Implements a visual workflow builder with:
- WorkflowBlockShapeUtil: Visual blocks with typed input/output ports
- WorkflowBlockTool: Click-to-place tool for adding blocks
- Block registry with 20+ blocks (triggers, actions, conditions, transformers, AI, outputs)
- Port validation and type compatibility checking
- WorkflowPropagator for real-time data flow between connected blocks
- Workflow executor for manual execution with topological ordering
- WorkflowPalette UI sidebar with searchable block categories
- JSON serialization for workflow export/import
- Workflow templates (API request, LLM chain, conditional)
Blocks are accessible via "Workflow Blocks" button in toolbar dropdown.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Jeff Emmett
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