Temporal Sandbox Orchestration Harness: The missing layer for running agents

What this post added

Introduces the concept of a "Sandbox Orchestration Harness" as a missing layer for agent infrastructure. Provides reference materials and community code samples for integrating sandbox providers (like Modal, E2B, Daytona) with Temporal Workflows. Details patterns for on-demand provisioning, driving execution from agent intent, persisting state across long runs, recovering from sandbox failures, and cleaning up temporary environments. Includes a Go example for provisioning a Modal sandbox with idle timeout.