Ideogram 4 Workflow + Prompt Enhancer & Prompt from Image

<p>First public 1.0 release of my Ideogram 4 EmberFrame workflow. This workflow is built around the Ideogram 4 diffusion model and the Ideogram 4 Prompt Builder KJ node. The aim is to keep the workflow simple to use: select the models once, choose one prompt source, then let the workflow route everything into the KJ prompt builder and the Engine Subgraph. It includes User Prompt enhancement, Prompt from Image, Import JSON, shared model selection, CivitAI-friendly image saving, and image metadata support.</p>

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