Hints should help identify the row actor (to find the highlighted letter),
not reveal the main actor directly. Simplified hint generation: no shared
exclusion pools needed since each row has a different actor.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Display spaces, hyphens and other non-letter characters as static cells
instead of input fields, and add separator rows in the grid for
non-alphabetic characters in the main actor's name.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
