lex.md @2026-06-15T02:16Z). No veto. Phase `lex` is complete.