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

calculators/builder-adversary-stateless/run-03/machine-docs/JOURNAL-parse.md

@@ -0,0 +1,43 @@
+# JOURNAL — Phase `parse` (Builder)
+
+## 2026-06-15 — Implementation
+
+### Design decisions
+- Grammar: `expr → term ((+|-) term)*`, `term → unary ((*|/) unary)*`, `unary → - unary | primary`, `primary → NUMBER | ( expr )`. Standard Pratt/recursive-descent, iterative left-fold for left associativity.
+- Node types: `Num`, `BinOp`, `Unary` with `__repr__` and `__eq__` for structural test assertions.
+- `ParseError` defined in `parser.py`.
+
+### Test run output
+```
+$ python -m unittest -q
+Ran 44 tests in 0.001s
+OK
+```
+
+### Cold-verify commands verified locally
+```
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('1+2*3')))"
+BinOp('+', Num(1), BinOp('*', Num(2), Num(3)))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; parse(tokenize('1 +'))"
+calc.parser.ParseError: unexpected token 'EOF' (None)
+(exit 1)
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('8-3-2')))"
+BinOp('-', BinOp('-', Num(8), Num(3)), Num(2))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('8/4/2')))"
+BinOp('/', BinOp('/', Num(8), Num(4)), Num(2))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('(1+2)*3')))"
+BinOp('*', BinOp('+', Num(1), Num(2)), Num(3))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('-5')))"
+Unary('-', Num(5))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('-(1+2)')))"
+Unary('-', BinOp('+', Num(1), Num(2)))
+
+$ python -c "from calc.lexer import tokenize; from calc.parser import parse; print(parse(tokenize('3 * -2')))"
+BinOp('*', Num(3), Unary('-', Num(2)))
+```