feat: add search and user data routes, services, and tests

tests/conftest.py

@@ -11,6 +11,7 @@ import pytest
 from fastapi.testclient import TestClient
 from sqlalchemy import create_engine, event
 from sqlalchemy.orm import DeclarativeBase, sessionmaker
+from sqlalchemy.pool import StaticPool
 
 from app.database import get_db
 from app.main import create_app
@@ -43,6 +44,7 @@ def db_engine():
     engine = create_engine(
         "sqlite:///:memory:",
         connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
     )
 
     @event.listens_for(engine, "connect")