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/python/ralph-loop.md

@@ -85,7 +85,6 @@ The full Ralph pattern with planning and building modes, matching the [Ralph Pla
 
 ```python
 import asyncio
-import subprocess
 import sys
 from pathlib import Path
 
@@ -97,14 +96,9 @@ async def ralph_loop(mode: str = "build", max_iterations: int = 50):
     client = CopilotClient()
     await client.start()
 
-    branch = subprocess.check_output(
-        ["git", "branch", "--show-current"], text=True
-    ).strip()
-
     print("━" * 40)
     print(f"Mode:   {mode}")
     print(f"Prompt: {prompt_file}")
-    print(f"Branch: {branch}")
     print(f"Max:    {max_iterations} iterations")
     print("━" * 40)
 
@@ -125,16 +119,6 @@ async def ralph_loop(mode: str = "build", max_iterations: int = 50):
             finally:
                 await session.destroy()
 
-            # Push changes after each iteration
-            try:
-                subprocess.run(
-                    ["git", "push", "origin", branch], check=True
-                )
-            except subprocess.CalledProcessError:
-                subprocess.run(
-                    ["git", "push", "-u", "origin", branch], check=True
-                )
-
             print(f"\nIteration {i} complete.")
 
         print(f"\nReached max iterations: {max_iterations}")