- Three new Lottie companions: Wiggle Dog (摇尾狗), Butterfly (蝴蝶),
Parrot (鹦鹉). Parrot is mirrored via a new `flip` flag on Companion,
threaded through LottiePlayer (scaleX(-1)) since the asset faces left.
- Mascot size now scales with the viewport: --petal-companion-size
clamp(10rem, 17vw, 20rem); art, emoji fallback, and the sleep "z" all
derive from it.
- Larger, more legible tip bubble (1.4rem zh / 1.15rem en, wider bubble).
- Bubbles linger longer for a bilingual ESL read: baseline 9s→14s,
cheer 6s→9s, per-char 45→55ms, cap 20s→32s.
Claude-Session: https://claude.ai/code/session_016Yr6jELuRc7hyzYLccQKZd
adc0cdff1c