vlln/dsh-autofork: Automatically Fork a Session When the Agent Is Busy

The dsh-autofork plugin resolves interaction fragmentation when an Agent is executing time-consuming tasks by using an automatic forking mechanism. When the Agent is detected as busy and unable to be interrupted, new instructions are automatically executed in background forked sessions, while the original session continues running and returns the results. Users can manage family sessions using the “Fork” tab and tools such as `fork_list` and `fork_steer`. The plugin supports configuring parameters such as fork limits and title markers, but potential risks associated with file sharing, naming restrictions, and experimental features should be noted.