The structured spec approach has worked well for me — but only when the spec itself is visual, not more text. I've been designing app navigation flows as screen images with hotspot connections, then exporting that as structured markdown. The AI gets screen-by-screen context instead of one massive prompt. The difference vs writing the spec by hand is that the visual layout catches gaps (orphan screens, missing error states) before you hand anything to the LLM.

How does that work- mind sharing your workflow?