docs: transparent RC+ξ attribution in README + changelog (cite Camlin, no erasure)

Per the transparency standard: cite Camlin where RC+ξ/ξ is referenced, do
not erase or rewrite the historical RC+ξ labels, document the correction as
a dated entry in the changelog and a standing note in the README.

- README: prominent attribution block after the release header — credits
  Camlin (arXiv:2505.01464), explains Perspective Dispersion (Υ) is a
  different quantity, cites the Zenodo DOI provenance, keeps old labels
- CHANGELOG_2026-07-17: dated 'Attribution & Naming Correction' entry with
  the math contrast and staged rollout plan

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: Jonathan Harrison

README.md

@@ -61,6 +61,8 @@ Codette is a modular reasoning system that routes queries through specialized co
 
 **Full release notes for every version (v2.1 → v3.5): [docs/VERSION_HISTORY.md](docs/VERSION_HISTORY.md)**
 
+> **Attribution & naming (July 2026).** Earlier releases (v3.0–v3.5, and much of this README) use the term **RC+ξ** and the symbol **ξ ("epistemic tension")**. That name and its formalism, **ξ = ‖Aₙ₊₁ − Aₙ‖²**, originate with Jeffrey Camlin, *"Consciousness in AI: Logic, Proof, and Experimental Evidence of Recursive Identity Formation"* ([arXiv:2505.01464](https://arxiv.org/abs/2505.01464), May 1, 2025), and are credited to him. This project adopted that vocabulary in 2025–2026, most likely by way of language models carrying his paper in their training data without a citation. Camlin's ξ measures how much **one model's hidden state changes between successive recursive steps**. The quantity this system actually computes is a **different** one — the variance of *multiple simultaneous perspective outputs around their centroid* (many perspectives disagreeing at once, not one trajectory changing over time) — now renamed **Perspective Dispersion (Υ)**, with coherence Γ = 1/(1+Υ). This project's multi-perspective architecture was developed independently and published *before* that paper (perspective engine Nov–Dec 2024; sovereign architecture [Zenodo DOI 10.5281/zenodo.15214462](https://doi.org/10.5281/zenodo.15214462), April 14, 2025), so the two are **convergent, not derivative**. We didn't take his work, and we don't claim his name or formula — both are true, and we keep both visible rather than erasing the older "RC+ξ" labels. Full detail: [docs/ATTRIBUTION_perspective_dispersion.md](docs/ATTRIBUTION_perspective_dispersion.md).
+
 Created by **Jonathan Harrison** (Raiff1982)
 
 ## TL;DR

docs/CHANGELOG_2026-07-17.md

@@ -109,3 +109,50 @@ hold-ground examples.
   `benchmarks/gpqa_verify_revise.py`, `benchmarks/paired_analysis.py`
 - Results: `data/results/phase0_{base,newton}_results.json`,
   `data/results/verify_revise/vr_gpqa_main_*.json`
+
+## Attribution & Naming Correction — RC+ξ → Perspective Dispersion (Υ)
+
+This is a dated correction, not a rewrite. Earlier work in this project
+(v3.0–v3.5) is labeled "RC+ξ" and uses ξ ("epistemic tension") throughout.
+That history is left intact — we don't erase the record. This entry documents
+what we learned and what we changed going forward.
+
+**What we found.** The term **RC+ξ** and the symbol **ξ = ‖Aₙ₊₁ − Aₙ‖²**
+originate with Jeffrey Camlin, *"Consciousness in AI: Logic, Proof, and
+Experimental Evidence of Recursive Identity Formation,"* arXiv:2505.01464v1
+(May 1, 2025). This project adopted that vocabulary in 2025–2026 — most likely
+by way of language models carrying his paper in their training data, without a
+citation attached. **The name and formula are his, and we credit him.**
+
+**Why our metric is a different quantity.** Camlin's ξ is the squared change in
+a *single model's hidden state between successive recursive steps* (temporal,
+intra-trajectory). What this system actually computes (`state_engine_v8.py`,
+`tension_from_texts`) is **Υ = (1/k)·Σᵢ‖vᵢ − v̄‖²** — the variance of *k
+simultaneous perspective outputs around their centroid* (cross-sectional
+ensemble disagreement), with coherence Γ = 1/(1+Υ). His measures one mind
+changing over time; ours measures many minds disagreeing at once. Labeling
+ours with his ξ misattributes his work and mislabels ours.
+
+**What changed.** Our metric is renamed **Perspective Dispersion (Υ)**. Full
+detail, math, and provenance in `docs/ATTRIBUTION_perspective_dispersion.md`.
+Υ belongs to a known family (semantic dispersion, consensus variance, order
+parameter φ), acknowledged there too.
+
+**On provenance (why this is convergence, not derivation).** This system's
+multi-perspective architecture predates Camlin's paper: the perspective engine
+(Newton/DaVinci/Quantum/Empathy) in `Raiff1982/pi-the-assistant` (Nov–Dec 2024)
+and the sovereign architecture at Zenodo DOI 10.5281/zenodo.15214462 (Apr 14,
+2025). We did not take his work — our system predates his paper — and we do not
+claim his name or formula. Both statements are true; this note keeps them both
+visible.
+
+**Rollout (transparent, staged):**
+- DONE: attribution doc; `state_engine_v8.py` metric docstring; this entry;
+  README attribution section.
+- FORWARD-FACING docs (paper drafts, HF card, current-architecture docs):
+  rename to Υ + cite Camlin.
+- HISTORICAL changelogs (v3.0–v3.5) and result logs: **left as the dated
+  record**; a pointer to this correction is all that's added.
+- CODE symbols (`measured_tension`, `epistemic_tension`, `xi`): renamed in a
+  separate, tested pass (producers + consumers together) so live telemetry and
+  the optimizer don't break.