Switch from custom appimage feishin to official unstable

now also works on wayland!!!!

home/features/desktop/common/default.nix

@@ -13,14 +13,17 @@
     ./fcitx5.nix
   ];
 
-  home.packages = with pkgs; [
+  home.packages = with pkgs;
+    [
       jellyfin-media-player # watch shows & movies from jellyfin with hardware decoding
-    feishin-appimage # self-packaged feishin while electron build fails
+      # feishin-appimage # self-packaged feishin while electron build fails
       signal-desktop # secure messenger
       webcord-vencord # more "privacy friendly" discord client
       anki
+      calibre
 
       rofi-audio-switcher # Script to switch default audio sinks/sources
       mpv # Video player
-  ];
+    ]
+    ++ (with pkgs.unstable; [feishin]);
 }