Flake lock file updates: • Updated input 'nixpkgs': 'github:NixOS/nixpkgs/16c7794d0a28b5a37904d55bcca36003b9109aaa' (2026-01-02) → 'github:NixOS/nixpkgs/3146c6aa9995e7351a398e17470e15305e6e18ff' (2026-01-10)