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_7b_seeds.pbs

@@ -0,0 +1,38 @@
+#!/bin/bash
+# Seeds 2-3 for the three single-seed 7B runs (manuscript review 2026-09-11): llm_merge_hpc
+# (Fisher-Muller), llm_moe_hard_hpc (union vs fusion, hard) and llm_directed_hard_hpc (directed
+# selection, hard). One element per seed; the hard pair stays sequential because directed reuses the
+# hard specialists moe trains (models/llm/spec_*_hard_s{seed}). Seed 1 took 8 + 24 min on one L40S.
+# Output lands in results/llm_<name>_hpc/s{seed}/ (seed 1 was moved to s1/).
+#   submit: qsub hpc/llm_7b_seeds.pbs     status: qstat -u $USER -t
+#PBS -l select=1:ncpus=8:mem=64gb:ngpus=1:gpu_type=L40S
+#PBS -l walltime=01:30:00
+#PBS -N lam_7b_seeds
+#PBS -J 2-3
+
+cd "$PBS_O_WORKDIR"
+export HF_HOME="$EPHEMERAL/hf_cache"
+export TOKENIZERS_PARALLELISM=false
+export UV_CACHE_DIR="$EPHEMERAL/uvcache"
+export PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True
+
+SEED=$PBS_ARRAY_INDEX
+source .venv/bin/activate
+nvidia-smi --query-gpu=name,memory.total,driver_version --format=csv,noheader
+echo "seed=$SEED start=$(date)"
+mkdir -p configs/llm/_gen
+
+for NAME in merge moe_hard directed_hard; do
+  CFG="configs/llm/_gen/${NAME}_hpc_s${SEED}.yaml"
+  python - "$SEED" "$NAME" "$CFG" <<'PYEOF'
+import sys, yaml
+seed, name, out = int(sys.argv[1]), sys.argv[2], sys.argv[3]
+cfg = yaml.safe_load(open(f"configs/llm/{name}_hpc.yaml"))
+cfg["seed"] = seed
+cfg["output"] = {"dir": f"results/llm_{name}_hpc/s{seed}"}
+yaml.safe_dump(cfg, open(out, "w"), sort_keys=False)
+PYEOF
+  echo "== $NAME seed=$SEED $(date)"
+  python -m llm.experiment "$CFG"
+done
+echo "done: $(date)"