refactor: rename config dir to lyrathorpe and host labels

Move ./emmathorpe -> ./lyrathorpe (git mv preserves history) and rename the MBP/X1 nixosConfiguration names to lyrathorpe-mbp / lyrathorpe-x1c. The EDaaS host keeps its emmathorpe-edaas name and Emma Thorpe identity; it still imports the shared (renamed) config dir.

Derivation outputs are byte-identical to before; pure relabel.

lyrathorpe/user.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  pkgs,
+  inputs,
+  lib,
+  username,
+  fullName,
+  ...
+}:
+
+{
+  programs.zsh.enable = true;
+  users.users.${username} = {
+    isNormalUser = true;
+    home = "/home/${username}";
+    description = fullName;
+    extraGroups = [
+      "wheel"
+      "docker"
+    ];
+    shell = pkgs.zsh;
+  };
+  programs.firefox = lib.mkIf (config.features.swayDesktop.enable == true) {
+    enable = true;
+  };
+  programs.thunderbird = lib.mkIf (config.features.swayDesktop.enable == true) {
+    enable = true;
+  };
+}