Implements structured choice cards for the v0.8.43 truth-surface tracker.
When Brother Whale needs user input, it surfaces a bordered card with:
- A question prompt
- Numbered options with (default) marker
- Arrow/j/k navigation and 1-9 number-key shortcuts
- Enter to confirm, Esc to cancel
- Decision results surfaced as status messages
The widget compiles and the keyboard routing is wired into the main
event loop. Rendering overlay wire-up follows in the next commit.
Hunter Bown
cdafc37a2f