The end-user experience piece isn't one screen, it's a full surface. Before landing on a docked side panel, I tested it against other formats, a step-by-step wizard, a command-style search bar, through user interviews, and the side panel won because it lets the agent stay present without taking over the page. Beyond the entry point, I also designed how the agent behaves and looks inside a client's product: its tone, its pacing, and the moments where it needs to act directly on the page itself rather than just talk, and how that on-page behavior and the side panel stay in sync instead of feeling like two separate tools.