Manuscript revision and pending experiment work, snapshot before restructuring

Clarity pass over the main text (36-item audit), Discussion rewrite and cut,
acknowledgements, Souly et al. as ref 62, lettered SI panels, model section
moved under Results; plus the untracked curriculum/society/compose/smol
configs, runners, figures, stats and tests that the SI already cites.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y64o8FKP7rCuXzC48pxpMm

hpc/llm_cull.pbs

@@ -0,0 +1,34 @@
+#!/bin/bash
+# Differential reproduction in the six-generation population (manuscript revision 2026-09-12):
+# configs/llm/curriculum_v5_cull.yaml (isolated + declinable society, both with culling), one element
+# per seed 1-3, ~1.5 h each. Output results/llm_curriculum_v5_cull/s{seed}/.
+#   submit: qsub hpc/llm_cull.pbs     status: qstat -u $USER -t
+#PBS -l select=1:ncpus=8:mem=64gb:ngpus=1:gpu_type=L40S
+#PBS -l walltime=03:00:00
+#PBS -N lam_cull
+#PBS -J 1-3
+
+cd "$PBS_O_WORKDIR"
+export HF_HOME="$EPHEMERAL/hf_cache"
+export HF_DATASETS_CACHE="$EPHEMERAL/hf_cache/datasets"
+export TOKENIZERS_PARALLELISM=false
+export UV_CACHE_DIR="$EPHEMERAL/uvcache"
+export PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True
+source .venv/bin/activate
+nvidia-smi --query-gpu=name,memory.total,driver_version --format=csv,noheader
+mkdir -p configs/llm/_gen
+SEED=$PBS_ARRAY_INDEX
+echo "seed=$SEED start=$(date)"
+CFG="configs/llm/_gen/curriculum_v5_cull_s${SEED}.yaml"
+python - "$SEED" "$CFG" <<'PYEOF'
+import sys, yaml
+seed, out = int(sys.argv[1]), sys.argv[2]
+cfg = yaml.safe_load(open("configs/llm/curriculum_v5_cull.yaml"))
+cfg["seed"] = seed
+cfg["batch_size"] = 48
+cfg["train_batch_size"] = 4
+cfg["output"] = {"dir": f"results/llm_curriculum_v5_cull/s{seed}"}
+yaml.safe_dump(cfg, open(out, "w"), sort_keys=False)
+PYEOF
+python -m llm.experiment "$CFG"
+echo "done: $(date)"