docs: add Zenodo DOI badge (10.5281/zenodo.19329501) + status badges

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

README.adoc

@@ -6,6 +6,10 @@ Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
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+image:https://zenodo.org/badge/DOI/10.5281/zenodo.19329501.svg[DOI,link="https://doi.org/10.5281/zenodo.19329501"]
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+image:https://img.shields.io/badge/tests-49_pass-brightgreen[tests: 49 pass]
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 == Overview
 
 VQL-UT is the next-generation query language for https://github.com/hyperpolymath/nextgen-databases[VeriSimDB], designed to satisfy **all 10 levels of type safety** — the 6 established IO-covered forms and the 4 additional forms identified through our research.