Update backend status handling and improve user notifications

- Enhanced documentation to clarify the transition from 'Idle' to 'ready (running)' for backend states, improving user understanding of system readiness.
- Updated logging messages in the notification system to reflect the new backend status terminology, ensuring accurate feedback during operations.
- Refined access link collection logic to better handle tunneled and non-tunneled scenarios, enhancing user experience.
- Improved tests to validate the new backend status handling and ensure accurate reporting of access links and notifications.

src/gpu_rent/cli.py

@@ -626,20 +626,12 @@ def up(
         )
         up_ok = True
         if no_tunnel:
-            from gpu_rent.access_card import print_access_card
-
             console.print(
                 f"[bold]готово[/bold] (без туннеля). "
-                f"UI: gpu-rent tunnel --open  |  stop: gpu-rent stop"
+                f"Доступы: gpu-rent tunnel --open  |  stop: gpu-rent stop"
             )
             if state.floating_ip:
                 console.print(f"FIP {state.floating_ip}")
-            print_access_card(
-                cfg,
-                tunneled=False,
-                host=state.floating_ip,
-                console=console,
-            )
             return
 
         if not state.floating_ip: