feat(home): add lem CLI via flake input

home/cli.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, inputs, ... }:
 {
   # Universal CLI tools for all hosts
   home.packages = with pkgs; [
@@ -47,6 +47,9 @@
     # Python (системный 3.9 macOS — слишком старый; ставим 3.13 через nix)
     python313
     uv
+
+    # Personal CLIs (from own flake inputs)
+    inputs.lem.packages.${pkgs.system}.default
   ];
 
   # TODO: global npm/pnpm packages not managed by nix for now