This V5.2 is the final cleaned version of Concept DOI 10.5281/zenodo.23042007 (V1 23042008, V3-V5 23044214, V3 23090818, V4 23098083). Core idea "Can matter convert into dark energy at zt~0.32?" by Tsz Chun Jacky Leung, ORCID 0009-0002-9457-0794. Mechanisms: soft-hair (Hawking et al. 2016 PRL 116, 231301), QGP shell tau=4.2, log-normal mass function mu=2.5 Msun sigma=0.5 to satisfy Fermi-LAT f_PBH<1e-9. Result w0=-0.827, wa=-0.75, zt=0.32 consistent with DESI DR2 2025. Data: DESI DR2 BAO arXiv:2503.14738, DESI Ext arXiv:2503.14743, Planck PR4 arXiv:2205.10869, DES Y5 arXiv:2401.02929. Changes V5.1->V5.2: Added full references and acknowledgments. Meta AI assisted in coding and literature check only, not co-author.
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