Add final results modal, active rules display, and UI improvements

- Add big final results modal at game end with rankings and share button
- Add active rules bar showing enabled variants during gameplay
- Increase spacing between player cards and opponents row
- Add Wolfpack bonus rule (2 pairs of Jacks = -5 pts)
- Change joker options to radio buttons (None/Standard/Lucky Swing/Eagle-Eye)
- Update Eagle-Eye jokers: +2 pts unpaired, -4 pts paired
- Add card flip animation on discard pile
- Redesign waiting room layout with side-by-side columns
- Style card backs with red Bee-style diamond crosshatch pattern
- Compact standings panel to show top 4 per category
- Various CSS polish and responsive improvements

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/test_maya_bug.py

@@ -145,7 +145,7 @@ class TestMayaBugFix:
         When forced to swap (drew from discard), the AI should use
         get_ai_card_value() to find the worst card, not raw value().
 
-        This matters for house rules like super_kings, lucky_sevens, etc.
+        This matters for house rules like super_kings, ten_penny, etc.
         """
         game = create_test_game()
         game.options = GameOptions(super_kings=True)  # Kings now worth -2