Signed-WET B23 paired pp/pep public fixed-fit residual check

ID: solar.detector.b23_paired_public_fixed_fit_signed_wet

The corrected B23-GS98 pp/pep hit spectra are scored against the same authenticated Borexino 2018 public residuals and diagonal errors, holding the collaboration total fit fixed for all four unresolved detector signs and separate electron branches.

Status: diagnostic

Uncertainty

Sources

Claim boundaries

Diagnostic context only. Cite independent evidence for claims about the world.