Transforms dataset recipe images from bare filenames to full URIs
Converts recipe image sources from simple filenames (e.g., 'spaghetti_bolognese.png')
to full file system URIs (e.g., 'file:///documents/Recipedia/spaghetti_bolognese.png').
This is used during dataset initialization to ensure dataset recipes use the same
URI format as user-created recipes.
Transforms dataset recipe images from bare filenames to full URIs
Converts recipe image sources from simple filenames (e.g., 'spaghetti_bolognese.png') to full file system URIs (e.g., 'file:///documents/Recipedia/spaghetti_bolognese.png'). This is used during dataset initialization to ensure dataset recipes use the same URI format as user-created recipes.