[msft-mac] Add karabiner and secretive

Signed-off-by: Mariano Uvalle <jmug@Marianos-MacBook-Pro.local>

hosts/msft-mac/configuration.nix

@@ -25,6 +25,8 @@
     casks = [
       "ghostty"
       "secretive"
+      "karabiner-elements"
+      "raycast"
     ];
   };
 

hosts/msft-mac/home.nix

@@ -9,6 +9,7 @@
     ../../home-modules/default.nix
     ../../home-modules/direnv.nix
     ../../home-modules/ghostty-config.nix
+    ../../home-modules/karabiner.nix
     ../../home-modules/lazygit.nix
     ../../home-modules/nvim.nix
     ../../home-modules/starship.nix
@@ -63,6 +64,14 @@
     stateVersion = "25.05";
   };
 
+  programs.ssh = {
+    enable = true;
+    extraConfig = ''
+Host *
+  IdentityAgent /Users/jmug/Library/Containers/com.maxgoedjen.Secretive.SecretAgent/Data/socket.ssh
+    '';
+  };
+
   programs.zsh = {
     shellAliases = {
       # TODO BEGIN Interpolate the name of the host here.