After each completed turn, a lightweight API call generates a short
follow-up question rendered as dimmed ghost text in the composer.
Tab accepts the suggestion; typing dismisses it.
- prompt_suggestion.rs: async suggestion generation via API
- app.rs: prompt_suggestion display field + suggestion_cell for
cross-thread delivery (Arc<Mutex<Option<String>>> pattern)
- widgets/mod.rs: ghost text rendered with TEXT_HINT when
input is empty and suggestion exists
- ui.rs: suggestion generation on TurnComplete, cleanup on
TurnStarted, Tab acceptance in event loop
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Punkcan Yang
02c3579be1