fix: update secrets approach to match 'nix-secrets'

modules/git/default.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  ...
+}:
+
+let
+  inherit (config.secrets) username;
+  owner = config.users.users.${username}.name;
+in
+{
+  config.sops.templates = {
+    ".gitconfig.email" = {
+      inherit owner;
+      path = "/home/${username}/.gitconfig.email";
+      content = ''
+        [user]
+          email = ${config.sops.placeholder."email/personal"}
+      '';
+    };
+    ".gitconfig.work.email" = {
+      inherit owner;
+      path = "/home/${username}/.gitconfig.work.email";
+      content = ''
+        [user]
+          email = ${config.sops.placeholder."email/work"}
+      '';
+    };
+  };
+}