* feat(ui): animated Clawd mascot on the new-session welcome hero
Ports the native mascot to the Control UI as a canvas-backed
<openclaw-mascot> Lit component: exact 120x120 vector geometry, mood
loops (idle/curious/thinking/working/happy/celebrating/sad/sleepy/
attentive), deterministic seeded animator, DPR-aware rendering,
visibility-paused rAF, theme-reactive palette, and a reduced-motion
static pose. The new-session welcome hero swaps its static lobster
sprite for the living mascot.
* fix(ui): cancel stale mascot gestures on mood change
* fix(ui): keep MascotEffect internal to the pose module
* test(lint): allowlist the canvas fill suppression for the web mascot
a0d6cd724a