fix(build): add curl and git to Nix shell dependencies

These are needed inside the Nix FHS environment for depot_tools
bootstrapping (curl) and CMake ExternalProject downloads (git).

Author: kevindhanna

shell.nix

@@ -23,6 +23,8 @@ let
         nativeBuildInputs =
           (with pkgs; [
             cmake
+            curl
+            git
             ninja
             nodejs_24
             pkg-config