DROP INDEX IF EXISTS idx_llm_conv_messages_conversation_id;
DROP INDEX IF EXISTS idx_llm_conv_agent_message_id;
DROP INDEX IF EXISTS idx_llm_conv_tool_calls_agent_id;
DROP INDEX IF EXISTS idx_llm_conversations_session_id;
DROP INDEX IF EXISTS idx_llm_conversations_account_id;
DROP INDEX IF EXISTS idx_llm_conv_messages_account_id;
