[Feature Request]: Migrate Node Templates to Workflows

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What would your feature do ?

This feature would remove the legacy "Node Templates" functionality and integrate it with the modern Workflows system. Currently, Node Templates allows users to save node/group selections as reusable templates (stored as JSON files), but this functionality has become obsolete since the introduction of the "workflow insert" feature.

The proposed changes would:

1. Remove "Node Templates >" from the canvas right-click menu
2. Change "Save Selected as Template" to "Save Selected as Workflow..."
3. Save the selection as a workflow that appears in the workflows sidebar
4. Provide automatic migration for existing template JSON files to workflows

This consolidation would simplify the UI and provide a more consistent user experience by having a single system for saving and reusing node configurations.

Proposed workflow

1. User selects multiple nodes on the canvas
2. Right-click → "Save Selected as Workflow..."
3. Enter a name for the workflow
4. The selection is saved as a workflow and appears in the Workflows sidebar
5. User can insert it later by:
   • Right-clicking the workflow in the sidebar → "Insert"
   • ... maybe there should be a better way for user to do this or discover how to do it

For existing users with saved templates:

1. On first launch after the update, detect existing comfy.templates.json file
2. Automatically migrate each template to a workflow (optionally in a "Migrated Templates" folder)
3. Notify user of the migration with option to review

Additional information

Related Issues: This consolidates and builds upon existing feature requests:

• #1801 - Manage node templates in workflow sidebar tab
• #1012 - Add the node templates manager to the sidebar

Technical Details:

• Node templates are currently stored in comfy.templates.json via the user data API
• Implementation is in src/extensions/core/nodeTemplates.ts
• Templates include node data and group node configurations
• The feature supports import/export of template collections

Benefits:

• Reduces UI complexity by removing redundant functionality
• Provides better discoverability (workflows sidebar is more visible than buried menu option)
• Leverages existing workflow management features (folders, search, etc.)
• Maintains backward compatibility through automatic migration

Implementation Notes:

• Migration should convert existing templates to workflow format
• Templates folder in workflows sidebar should have distinct styling
• Preserve template naming and organization during migration
• Consider adding some default/example templates for new users (as suggested in #1012)

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