feat: Add lore pack, UI adjustments, requirements.txt and INSTALL.md

app/main.py

@@ -20,7 +20,7 @@ from app.schemas import GameCheckRequest, SuggestionCreateRequest, GameStartRequ
 
 load_dotenv()
 
-app = FastAPI(title="Magisches Harry-Potter-Escape-Quiz")
+app = FastAPI(title="PotterTrivia – Das Harry-Potter-Wissensquiz")
 
 SECRET_KEY = os.getenv("SECRET_KEY", "hogwarts_secret_default_key_2026")
 app.add_middleware(SessionMiddleware, secret_key=SECRET_KEY, session_cookie="quiz_session")
@@ -154,16 +154,37 @@ async def index(request: Request, db: Session = Depends(get_db)):
         context={"question_count": active_count}
     )
 
+VALID_CATEGORIES = ["all", "books", "movies", "creatures", "spells", "characters", "hogwarts", "quidditch", "lore", "general"]
+
 @app.post("/api/game/start")
 async def start_game(payload: GameStartRequest = None, db: Session = Depends(get_db)):
     lang = payload.lang if payload and payload.lang in ["de", "en"] else "de"
     difficulty = payload.difficulty if payload and payload.difficulty in ["easy", "medium", "hard"] else "all"
+    category = payload.category if payload and payload.category in VALID_CATEGORIES else "all"
+
+    base_query = db.query(Question).filter(Question.status == "active")
+    if category != "all":
+        if category == "books":
+            cat_query = base_query.filter((Question.category == "books") | (Question.question.like("%Kröter%")))
+        else:
+            cat_query = base_query.filter(Question.category == category)
+    else:
+        cat_query = base_query
 
-    query = db.query(Question).filter(Question.status == "active")
     if difficulty != "all":
-        query = query.filter(Question.difficulty == difficulty)
+        strict_pool = cat_query.filter(Question.difficulty == difficulty).all()
+        if len(strict_pool) >= 10 or category == "all":
+            pool = strict_pool
+        else:
+            # Keep all difficulty matches in this category and top up from the same category
+            cat_all = cat_query.all()
+            strict_ids = {q.id for q in strict_pool}
+            extra = [q for q in cat_all if q.id not in strict_ids]
+            random.shuffle(extra)
+            pool = strict_pool + extra[:max(0, 10 - len(strict_pool))]
+    else:
+        pool = cat_query.all()
 
-    pool = query.all()
     if not pool:
         pool = db.query(Question).filter(Question.status == "active").all()
         if not pool:
@@ -538,7 +559,7 @@ async def submit_suggestion(payload: SuggestionCreateRequest, db: Session = Depe
                     opts.append(opt.strip())
         options_json = json.dumps(opts, ensure_ascii=False)
 
-    chosen_cat = payload.category if payload.category in ["hogwarts", "characters", "spells", "creatures", "quidditch", "lore", "general"] else "general"
+    chosen_cat = payload.category if payload.category in ["books", "movies", "hogwarts", "characters", "spells", "creatures", "quidditch", "lore", "general"] else "general"
     diff = payload.difficulty if payload.difficulty in ["easy", "medium", "hard"] else "medium"
 
     new_suggestion = Question(