Have fluffychat as matrix client

This reverts commit 0e09603af7.

applications/matrix-element.nix

@@ -4,6 +4,6 @@ let
 in
 {
     environment.systemPackages = with pkgs; [
-        element-desktop
+        fluffychat
     ];
 }

configuration.nix

@@ -48,6 +48,20 @@ in
     variant = "";
   };
 
+  # Podman service setup
+  virtualisation.containers.enable = true;
+  virtualisation = {
+    podman = {
+      enable = true;
+
+      # Create a `docker` alias for podman, to use it as a drop-in replacement
+      dockerCompat = true;
+
+      # Required for containers under podman-compose to be able to talk to each other.
+      defaultNetwork.settings.dns_enabled = true;
+    };
+  };
+
   # Configure console keymap
   console.keyMap = "de-latin1";
 
@@ -56,7 +70,7 @@ in
         networkmanager
         epiphany
         nodejs_24
-        podman
+        dive
         podman-tui
         podman-compose
   ];