Moving the copilot-sdk cookbook content in here

cookbook/copilot-sdk/python/recipe/persisting_sessions.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+from copilot import CopilotClient
+
+client = CopilotClient()
+client.start()
+
+# Create session with a memorable ID
+session = client.create_session(
+    session_id="user-123-conversation",
+    model="gpt-5",
+)
+
+session.send(prompt="Let's discuss TypeScript generics")
+print(f"Session created: {session.session_id}")
+
+# Destroy session but keep data on disk
+session.destroy()
+print("Session destroyed (state persisted)")
+
+# Resume the previous session
+resumed = client.resume_session("user-123-conversation")
+print(f"Resumed: {resumed.session_id}")
+
+resumed.send(prompt="What were we discussing?")
+
+# List sessions
+sessions = client.list_sessions()
+print("Sessions:", [s["sessionId"] for s in sessions])
+
+# Delete session permanently
+client.delete_session("user-123-conversation")
+print("Session deleted")
+
+resumed.destroy()
+client.stop()