Load lazy route boundary metadata before bubbling client middleware errors that occur before route handlers run. This preserves route-level error boundaries when route module splitting loads middleware from a separate chunk.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Move the route module splitting explanation from the future flags page into the automatic code splitting guide.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Convert lazy route load failures encountered while selecting client middleware error boundaries into data strategy error results instead of allowing them to escape the middleware pipeline.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Simplify the error handler using an optional catch binding instead of an unused variable + eslint-disable comment.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Clean up the v8 route module splitting migration now that splitRouteModules defaults to true. Remove obsolete future flag warning coverage, mark the config change as major, and simplify test/playground configs that rely on the default behavior.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

brophdawg11 deleted the agents/v8-splitroutemodules-default-config branch