feat: use home-manager colima service module (#369)

Replace manual colima/docker package installation with the upstream
home-manager services.colima module, which manages the launchd agent,
docker context, and config file declaratively.

Closes #289

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: stackptr

modules/home/development.nix

@@ -199,11 +199,24 @@ in {
 
     (mkIf cfg.containers.enable {
       home.packages = with pkgs; [
-        colima
-        docker
         lazydocker
       ];
 
+      services.colima = {
+        enable = true;
+        profiles.default = {
+          isActive = true;
+          isService = true;
+          settings = {
+            cpu = 4;
+            disk = 60;
+            memory = 8;
+            arch = "aarch64";
+            mountInotify = true;
+          };
+        };
+      };
+
       programs.ssh.includes = [
         "~/.colima/ssh_config"
       ];