init commit

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

qwen3-tts-backend/db/database.py

@@ -0,0 +1,23 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+
+from config import settings
+
+engine = create_engine(
+    settings.DATABASE_URL,
+    connect_args={"check_same_thread": False} if "sqlite" in settings.DATABASE_URL else {}
+)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+def init_db():
+    Base.metadata.create_all(bind=engine)