feat(qutebrowser): refactor theme loading

overlays/derivations/starship.nix

@@ -56,6 +56,7 @@
     ocaml = {symbol = "ml ";};
     opa = {symbol = "opa ";};
     os = {
+      disabled = false;
       symbols = {
         AIX = "aix ";
         AlmaLinux = "alma ";
@@ -126,6 +127,14 @@
     terraform = {symbol = "terraform ";};
     typst = {symbol = "typst ";};
     zig = {symbol = "zig ";};
+    username = {
+      show_always = true;
+      format = "[$user]($style)@";
+    };
+    hostname = {
+      ssh_only = false;
+      format = "[$ssh_symbol$hostname]($style) |> ";
+    };
   };
 in
   symlinkJoin {