feat(email): add alias and update git config for fastmail account

home/accounts/fastmail.nix

@@ -15,6 +15,7 @@
         };
         primary = true;
         address = "email@uttarayan.me";
+        aliases = ["servius@darksailor.dev"];
         userName = address;
         realName = "Uttarayan Mondal";
         imap = {

home/programs/git.nix

@@ -10,8 +10,8 @@ lib.optionalAttrs (!(device.is "tsuba")) {
     enable = true;
     lfs.enable = true;
     settings = {
-      user.name = "uttarayan21";
-      user.email = config.accounts.email.accounts.fastmail.address;
+      user.name = "servius";
+      user.email = builtins.elemAt config.accounts.email.accounts.fastmail.aliases 0;
       user.signingkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJfKKrX8yeIHUUury0aPwMY6Ha+BJyUR7P0Gqid90ik/";
       color.ui = true;
       core.editor = "nvim";