DROP TRIGGER IF EXISTS update_knowledge_documents_updated_at ON knowledge_documents;
DROP TRIGGER IF EXISTS update_knowledge_bases_updated_at ON knowledge_bases;
DROP TRIGGER IF EXISTS update_model_quotas_updated_at ON model_quotas;
DROP TRIGGER IF EXISTS update_model_providers_updated_at ON model_providers;
DROP TABLE IF EXISTS audit_logs;
DROP TABLE IF EXISTS knowledge_documents;
DROP TABLE IF EXISTS knowledge_bases;
DROP TABLE IF EXISTS model_quotas;
DROP TABLE IF EXISTS model_providers;