Remove git commands from Ralph loop recipes

Git operations (commit, push) belong in the prompt instructions, not
hardcoded in the loop orchestrator. The SDK recipes should focus purely
on the SDK API: create client, create session, send prompt, destroy.

cookbook/copilot-sdk/go/ralph-loop.md

@@ -110,9 +110,7 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"os/exec"
 	"strconv"
-	"strings"
 
 	copilot "github.com/github/copilot-sdk/go"
 )
@@ -129,13 +127,9 @@ func ralphLoop(ctx context.Context, mode string, maxIterations int) error {
 	}
 	defer client.Stop()
 
-	branchOut, _ := exec.Command("git", "branch", "--show-current").Output()
-	branch := strings.TrimSpace(string(branchOut))
-
 	fmt.Println(strings.Repeat("━", 40))
 	fmt.Printf("Mode:   %s\n", mode)
 	fmt.Printf("Prompt: %s\n", promptFile)
-	fmt.Printf("Branch: %s\n", branch)
 	fmt.Printf("Max:    %d iterations\n", maxIterations)
 	fmt.Println(strings.Repeat("━", 40))
 
@@ -163,11 +157,6 @@ func ralphLoop(ctx context.Context, mode string, maxIterations int) error {
 			return err
 		}
 
-		// Push changes after each iteration
-		if err := exec.Command("git", "push", "origin", branch).Run(); err != nil {
-			exec.Command("git", "push", "-u", "origin", branch).Run()
-		}
-
 		fmt.Printf("\nIteration %d complete.\n", i)
 	}