feat(audiobook): add turbo mode for project analysis and enhance log streaming with chapter support

qwen3-tts-backend/db/database.py

@@ -1,4 +1,4 @@
-from sqlalchemy import create_engine
+from sqlalchemy import create_engine, event
 from sqlalchemy.orm import sessionmaker, declarative_base
 
 from config import settings
@@ -8,6 +8,12 @@ engine = create_engine(
     connect_args={"check_same_thread": False} if "sqlite" in settings.DATABASE_URL else {}
 )
 
+if "sqlite" in settings.DATABASE_URL:
+    @event.listens_for(engine, "connect")
+    def _set_wal(dbapi_conn, _):
+        dbapi_conn.execute("PRAGMA journal_mode=WAL")
+        dbapi_conn.execute("PRAGMA synchronous=NORMAL")
+
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
 Base = declarative_base()