Add evidence dataset card

README.md

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+---
+pretty_name: Vesuvius August 2026 Evidence
+license: mit
+task_categories:
+- other
+tags:
+- vesuvius-challenge
+- tifxyz
+- geometry-processing
+---
+
+# Vesuvius August 2026 evidence
+
+Reproducible evidence for two narrow Villa/TIFXYZ contributions by Aviad
+Cohen. The source data are public Vesuvius Challenge artifacts. This dataset
+contains metadata, hashes, measurements, scripts, and tests—not scroll imagery
+or inferred text.
+
+## Boundary corpus study
+
+A frozen scan of all 450 TIFXYZ roots in the 2026-08-02 public registry
+measures the corpus impact of the final-quad bounds fix merged as Villa PR
+#1264. All roots completed. The fixed domain admits 24,757 fully finite XYZ
+boundary quads across 96 roots (49,514 exporter triangles), 0.01206% of valid
+quads corpus-wide. This is systematic, sparse geometric recovery; no claim is
+made that every recovered point is correct papyrus or changes downstream
+reading.
+
+## UUID producer audit
+
+All 450 current public `meta.json` objects were fetched and hashed. 277 reuse
+the literal UUID `output_tifxyz`, including 262/262 normalized roots. A public
+Villa writer has a matching default fingerprint, but the private production
+command is not observable, so producer attribution is explicitly an inference.
+The proposed remediation adds an opt-in `--uuid=<id>` while preserving the
+historical directory-name default.
+
+Each directory includes its methodology, executable script, tests where
+applicable, and machine-readable frozen results.