optimize db connection

requirements.txt

@@ -1,6 +1,7 @@
 aiohappyeyeballs==2.6.1
 aiohttp==3.13.3
 aiosignal==1.4.0
+aiosqlite==0.22.1
 annotated-doc==0.0.4
 annotated-types==0.7.0
 anyio==4.12.1
@@ -38,6 +39,7 @@ google-crc32c==1.8.0
 google-genai==1.63.0
 google-resumable-media==2.8.0
 googleapis-common-protos==1.72.0
+greenlet==3.3.1
 grpc-google-iam-v1==0.14.3
 grpcio==1.78.0
 grpcio-status==1.78.0