[httpsphl]

When a bot finishes what it was doing (its mood goes from working to idle), its mascot cheers once, for 1.2 s:

• it crouches, jumps up stretched, lands squashed and settles (squash and stretch, up eases out, the fall eases in);
• its eyes bend into two arcs smiling up, then open again from the middle like a blink.

The arcs of the smiling eyes, and of the shut eyes while asleep, now lean with the line through the open eyes (about 14 degrees, rising to the right) instead of lying level.

A mascot that shows up idle does not cheer; nor does one coming back from waiting or tired. The motion is in its own file, mascot-cheer.css (motion.css and mascot.css do not grow). Every keyframe ends at rest, so less motion, which cuts animations to their end, shows nothing. Spec 15.3 describes it.

Tests

• avatar.test.tsx: cheers on working → idle and stops after CHEER_MS; no cheer on mount or waiting → idle; each cheer animation ends at rest.
• Checked in the preview by freezing the animation at 0, 150, 360, 550, 800 and 1150 ms.

Manual check with real Claude Code

1. Send a bot a message in the app.
2. When it stops working, its mascot in the header, the sidebar and the crew card hops once and smiles.
3. With "Less motion" on, nothing moves.