- Replaced queued-message interrupt flow with session abort calls on empty submit and escape.
- Removed interrupting state and notifyInterrupting teardown paths from abort handling.
- Updated AgentSession queue operations to use shared steering and follow-up queue views.
- Propagated isAborting through session state and collab payloads to suppress late updates.
- InputController now acknowledged empty-submit interrupts before flushing queued steering or queued-abort paths to preserve interrupting feedback.
- EventController now recreated the loading animation on interrupt acknowledgement and deferred end-of-turn teardown while queued resume recovery was still arming.
- AgentSession exposed an isResumingQueuedMessages phase around interruptAndFlushQueuedMessages so stale agent_end events no longer tear down the loader prematurely.