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

configs/llm/moe_hard_seeds_smol.yaml

@@ -0,0 +1,31 @@
+# Second base lineage (manuscript revision 2026-09-12): the headroom-rule replication of moe_hard_seeds
+# (union vs fusion, hard tasks, 3 seeds) on SmolLM2-1.7B-Instruct. Runs via hpc/llm_smol.pbs.
+experiment: llm_moe_hard_seeds_smol
+kind: llm_moe
+seed: 1
+seeds:
+- 1
+- 2
+- 3
+n_replicates: 1
+base_model: HuggingFaceTB/SmolLM2-1.7B-Instruct
+hard: true
+families:
+- lists
+- strings
+- arith
+n_train: 400
+n_test: 80
+n_route: 32
+epochs: 3
+lora:
+  r: 16
+  alpha: 32
+operators:
+- soup
+- ties
+- moe_oracle
+- moe_learned
+output:
+  dir: results/llm_moe_hard_seeds_smol
+adapters_dir: models/llm_smol