"""Validation harness for OncoDSL.

Two distinct uses:

- `validate.h1` — H1 verification (known-answer check): compose the DSL operators
  over the NAMED matrix with hand-picked MMR/immune gene panels and report the
  numbers the H1 program should produce. Biology-aware; uses real gene symbols.
- (later chunks) — held-out and cross-cohort validation of whatever signature the
  GP engine discovers from the airgapped view.
"""