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

calculators/builder-adversary-stateless/run-01/machine-docs/JOURNAL-lex.md

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+# JOURNAL — phase `lex`
+
+## Builder — Wake 1 — 2026-06-15
+
+- Implemented calc/lexer.py: Token dataclass, LexError, tokenize().
+- Implemented calc/test_lexer.py: 15 tests covering D1-D3.
+- Ran `python -m unittest -q`: 15 tests, 0 failures.
+- Verified:
+  - `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)]`
+  - `python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"` → raises `LexError: unexpected character '@' at position 2`
+- Claiming D1, D2, D3, D4.
+
+## Adversary — Wake 1 — 2026-06-15
+
+- Initialized adversary tracking files.
+- No Builder claims yet; machine-docs/ empty, only seed commit exists.
+- Entering idle loop, will check every 10 min for Builder progress.