added manager user type

migrations/versions/add_docupulse_settings_table.py

@@ -8,6 +8,7 @@ Create Date: 2024-03-19 10:00:00.000000
 from alembic import op
 import sqlalchemy as sa
 from datetime import datetime
+from sqlalchemy import text
 
 # revision identifiers, used by Alembic.
 revision = 'add_docupulse_settings'
@@ -28,7 +29,7 @@ def upgrade():
                        server_default='10737418240')
         
         # Check if we need to insert default data
-        result = conn.execute("SELECT COUNT(*) FROM docupulse_settings").scalar()
+        result = conn.execute(text("SELECT COUNT(*) FROM docupulse_settings")).scalar()
         if result == 0:
             conn.execute("""
                 INSERT INTO docupulse_settings (id, max_rooms, max_conversations, max_storage, updated_at)