Status: unrefereed candidate computer-assisted research result; not externally verified. Conditional on a fixed pulled speciation signal, the stated class of homogeneous time-dependent birth-death histories admits a cumulative-loss measure coordinate. The candidate derives sharp pointwise projections and certificates under explicit restrictions, plus a fixed-stem finite-event congruence theorem and an endpoint-sampling law. The mathematical claims are unchanged from v0.2.0. Candidate v0.2.1 adds citation and upstream-data audits, CC0-1.0 for original content, a pinned-container replay, normal and optimized checks, claim-to-evidence metadata and an immutable manifest. Internal replay is not peer review, formal proof verification, biological validation, exhaustive novelty or independent reproduction. GitHub: https://github.com/ipitchford/affine-diversification-fibresRelease: https://github.com/ipitchford/affine-diversification-fibres/releases/tag/v0.2.1-candidate