Queue new instructions instead of interrupting running agent tasks

What feature would you like to see?

Current Behavior: When the agent is running, adding a new instruction interrupts and stops the current process. To avoid this, we currently have to create a completely new session or chat to run a new instruction.

Expected Behavior: New requests should be queued instead of interrupting the active process. Once the current task finishes, the queued request should start automatically.

Additional information

This behaviour would improve workflow reliability and user experience, especially when working with long or multi-step agent tasks. It also aligns better with how task queues work in other automation and agent-based systems.