Seedance Debugger

You paste in your broken prompt and describe what happened (duplicate characters, random subtitles, face drift, style switching mid-video), and it walks through a decision tree of 12 common failure modes to diagnose root cause. Then it hands back a fixed prompt with a diff table explaining each change. The methodology is extremely specific: it knows that three-view reference images cause twin cloning, that café scenes trigger storefront text, that extending videos more than a few times degrades faces into blotchy messes. Most fixes are prompt rewrites, but for things like splice jumpcuts it tells you to drop 6 frames in one clip and 1 in the other because that's the frame offset issue. Honest and procedural.