- ColosseumBattleFinishResponseDto gains get_class_experience,
class_experience, class_level. Client-safe: same BattleFinishResponsProcessing
handles all three keys as ints (decomp verified).
- ArenaColosseumBattleController.FinishInternal grants win/loss XP via
IBattleXpService with BattleXpMode.Colosseum for both /colosseum_battle/finish
and /colosseum_rank_battle/finish URLs.
- Existing win test extended: XP wire assertions + persistence check.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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