Prompt Queue Auto-Execution Hook

What: New hook that automatically processes queued commands when the session becomes idle.

How it works: When commands are queued (via /add-to-queue or similar), they are now automatically executed when the session is no longer busy, rather than requiring manual intervention.

Details:

• Added i59() hook at line 475244 that monitors loading state and queued commands
• Calls executeQueuedInput callback when session is idle and queue is non-empty
• Added p59() function for executing the queued input with proper state management
• Tracks execution with a ref to prevent duplicate processing
• Evidence: Hook usage at line 19833-19839 in main component