Merge staging-next into staging

- `mx-puppet-discord` was removed from Nixpkgs along with its NixOS module as it was unmaintained and was the only user of sha1 hashes in tree.

- `gradience` has been removed because it was archived upstream.

- `kbd` package's `outputs` now include a `man` and `scripts` outputs. The `unicode_start` and `unicode_stop` Bash scripts are now part of the `scripts` output, allowing most usages of the `kbd` package to not pull in `bash`.

- `spidermonkey_91` has been removed, as it has been EOL since September 2022.

- Syncthing has been updated to version 2.0.0.

- COSMIC DE has been updated to the beta version, bringing it closer to its first stable release. This includes updates to its core components, applications, and overall stability.

## New Modules {#sec-release-25.11-new-modules}

<!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->

      cosmic-files

      config.services.displayManager.cosmic-greeter.package

      cosmic-idle

      cosmic-initial-setup

      cosmic-launcher

      cosmic-notifications

      cosmic-osd

    services.graphical-desktop.enable = true;

    xdg = {

      # Required for cosmic-osd

      sounds.enable = true;

      icons.fallbackCursorThemes = lib.mkDefault [ "Cosmic" ];

      portal = {

      settings = {

        default_session = {

          user = "cosmic-greeter";

          command = ''${lib.getExe' pkgs.coreutils "env"} XCURSOR_THEME="''${XCURSOR_THEME:-Pop}" systemd-cat -t cosmic-greeter ${lib.getExe pkgs.cosmic-comp} ${lib.getExe cfg.package}'';

          command = ''${lib.getExe' pkgs.coreutils "env"} XCURSOR_THEME="''${XCURSOR_THEME:-Pop}" ${lib.getExe' cfg.package "cosmic-greeter-start"}'';

        };

        initial_session = lib.mkIf (cfgAutoLogin.enable && (cfgAutoLogin.user != null)) {

          user = cfgAutoLogin.user;

          "journalctl -o cat -u vector.service | grep 'component_type=dnstap' | grep 'Listening... path=\"${dnstapSocket}\"'"

        )

        machine.wait_for_file("${dnstapSocket}")

        machine.succeed("test 770 -eq $(stat -c '%a' ${dnstapSocket})")

        machine.wait_for_open_unix_socket("${dnstapSocket}")

      dnsclient.systemctl("start network-online.target")

      dnsclient.wait_for_unit("network-online.target")