Latest build (2026-11-01 4ec146c)

Built automatically from 4ec146c: Rename Negatron Arena -> Neutron Arena in docs/comments. Thor verification checklist and release gaps: https://github.com/sirbilliams/neutron2-Android/blob/4ec146c8c5284ecd2cf6fcc9bd2f88a7e54608bb/docs/release-gap.md