Add butterfly/parrot/wiggle-dog companions; scale mascot + tips

- 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

web/src/components/Companion/LottiePlayer.tsx

@@ -11,6 +11,8 @@ interface Props {
   animationData?: object
   loop?: boolean
   className?: string
+  // Mirror the animation left↔right (for assets drawn facing the wrong way).
+  flip?: boolean
   fallback: React.ReactNode
 }
 
@@ -48,7 +50,7 @@ function fitToContent(anim: AnimationItem, svg: SVGSVGElement) {
 // A thin wrapper over lottie-web (framework-agnostic, no React peer deps, fully
 // offline). Reloads the animation whenever the data changes — moods swap by
 // passing a different `animationData`.
-export function LottiePlayer({ animationData, loop = true, className, fallback }: Props) {
+export function LottiePlayer({ animationData, loop = true, className, flip, fallback }: Props) {
   const ref = useRef<HTMLDivElement>(null)
   const anim = useRef<AnimationItem | null>(null)
 
@@ -74,5 +76,12 @@ export function LottiePlayer({ animationData, loop = true, className, fallback }
   }, [animationData, loop])
 
   if (!animationData) return <>{fallback}</>
-  return <div ref={ref} className={className} aria-hidden />
+  return (
+    <div
+      ref={ref}
+      className={className}
+      style={flip ? { transform: 'scaleX(-1)' } : undefined}
+      aria-hidden
+    />
+  )
 }

web/src/components/Companion/PetalCompanion.tsx

@@ -147,7 +147,7 @@ export function PetalCompanion({ wordCount, saveStatus, llmDown, editTick, accep
           onClick={dismiss}
           onMouseEnter={holdBubble}
           onMouseLeave={releaseBubble}
-          className="petal-bubble pointer-events-auto max-w-[260px] cursor-pointer p-3 pr-3.5"
+          className="petal-bubble pointer-events-auto max-w-[420px] cursor-pointer p-4 pr-5"
           style={{
             background: 'var(--color-surface)',
             border: '1px solid var(--color-border)',
@@ -158,10 +158,16 @@ export function PetalCompanion({ wordCount, saveStatus, llmDown, editTick, accep
           }}
           title="Click to dismiss"
         >
-          <p className="text-sm font-bold leading-snug" style={{ color: 'var(--color-plum)' }}>
+          <p
+            className="font-bold leading-snug"
+            style={{ color: 'var(--color-plum)', fontSize: '1.4rem' }}
+          >
             {bubble.zh}
           </p>
-          <p className="mt-0.5 text-xs leading-snug" style={{ color: 'var(--color-muted)' }}>
+          <p
+            className="mt-0.5 leading-snug"
+            style={{ color: 'var(--color-muted)', fontSize: '1.15rem' }}
+          >
             {bubble.en}
           </p>
         </div>
@@ -174,8 +180,9 @@ export function PetalCompanion({ wordCount, saveStatus, llmDown, editTick, accep
         aria-label="Choose a companion"
         className={`petal-companion pointer-events-auto select-none ${napping ? 'petal-companion-sleep' : ''}`}
         style={{
-          width: 144,
+          // Size scales with the viewport — see --petal-companion-size in index.css.
-          height: 144,
+          width: 'var(--petal-companion-size)',
+          height: 'var(--petal-companion-size)',
           padding: 0,
           borderRadius: 'var(--radius-pill)',
           background: 'var(--color-surface-alt)',
@@ -189,8 +196,13 @@ export function PetalCompanion({ wordCount, saveStatus, llmDown, editTick, accep
         <LottiePlayer
           key={companion.id}
           animationData={animationData}
-          className="h-32 w-32"
+          flip={companion.flip}
-          fallback={<span style={{ fontSize: 72, lineHeight: 1 }}>{MOOD_EMOJI[renderMood]}</span>}
+          className="petal-companion-art"
+          fallback={
+            <span style={{ fontSize: 'calc(var(--petal-companion-size) * 0.5)', lineHeight: 1 }}>
+              {MOOD_EMOJI[renderMood]}
+            </span>
+          }
         />
         {napping && (
           <span className="petal-zzz absolute" aria-hidden style={{ color: 'var(--color-muted)' }}>

