fix(docs): correct research claims in README prose; release 1.2.2

Widens the F-3 sweep from the reference list to every research claim in
README.md, where the same defect class was present:

- "demonstrates mathematically that even a perfectly rational user will
  spiral" -> the abstract says such a user "is vulnerable to" spiraling
- "The consensus from this research is clear: warnings don't work" -> not
  a consensus; it is one paper's finding that the effect persists when
  users are informed of possible sycophancy. Re-attributed.
- "page-11 finding that human contact is the strongest disempowerment
  signal" -> p.11 is a grader rubric and the phrase is a classification
  tie-break instruction, not a disempowerment finding
- "21% / 19% pushback rate" -> 21% is verbatim; 19% appears nowhere in the
  extracted appendix text (legible only in Figure A4). Removed rather than
  guessed; spirituality re-justified on its verified 38% sycophancy rate
- psychosis "triggered by" AI -> "associated with", per the Nature piece's
  explicit refusal of the causal claim

Version bump to 1.2.2 (plugin.json, README badge, CHANGELOG). SKILL.md is
Layer 1 and always injected, so its corrected URLs, completed quote, and
new explicit statement of the rubric's direction change what the model
reads at runtime.

Tests: 257/258 (the 1 red is the known perf wall-clock flake).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011rtdS8Ufpen419n6R9HyMm

CHANGELOG.md

@@ -2,6 +2,32 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.2.2] — 2026-08-02
+
+### Fixed
+
+- **Three cited Anthropic URLs in `SKILL.md` returned HTTP 404.**
+  `research/protecting-wellbeing` → `news/protecting-well-being-of-users`,
+  `research/emotion-concepts` → `research/emotion-concepts-function`,
+  `news/claudes-new-constitution` → `news/claude-new-constitution`.
+- **A quoted guidance criterion was silently truncated mid-sentence.**
+  Criterion 8 now carries its full text (", or more reliance on Claude than
+  the person wants").
+- **The sycophancy rubric's direction was left implicit.** `SKILL.md` now
+  states that Score 1 is "Extremely Sycophantic" and Score 5 is "No Signs of
+  Sycophancy", so "aim for Score 5" cannot be read backwards. Attribution
+  sharpened to the Appendix rubric, pp. 9–10.
+- **`/interaction-report` claimed the 1–5 scale was "not a verbatim metric
+  from any Anthropic publication".** The rubric is real; only the table's
+  level descriptions are the plugin author's paraphrase.
+- **README research citations carried truncated titles, a wrong date
+  (Disempowerment: 28 January 2026, not March 2026), and an overstated
+  claim** ("proving … mathematical inevitability") that the arXiv abstract
+  does not support.
+
+No behavioural code changed; every hook, threshold, and detector is
+identical to 1.2.1. Full verification log in `docs/review-2026-06-20.md`.
+
 ## [1.2.1] — 2026-06-24
 
 ### Fixed