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Games now have a status/ended_reason pair. The DM can call the new end_game tool when the story reaches a real conclusion (victory, defeat, or a resolved one-shot), and the backend independently ends the game whenever a character's HP drops to 0 or below, regardless of whether the DM narrates it. The frontend shows a banner and a "Beendet" badge once a game ends. HP moves from the freeform combat_stats bag into dedicated current_hp/max_hp columns on Character, since reliably detecting 0 HP requires a real integer rather than parsing strings like "3/10" out of an LLM-authored key/value dict. Also fixed combat_stats to fully replace on each upsert instead of merging, matching its documented contract — the merge was leaving stale keys (old HP/TP text) behind after the model stopped sending them. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>