Client-side scoring (points badge and score tally animation) ignored
house rules that modify pair behavior. Extract shared
calculateColumnScores() helper that mirrors server logic for
eagle_eye, negative_pairs_keep_value, wolfpack, four_of_a_kind,
and one_eyed_jacks rules. Server now sends scoring_rules flags
in game state.
Also fix opponent flip animation card font-size matching.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>