Convert tmux config to Nix and personalize system configuration

home/modules/git.nix

@@ -3,8 +3,8 @@
 {
   programs.git = {
     enable = true;
-    userName = "Your Name";  # TODO: Customize
-    userEmail = "your.email@example.com";  # TODO: Customize
+    userName = "Elias Kohout";
+    userEmail = "elias@kohout.de";
 
     extraConfig = {
       init.defaultBranch = "main";
@@ -13,18 +13,13 @@
     };
 
     aliases = {
-      st = "status";
-      co = "checkout";
-      br = "branch";
-      ci = "commit";
       unstage = "reset HEAD --";
       last = "log -1 HEAD";
       visual = "log --graph --oneline --all";
     };
   };
 
-  # GPG key signing (optional, uncomment if using)
-  # programs.gpg.enable = true;
-  # services.gpg-agent.enable = true;
-
+  # GPG key signing
+  programs.gpg.enable = true;
+  services.gpg-agent.enable = true;
 }