The bot previously hallucinated when given the intent 'tap first grid item' because the visual layout and description ('photos by...') didn't semantically map to the abstract 'grid item' concept in the VLM's eyes, causing it to click the 'Search' input instead.
Fixed by:
1. Updating to generate 'tap first post' instead of 'tap first grid item', matching natural language expectations.
2. Hardening the Visual Discovery Set-of-Mark prompt in to explicitly guide the VLM on how to visually identify posts/grid items (looking for 'photos by' or 'Reel by' instead of navigation elements).
Marc Mintel
48071cc9b8