Midjourney

Build me a local image-generation studio wrapping open models, in place of Midjourney. Requirements: - A local web app (Node + Express, plain HTML/JS) on localhost:4890: prompt box, a generate-4 button, and a gallery grid of results. - Backend targets whichever engine I have: a local ComfyUI instance running Flux or SDXL if there is a GPU, otherwise a hosted API like Replicate or fal.ai (key in .env). Same UI either way. - Save every image to ~/ImageGen/YYYY-MM/ with a sidecar JSON: prompt, seed, model, steps, so any result is reproducible later. - Gallery search over past prompts via SQLite FTS5, favorites, and one-click re-run with the same seed or a new variation. - Style presets in a styles.json of prompt prefixes and suffixes I can toggle, a poor man's style reference. - No accounts, no telemetry, everything stays local except the hosted-API calls. - Out of scope: training or fine-tuning models, and matching Midjourney's look. Build for reproducibility and control, not a taste layer. - README: both engine setups, the rough cost per image on the hosted route, and a plain note that this is not Midjourney, the proprietary model and its years of aesthetic tuning cannot be rebuilt, this trades that for privacy and control.