Building Slack agents can be easy

What this post added

Introduces the 'Slack agent skill' and 'Slack Agent Template' which automate the process of building and deploying Slack agents. This includes project setup, Slack app creation, environment configuration, local testing, and production deployment via a wizard. The skill provides pre-built tools for interacting with Slack (reading messages, fetching threads, joining channels) and integrates with the Workflow SDK for durable conversations and human-in-the-loop approvals, and AI Gateway for model selection.