Fix aerospace namespace conflict and claude-code override

Rename custom aerospace module from services.aerospace to roles.aerospace
to avoid conflicting with nix-darwin's built-in aerospace service support.

Move claude-code package override to flake-level overlay to ensure the
GCS-distributed version is used instead of the npm registry version in
unstable. This is necessary for corporate environments where npm registry
access may be blocked.

flake.nix

@@ -110,6 +110,13 @@
             unstable = import nixpkgs-unstable {
               system = prev.system;
               config.allowUnfree = true;
+              overlays = [
+                # Override claude-code in unstable to use our custom GCS-based build
+                # (needed for corporate networks that block npm registry)
+                (ufinal: uprev: {
+                  claude-code = prev.custom.claude-code or (prev.callPackage ./packages {}).claude-code;
+                })
+              ];
             };
             custom = prev.callPackage ./packages {};
             # Compatibility: bitwarden renamed to bitwarden-desktop in unstable

machines/johno-macbookpro/configuration.nix

@@ -18,10 +18,11 @@
     NSGlobalDomain.AppleShowAllExtensions = true;
   };
 
-  # Enable aerospace system settings
-  services.aerospace = {
+  # Enable our custom aerospace system configuration
+  # (separate from nix-darwin's services.aerospace which manages the service)
+  roles.aerospace = {
     enable = true;
-    enableSpansDisplays = true;  # Default, but shown for clarity
+    enableSpansDisplays = true;
   };
 
   # TODO: Find a way to not duplicate this

modules/aerospace.nix

@@ -3,10 +3,10 @@
 with lib;
 
 let
-  cfg = config.services.aerospace;
+  cfg = config.roles.aerospace;
 in
 {
-  options.services.aerospace = {
+  options.roles.aerospace = {
     enable = mkEnableOption "AeroSpace window manager system configuration";
 
     enableSpansDisplays = mkOption {