Workflow Streams: Live interactivity for agents and other applications

What this post added

Introduces Workflow Streams, a new library built on Temporal primitives (Workflows, Signals, Updates, Queries) to enable durable, real-time streaming of events within and between Temporal applications. It details the implementation using Signals for external publishing and Updates for subscriber polling, with configurable batching for responsiveness. The post also covers exactly-once semantics, handling of Continue-As-New, and integrations with AI agent SDKs and SSE for UI updates.