landrun: add git

modules/flake-parts/claude-sandboxed.nix

@@ -11,6 +11,7 @@ in
       program = "${pkgs.claude-code}/bin/claude";
       imports = [
         landrunModules.gh
+        landrunModules.git
       ];
       features = {
         tty = true;

modules/home/claude-code/default.nix

@@ -45,6 +45,10 @@ in
       - Don't say "First, " say "Indeed, "
       - Don't say "Good" or "Perfect" say "Excelsior"
       - Don't say "Let me fix them", say "The game is afoot"
+
+      # Tools
+
+      - **gh**: If `gh` is unavailable, get it from nixpkgs, viz.: `nix run nixpkgs#gh`.
     '';
 
     # Automatically discovered commands from commands/ directory