3.3.6 (2026-04-28) Bug Fixes messages: sandbox rendered email HTML as extra XSS defence (cad2aa6) Miscellaneous Chores ignore node modules and yarn.lock (b611d57) Code Refactoring auth: tighten return_to validation (84f4e20) helpers: escape interpolated values in select options (9243524) tracking: remove unused src image proxy (dca7f90)