refactor(ssh): avoid alias merge fold

Generate SSH shell aliases with listToAttrs so evaluation does not repeatedly merge a growing alias set.

Author: khaneliman

modules/common/programs/terminal/tools/ssh/default.nix

@@ -145,9 +145,12 @@ in
 
     khanelinix = {
       home.extraOptions = {
-        home.shellAliases = lib.foldl (
-          aliases: system: aliases // { "ssh-${system}" = "ssh ${system} -t tmux a"; }
-        ) { } (builtins.attrNames other-hosts);
+        home.shellAliases = builtins.listToAttrs (
+          map (system: {
+            name = "ssh-${system}";
+            value = "ssh ${system} -t tmux a";
+          }) (builtins.attrNames other-hosts)
+        );
       };
     };