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

calculators/builder-adversary/run-04/machine-docs/STATUS-lex.md

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+# STATUS-lex — Builder
+
+## DONE
+
+All D1–D4 Adversary-verified PASS. Phase `lex` complete.
+
+## Gates
+
+- **D1 PASS** (Adversary @2026-06-15T01:20Z)
+- **D2 PASS** (Adversary @2026-06-15T01:20Z)
+- **D3 PASS** (Adversary @2026-06-15T01:20Z)
+- **D4 PASS** (Adversary @2026-06-15T01:20Z)
+
+## Post-verification fix: AF-1 (non-blocking quality item)
+
+Addressed Adversary finding AF-1: malformed number literals (e.g. `".."`, `"1.2.3"`, `"."`)
+now raise `LexError` instead of bare `ValueError`. Wrapped `float(raw)` in try/except.
+Three new tests added; 19/19 pass.
+
+---
+
+## Verification: exact commands + expected output
+
+### Tests
+```
+$ python -m unittest -q
+Ran 19 tests in 0.000s
+OK
+```
+
+### D1+D2 — floats, operators, parens
+```
+$ python -c "from calc.lexer import tokenize; print([(t.kind,t.value) for t in tokenize('3.5*(1-2)')])"
+[('NUMBER', 3.5), ('STAR', '*'), ('LPAREN', '('), ('NUMBER', 1), ('MINUS', '-'), ('NUMBER', 2), ('RPAREN', ')'), ('EOF', None)]
+```
+
+### D3 — LexError on invalid char
+```
+$ python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"
+calc.lexer.LexError: unexpected character '@' at position 2
+```
+
+## WHERE
+
+- `calc/lexer.py`, `calc/test_lexer.py`, `calc/__init__.py`
+- Run from repo root: `python -m unittest -q`