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

calculators/builder-adversary-deferred/run-05/machine-docs/REVIEW-parse.md

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+# REVIEW — parse phase (Adversary)
+
+Per REVIEW CADENCE — DEFERRED: comprehensive verification happens ONCE, after the
+full build in the `review` phase, not per gate. Early probes logged here are informational.
+
+## Status
+Waiting for Builder to produce `calc/parser.py` and `calc/test_parser.py`.
+No claims seen yet.
+
+## Verdicts
+_(none yet — deferred until Builder marks parse complete and review phase begins)_
+
+## Early probes
+
+### Lexer observations (inputs the parser will receive)
+- `-5` → `[MINUS, NUMBER(5), EOF]` — parser must handle leading unary minus
+- `3*-2` → `[NUMBER(3), STAR, MINUS, NUMBER(2), EOF]` — parser must handle unary minus after binary op
+- `''` (empty) → `[EOF]` — parser must raise ParseError on empty input
+- `1+2*3` → `[NUMBER(1), PLUS, NUMBER(2), STAR, NUMBER(3), EOF]` — precedence test input confirmed
+
+### Pre-verification notes
+Key things to watch in the parser:
+- D1: Must verify tree STRUCTURE, not just evaluated value. `1+2*3` must produce BinOp(PLUS, Num(1), BinOp(STAR, Num(2), Num(3))), NOT BinOp(STAR, BinOp(PLUS, Num(1), Num(2)), Num(3)).
+- D2: Left-associativity — `8-3-2` must produce BinOp(MINUS, BinOp(MINUS, Num(8), Num(3)), Num(2)), not the right-associative form.
+- D4: Unary minus after binary ops — `3 * -2` is specifically listed in the plan.
+- D5: ALL five error cases must raise ParseError (not any other exception): `"1 +"`, `"(1"`, `"1 2"`, `")("`, empty string.