feat: complete git.nix with LFS, credentials, gpg, aliases

home/git.nix

@@ -3,18 +3,58 @@
   programs.git = {
     enable = true;
 
+    # Git LFS support
+    lfs.enable = true;
+
     settings = {
       user = {
         name = "mikl";
         email = "mikl@iscg.dev";
       };
+
       init.defaultBranch = "main";
+
+      # Always rebase on pull
       pull.rebase = true;
+
+      # GPG signing (used by pass)
+      gpg = {
+        format = "openpgp";
+        program = "${pkgs.gnupg}/bin/gpg";
+      };
+
+      # Better diff algorithm (longer but faster on large files)
+      diff.algorithm = "histogram";
     };
-    
+
+    # Extra config that doesn't fit standard options
+    extraConfig = {
+      # Use osxkeychain for forgejo and other HTTPS remotes
+      credential.helper = "osxkeychain";
+      "credential.https://git.iscg.dev.helper" = "osxkeychain";
+
+      # Color output
+      color.ui = "auto";
+      color.diff = "auto";
+      color.status = "auto";
+      color.branch = "auto";
+
+      # Useful aliases (in addition to shell aliases)
+      alias.st = "status";
+      alias.co = "checkout";
+      alias.br = "branch";
+      alias.ci = "commit";
+      alias.unstage = "reset HEAD --";
+      alias.last = "log -1 HEAD";
+      alias.visual = "!gitk";
+    };
+
     ignores = [
       ".DS_Store"
       "*.swp"
+      "*~"
+      ".idea/"
+      ".vscode/"
     ];
   };