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/society_v2_calib_c2b.yaml

@@ -0,0 +1,20 @@
+# C2b (prereg §4a amendment under review): confidence-gated inheritance. The pre-registered C2 failed
+# (retention ≤ 0.81 at k ≤ 150 despite competent supply): the child fits eight families of confident
+# garbage alongside the one competent family. Here the child learns only prompts its source is
+# confident on (verifier-free). Measures retention by gate τ, the Youden τ* separating own- from
+# off-family confidence, and the off-family harm of ungated inheritance.
+experiment: llm_society_v2_calib_b_transmission_conf
+kind: llm_society_calib
+stage: transmission_conf
+base_model: Qwen/Qwen2.5-0.5B-Instruct
+seed: 1
+families: [strings, setops, numtheory, mixedtoken, digits, alphabet, prime, wordlen, roman]
+probe_families: [setops, alphabet, digits]
+k_pool: 300          # prompts per family answered by the source (2700 total); gate keeps a subset
+taus: [0.5, 0.7, 0.85]
+epochs: 3
+n_test: 100
+spec_train: 1200
+spec_epochs: 3
+lora: {r: 16, alpha: 32}
+output: {dir: results/llm_society_v2_calib_b_transmission_conf}