ARQ CC BY Public Snapshot: Canonical Protocol and Supporting Notes (2026-03-27)

This archival package captures a CC BY 4.0-identified public snapshot of ARQ materials from the sovereign-entity-recursion repository, updated after the 2026-03-25 snapshot. It contains the canonical ARQ normative and supporting note materials, corresponding PDF twins, and package-level provenance files. This version adds:- the formal theorem companion `protocol/arq/theorem_bounded_entropy_arq.md`- its PDF twin `pdf/arq/theorem_bounded_entropy_arq.pdf`- the addendum hash manifest `hashes/SHA256SUMS_arq_addendum_2026-03-27.txt`- discoverability updates across `protocol/arq/README.md`, `DOC_MAP.md`, `START_HERE.md`, and `pdf/arq/README.md` The theorem companion is additive. It does not replace the existing supporting note `docs/arq/Bounded_Entropy_Accumulation_in_ARQ_Entities_EN.md`; it provides a more compact, publication-facing formal statement of the same boundedness claim under explicit L4 budgets. ARQ is presented here as an additive subsystem linking correction logic to SER continuity and L4 bounded accountability. Promoted deviations require witness-backed traceability, and adaptive handling remains bounded rather than open-ended.