docs(README): make quickstart fully self-contained

Author: tony

README.md

@@ -82,28 +82,31 @@ libtmux==0.49.*
 libtmux = "0.49.*"
 ```
 
-## Quickstart
+## 🚀 Quickstart
 
-Create and drive a tmux session from Python.
-
-```console
-tmux new-session -s demo -n main
-```
+Create and drive a tmux session entirely from Python.
 
 ```python
 import libtmux
+import time
 
+# Connect to the server (starts one if not running)
 server = libtmux.Server()
-session = server.sessions.get(session_name="demo")
 
-window = session.new_window(attach=False, window_name="workspace")
+# Use a unique name to avoid conflicts if you run this multiple times
+session_name = f"libtmux-demo-{int(time.time())}"
+
+# Create the session and the initial window
+session = server.new_session(session_name=session_name, window_name="workspace")
+
+window = session.active_window
 left = window.active_pane
 right = window.split_window(vertical=True)
 
 left.send_keys("vim", enter=True)
 right.send_keys("htop", enter=True)
 
-print(f"Attach with: tmux attach -t {session.name}")
+print(f"✅ Session ready. Attach with: tmux attach -t {session_name}")
 ```
 
 ## Core concepts