- agent-widget.js/.css inject a floating chat HUD on every page (landing, play,
lab, deck, docs). Draggable (title bar), resizable (corner); position/size and
the full conversation persist in localStorage, so it carries across navigations.
- Same tool-loop + dual-provider (HF/OpenRouter) model picker as the full page,
in a compact ⚙ settings drawer; minimizes to a corner FAB.
- "Agent" nav links now open the HUD in place instead of navigating away.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
