Workflow Tab
============

Overview
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The Workflow tab provides a node-graph editor and live input/output previews.
Nodes are connected through typed sockets to build processing pipelines.

Canvas and nodes
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- Right-click on empty canvas to add nodes.
- Drag nodes to reposition them.
- Click sockets to create connections (input to output).
- Click the delete icon on a node to remove it.
- Click the help icon on a node to show its help text.

Inspecting inputs and outputs
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- Double-click a node to show its input/output preview panels.
- The top panel shows inputs; the bottom panel shows outputs.
- Drag a rectangle on a preview to zoom; right-click to reset zoom.

Saving and loading
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- Use "Save workflow" to write a JSON file in Workflows/.
- Use "Load workflow" to open an existing JSON file.
- Results are written under Results/<workflow_name>/ when a workflow is saved.
- Unsaved workflows write to a temporary Results/temp_workflow_* folder.

Related code
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- UI: diplo_lib/ui/workflow_tab/workflow_tab.py
- Graph view: diplo_lib/ui/workflow_tab/graph_vis.py
- Add-node menu: diplo_lib/ui/workflow_tab/add_node_menu.py