toggleFavorite's ALL-list success branch updated favoriteAction to
Starred but never touched starsCount, so a row kept showing its
pre-star count even after the server had actually accepted it. Now
increments starsCount by 1 in the same update. Also guards against a
repeat tap on an already-Starred row (the ALL list can't tell a
repo's already-starred state on load, so the star stays tappable)
double-incrementing the displayed count.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
