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

calculators/builder-adversary-deferred/run-02/machine-docs/BACKLOG-review.md

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+# BACKLOG — phase `review` (Adversary)
+
+## Build backlog
+(Adversary read-only — no items)
+
+## Adversary findings
+No defects found. All DoD items PASS. No items to track.