Remove deprecated file.

README.md

@@ -42,7 +42,6 @@ Each layer extends the previous one, inheriting all configurations. Hosts select
 │   ├── desktop-node.nix      # Desktop layer: GUI environment
 │   ├── cloud-node.nix        # Cloud VPS profile
 │   ├── compute-node.nix      # Nomad worker profile
-│   ├── base-node.nix         # [DEPRECATED] Alias for cluster-node
 │   └── [feature modules]     # Individual feature configs
 ├── hosts/
 │   ├── c1/                   # Compute node 1

common/base-node.nix

@@ -1,8 +0,0 @@
-{ pkgs, ... }:
-{
-  # DEPRECATED: Use cluster-node.nix for cluster nodes or minimal-node.nix for minimal systems
-  # This file is kept for backward compatibility with existing configurations
-  imports = [
-    ./cluster-node.nix
-  ];
-}