Toolchain drift (clippy 0.1.97): pre-existing on main, all mechanical
and behaviour-preserving.
- bread-theme/gtk.rs: `type AppCssBuilder` alias for the repeated
`Rc<dyn Fn(&Palette) -> String>` (type_complexity ×4).
- bread-theme/lib.rs: `sort_by_key(|..| Reverse(len))` (unnecessary_sort_by).
- bread-theme/output.rs: `io::Error::other`; struct-init in a test.
- bread-utils/singleton.rs: explicit `.truncate(false)` on the lock file
open — we only clear it after winning the lock (suspicious_open_options).
- bread-polkit/identity.rs: elide `pick_user` lifetimes.
bread-app is the GTK bootstrap new tools should use instead of another
copied main.rs: com.breadway.* app id, singleton lock, optional
gtk_popup re-export, optional bread.command.<app>.** listen loop.
Tests cover app-id helpers and command-verb parse. Existing apps are
not migrated.
bread-polkit is an own PolicyKit1 session authentication agent with a
bread-theme GTK4 password prompt (not a polkit-gnome wrapper).
Autostart via contrib/bread-polkit.desktop or exec-once. Not a bakery
product; not added to the BOS ISO lockfile.
