Prompt Stash (Ctrl+S)

What: Save your current prompt input and retrieve it later - useful when you want to temporarily switch to a different task without losing your in-progress prompt. How to use:

# With text in prompt, press Ctrl+S to stash it
# Later, with empty prompt, press Ctrl+S to restore

Details:

• Stash indicator appears when you have a saved prompt
• First-time users see a hint after deleting significant text
• Evidence: $() function at line 21215-21220, stash hint logic at $A.current tracking