Summary

• keep the Agent companion desktop pet as a single native window while shrinking it to 96x96 when no task bubbles are visible
• resize the window around the pet and task bubbles when sessions are active, preserving the user-dragged pet position instead of snapping back to the default corner
• make task bubbles clickable so they open BitFun and switch to the matching session
• show newest task bubbles at the top, oldest at the bottom, and allow scrolling after three visible bubbles

Why

The previous large transparent desktop pet window could block clicks behind it. The task bubble stack also needed stable, readable ordering and click behavior to act as a session shortcut.

Validation

• pnpm run type-check:web
• pnpm run lint:web
• pnpm --dir src/web-ui run test:run
• cargo check -p bitfun-desktop