paper: reframe the perspective paper around sexual reproduction (v4 -> v5)

Rewrite the-lamarckian-society-v4.md -> v5, making sexual reproduction the
central engine and lifting accessibility for a cross-disciplinary audience
(geneticists, ML engineers, neuroscientists) — every field's jargon glossed
inline, big picture kept legible, measured tone, honest about scope (the
evidence is from minimal models, not LLMs).

Core reframe (section 5): single-teacher distillation is asexual copying,
which collapses (Muller's ratchet = model collapse); the cure is to ground
every birth in reality and to reproduce SEXUALLY — recombining many
complementary parents so offspring can exceed any parent (Fisher-Muller).
Adds the honest limits (outbreeding depression on entangled skills) and the
distinctly-AI advantage (directed sex: choose mates, screen offspring,
unbounded parents). Turns the old "a companion paper will..." into "what we
built and found," folding in the demonstrated results (E1-E11, neural +
MNIST, the learning kernel) and the Riis positioning (concede collapse=drift
as prior art; claim the control-theory cure). Update CLAUDE.md / README
references; results-summary noted alongside.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CLAUDE.md

@@ -25,7 +25,8 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 The two design documents are the source of truth for intent:
 
-- `paper/the-lamarckian-society-v4.md` — the *perspective paper* (the "why").
+- `paper/the-lamarckian-society-v5.md` — the *perspective paper* (the "why"; reframed around sexual
+  reproduction). `paper/results-summary.md` — the plain-language + technical summary of all results.
 - `paper/blueprint.md` — the *technical blueprint* (the "what"/"how"). **It is normative** for
   Layer 1 and the LLM Layer 2; Layer 1.5 is a cost-staged intermediate the blueprint does not
   cover, designed to preserve the same §1 abstractions.