When CivitAI API returns meta=null and the optimized CDN image has no
embedded generation parameters (e.g. PNG tEXt chunks stripped by
Cloudflare Images), download the original image as fallback to recover
full recipe metadata (prompt, seed, LoRAs, etc.).
Also fixes Chrome password manager popping up on recipe save by adding
autocomplete="new-password" to the settings API key and proxy password
fields.