Mithril m.route pushState and static hosting: missing SPA fallback on direct deep-link requests?
Goal Run a Mithril SPA in production behind a static host or CDN while keeping the default History-API (`pushState`) mode of `m.route`. Direct browser entry or a hard refresh on a client route such as `/users/42` must return the SPA shell so Mithril can mount and render the route, rather than the host's 404 page. Constraint Local preview servers often apply