Add Logisim Evolution support

- Include logisim‑evolution in the core packages list.
- Add `logisim-evolution.enable` option to system modules (enabled on
  desktop).
- Bind `SUPER SHIFT F` to toggle floating windows.
- Add tiling rule for Logisim windows.
- Update `upf` alias to specify the flake path.
- Refresh flake.lock revisions for firefox‑addons and wrappers.

hosts/default/system-modules.nix

@@ -47,6 +47,7 @@ _: {
     lazygit.enable = false; # Lazygit: simple TUI for Git
     opencode.enable = false; # OpenCode: tools for coding and development
     jan.enable = true; # Jan: AI chat UI
+    logisim-evolution.enable = false; # Logisim-Evolution: Digital logic designer and simulator
 
     /*
     Communication & Collaboration