Add task runner with workflows integration guide

Documents how to integrate Cloudflare Workflows with Agents SDK for running long-running background tasks. Covers both quick analysis (Agent-based) and deep analysis (Workflow-based) patterns with real-time progress tracking.

Based on PR #683: add task management and workflow integration
cloudflare/agents#683

Generated with Claude Code https://claude.com/claude-code

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: github-actions[bot]

src/content/docs/agents/api-reference/run-workflows.mdx

@@ -106,3 +106,7 @@ You can also call a Workflow that is defined in a different Workers script from
 </WranglerConfig>
 
 Refer to the [cross-script calls](/workflows/build/workers-api/#cross-script-calls) section of the Workflows documentation for more examples.
+
+## Complete example
+
+For a complete example showing how to build a Task Runner Agent with Workflow integration, including progress tracking and real-time updates, refer to [Build a Task Runner with Workflows](/agents/guides/task-runner-workflows/).