transformerless_lm: v61 results (reference chain)

Peak 0.643 (cycle 6), highest cycle-1 score yet at 0.640.
Anaphora pulls pronouns toward recent content (substrate F-decay
pressure). Cycle 1 spike + cycle 6 finish but mid-cycle dips.
Mean 0.614 -- on par with iambic, below threading alone.

Leaderboard snapshot:
  v54: peak 0.661, mean 0.619 (trigram + anti-stag + boundary)
  v55: peak 0.652, mean 0.625 (+ subject threading)
  v59: peak 0.618, mean 0.615 (+ iambic)
  v61: peak 0.643, mean 0.614 (+ anaphora; v59 base)

Author: claude