refactor: desktop default applications

modules/capabilities/niri/default.nix

@@ -32,9 +32,9 @@ in
     }:
     let
       repoTheme = repo.theme.kanagawa;
-      browserCommand = repo.desktop.browser.command;
-      fileManagerPackage = pkgs.${repo.desktop.fileManager.packageAttr};
-      terminalCommand = config.repo.terminal.primary.command;
+      browserCommand = config.meta.desktop.browser.command;
+      fileManagerPackage = config.meta.desktop.fileManager.package;
+      terminalCommand = config.meta.desktop.terminal.command;
       outputs = lib.mapAttrs (
         _: display:
         {