Flatpak manifest builds the crates/ workspace with rust-stable+llvm20
(node SDK and the intltool/libdbusmenu/ayatana chain removed). Root
snapcraft.yaml becomes a from-source Slint recipe (core24, rustup,
MIN memory tier) mirroring packaging/snap-slint runtime sections.
AUR/arch/gentoo swap webkit/gtk/appindicator runtime deps for the
measured Slint set and the source builders compile crates/ directly.
flake.nix: cargoRoot crates, no npm hooks, dlopen runtime libs wrapped.
cc