What architectural differences exist between Catalyst and Temporal for durable execution?

Catalyst is built on Dapr Workflows, which is a sidecar-based architecture integrated with other Dapr building blocks like pub/sub and state management. Temporal uses a separate workflow engine with its own history store and worker processes. Catalyst adds workload identity and MCP tool authorization as first-class components, enabling policy enforcement for AI agent tools. Temporal focuses purely on deterministic workflow execution. This makes Catalyst more suited for agentic workloads that require identity and tool governance.