Verification of the divisor-ratio argument

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divisor_ratio_commentary_correction: Corrects the review and grade's necessity claim about dense tails while preserving the theorem's stronger exact-repetition statement.

divisor_ratio_grade: Preserves the distinct grader's independent derivation and every finding, with later adjudications distinguished from the original verdict.

divisor_ratio_review: Preserves the full independent proof review, source comparison, attacks and findings, with the later corrections separately attributed.

divisor_ratio_source_reading: Pins the exact two-page review subject and published source, separates every reader's scope, and maps accepted corrections to current pages.

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The independent review preserves the whole-unit derivation, source comparison, attacks and documentary findings. The distinct grade preserves its separate rederivation and all required and optional findings. The commentary correction corrects their shared necessity claim about dense tails without silently rewriting either original voice or changing the native theorem's verdict.

The source-reading record supplies exact subject and context pins, published-source identity, each reader's actual scope and the mapping to current corrections. The review is relative to the quoted GGPY input at its recorded standing; the original sieve proof and all formal or extended results remain outside this unit.