fix(sweep): reclaim dormant anatomy-3D pages + purge sunset-domain/purple (byte-aligned GitHub de9e538)

chore(sync): mirror backend .py + Dockerfile to Space (hf-sync-backend)

fix(a11oy): /grc mobile h-scroll + B324 MD5 usedforsecurity=False (organs amaru+sentra) — byte-identical with GitHub 3771e44