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

results/llm_directed_hard_hpc/s2/manifest.json

@@ -0,0 +1,26 @@
+{
+  "experiment": "llm_directed_hard_hpc",
+  "master_seed": 2,
+  "git_commit": null,
+  "python": "3.11.7",
+  "libraries": {
+    "numpy": "2.4.6",
+    "scipy": "1.17.1",
+    "pandas": "3.0.3",
+    "pyarrow": "24.0.0",
+    "torch": "2.12.1",
+    "transformers": "5.16.1",
+    "peft": "0.20.0"
+  },
+  "rows": 35,
+  "results_sha256": "27ced93ac5ec7b6af3a5034d97d45326bde182b9894c5abdaf5f867405d978b3",
+  "layer": "2",
+  "tier": "llm",
+  "base_model": "Qwen/Qwen2.5-7B-Instruct",
+  "hard": true,
+  "directed": {
+    "n_candidates": 24,
+    "concentration": 0.5,
+    "n_val": 100
+  }
+}

results/llm_directed_hard_hpc/s2/resolved_config.yaml

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+experiment: llm_directed_hard_hpc
+seed: 2
+n_replicates: 1
+source_config:
+  experiment: llm_directed_hard_hpc
+  kind: llm_directed
+  seed: 2
+  n_replicates: 1
+  base_model: Qwen/Qwen2.5-7B-Instruct
+  hard: true
+  families:
+  - lists
+  - strings
+  - arith
+  n_train: 800
+  n_val: 100
+  n_test: 200
+  n_candidates: 24
+  concentration: 0.5
+  epochs: 3
+  lora:
+    r: 16
+    alpha: 32
+  output:
+    dir: results/llm_directed_hard_hpc/s2