Added the `edit` terminal editor with saving, Find, go-to-line, and protection against closing with unsaved changes.
Full-screen terminal programs can now receive direct keyboard input. Terminal dimensions and editor resizing were also improved, including cursor visibility in longer documents.
Added configurable network routes, including default and blackhole routes.
Router management now groups routing, port forwarding, and firewall policies under the `router` command.
The separate `firewall` command was removed, and replaced by an alias to the new respective router commands.