PXIN/Ouroboros-55M-2B

fix: force center alignment on all headers with explicit inline CSS and align attributes

fix: convert inline LaTeX to clean Unicode typography and remove redundant ASCII box

docs: center all sections and add detailed pre-training dataset token allocation mixture

chore: add MIT license

style: center-align all section and subsection headers

docs: link foundational arxiv papers (VMamba, LLaDA, ShowUI, OSWorld, Mind2Web, SeeClick, Fourier Features)

docs: enlarge architecture.png text, fix ASCII diagram alignment, and clean table typography

docs: fix KaTeX inline math delimiters, add clean architecture graphic and responsive tables

docs: initialize Ouroboros-55M-2B model card and banner

initial commit