claude-code vscodium: use terminal mode

Works around a supposed nodejs version mismatch of the extension

home/modules/vscodium.nix

@@ -116,6 +116,7 @@
           "vim.neovimPath" = lib.getExe pkgs.myVim;
           "sync-rsync.options" = [ ];
           "direnv.path.executable" = lib.getExe pkgs.direnv;
+          "claudeCode.useTerminal" = true;
         };
     };
   };