Stop DM from re-asking setup questions already answered in the wizard

run_dm_turn now loads the game's name/description into the system
prompt on every turn, and the Session-0 instructions tell the DM to
check those framing details first and skip re-asking genre/world,
scope, or experience level when they're already covered there —
only the still-open points (player count, characters, rule-depth
preference, content boundaries) get asked.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/app/llm/orchestrator.py

@@ -8,6 +8,7 @@ from app.config import settings
 from app.llm.client import get_dm_system_prompt, get_llm_client
 from app.llm.context import build_context
 from app.llm.tools import character_sheet, dice
+from app.models.game import Game
 from app.models.message import Message
 from app.rag.retrieval import build_rag_block
 
@@ -45,6 +46,15 @@ async def run_dm_turn(
     client = get_llm_client()
     system_prompt = get_dm_system_prompt()
 
+    game = await session.get(Game, game_id)
+    if game is not None:
+        system_prompt = (
+            f"{system_prompt}\n\n"
+            "Spiel-Rahmendaten (vom Ersteller beim Anlegen bereits festgelegt — NICHT erneut "
+            "abfragen, in Session 0 höchstens knapp bestätigen):\n"
+            f"Name: {game.name}\nBeschreibung: {game.description}"
+        )
+
     if latest_player_message:
         rag_block = await build_rag_block(session, latest_player_message)
         if rag_block: