GM-Bench sota-v2 phase-one panel

sota-v2 phase-one release

This release freezes the first public GM-Bench panel under the corrected
sota-v2 contract and the common 4,096-token native-minimum-reasoning API lane.

Evidence state

• 10 pre-registered model cells completed.
• 8 cells are strict, route-matched, cost-complete headline rows.
• Grok 4.5 is diagnostic because usage covers 476/480 decisions and cost covers
  474/480.
• Mistral Medium 3.5 is diagnostic because cost covers 479/480 decisions after
  one adapter fallback.
• All eight eligible rows occupy one overlapping uncertainty tier.
• Every eligible model trails pick-trader (411.619).

The release archive contains the exact ten raw public artifacts, frozen registry
and protocol files, generated panel analysis, and final run/reservation metadata.
manifest.json records byte and canonical JSON hashes plus
compact-to-raw links. SHA256SUMS.txt is committed and
attached beside the archive.

Interpretation

Muse Spark 1.1 has the highest observed eligible mean (231.851), but the study
does not support an ordinal winner claim. The public panel contains eight seeds;
full-family Holm-adjusted p-values are 0.078125, and model intervals overlap.

See docs/blog/sota-v2-findings.md for
the narrative and
docs/REPRODUCING_SOTA_V2_RELEASE.md
for the no-provider-cost verification path.