ns1: recreate with OpenTofu workflow

Old VM had incorrect hardware-configuration.nix with hardcoded UUIDs
that didn't match actual disk layout, causing boot failure (emergency mode).

Recreated using template2-based configuration for OpenTofu provisioning.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

hosts/ns1/default.nix

@@ -2,4 +2,4 @@
   imports = [
     ./configuration.nix
   ];
-}
+}