Replication Data: Vocabulary-Activation Correspondence in Self-Referential LLM Processing

Data and code for a replication study of Dadfar (2026) "Vocabulary-Activation Correspondence in Self-Referential LLM Processing"
(arXiv:2602.11358). The replication fails: VAC as reported does not survive length correction or cross-model validation. The underlying autoregressive dynamics (limit cycles, vocabulary narrowing) are real and reproducible, but they are properties of extended generation, not of self-referential processing specifically.