web/src/components/Companion/companions.ts

@@ -1,6 +1,9 @@
 import type { Mood } from './useCompanion'
 import sleepingCat from './animations/sleeping-cat.json'
 import happyDog from './animations/happy-dog.json'
+import wiggleDog from './animations/wiggle-dog.json'
+import butterfly from './animations/butterfly.json'
+import parrot from './animations/parrot.json'
 
 export interface Companion {
   id: string
@@ -12,6 +15,9 @@ export interface Companion {
   // When true the mascot keeps its calm sway + drifting zzz regardless of mood
   // (e.g. a cat that's always asleep but still talks in its sleep).
   alwaysAsleep?: boolean
+  // When true the rendered animation is mirrored left↔right — for assets drawn
+  // facing the "wrong" way for our bottom-right corner (e.g. the parrot).
+  flip?: boolean
 }
 
 // The roster. Add a companion by dropping a pure-vector Lottie JSON into
@@ -44,6 +50,43 @@ export const COMPANIONS: Companion[] = [
       // no sleeping clip → stays in its idle pose instead of visibly napping
     },
   },
+  {
+    id: 'wiggle-dog',
+    name: 'Wiggle Dog',
+    zh: '摇尾狗',
+    emoji: '🐕',
+    animations: {
+      idle: wiggleDog,
+      happy: wiggleDog,
+      talking: wiggleDog,
+      celebrate: wiggleDog,
+    },
+  },
+  {
+    id: 'butterfly',
+    name: 'Butterfly',
+    zh: '蝴蝶',
+    emoji: '🦋',
+    animations: {
+      idle: butterfly,
+      happy: butterfly,
+      talking: butterfly,
+      celebrate: butterfly,
+    },
+  },
+  {
+    id: 'parrot',
+    name: 'Parrot',
+    zh: '鹦鹉',
+    emoji: '🦜',
+    flip: true, // asset faces left; mirror it to face into the page
+    animations: {
+      idle: parrot,
+      happy: parrot,
+      talking: parrot,
+      celebrate: parrot,
+    },
+  },
 ]
 
 export const DEFAULT_COMPANION = 'cat'

web/src/components/Companion/useCompanion.ts

@@ -47,10 +47,10 @@ const PROACTIVE_GAP = 40_000 // floor between any two unsolicited bubbles
 // How long a bubble lingers. These are *floors* — readBubbleMs extends them by
 // how much there is to read, since she reads both the Mandarin and the English
 // (and tips now quote a slice of her own sentence, so they run longer).
-const BUBBLE_MS = 9_000 // baseline for a tip / break
+const BUBBLE_MS = 14_000 // baseline for a tip / break
-const CHEER_MS = 6_000 // a short cheer still needs a beat in two languages
+const CHEER_MS = 9_000 // a short cheer still needs a beat in two languages
-const READ_MS_PER_CHAR = 45 // ~22 chars/sec, generous for a bilingual read
+const READ_MS_PER_CHAR = 55 // ~18 chars/sec, generous for a bilingual ESL read
-const MAX_BUBBLE_MS = 20_000 // cap so a long quote can't pin the bubble forever
+const MAX_BUBBLE_MS = 32_000 // cap so a long quote can't pin the bubble forever
 const HOVER_GRACE_MS = 3_000 // lingers this long after she stops hovering
 const now = () => Date.now()
 

web/src/index.css

@@ -319,9 +319,17 @@ button, a, input {
    The cozy corner mascot. Gently bobs while awake, settles and sways slowly
    while napping; its speech bubble pops in; little zzz drift up when asleep. */
 .petal-companion {
+  /* Mascot size scales with the viewport width: ~original on a laptop, up to
+     ~2× on a large desktop. Tune the middle (vw) term to taste. */
+  --petal-companion-size: clamp(10rem, 17vw, 20rem);
   animation: petal-bob 3.2s ease-in-out infinite;
   transition: transform 200ms ease;
 }
+/* The Lottie art sits inside the round badge with a little breathing room. */
+.petal-companion-art {
+  width: 88%;
+  height: 88%;
+}
 .petal-companion:hover {
   transform: translateY(-2px) scale(1.04);
 }
@@ -347,10 +355,10 @@ button, a, input {
 }
 
 .petal-zzz {
-  top: 6px;
+  top: calc(var(--petal-companion-size) * 0.04);
-  right: 14px;
+  right: calc(var(--petal-companion-size) * 0.1);
   font-weight: 800;
-  font-size: 1.1rem;
+  font-size: calc(var(--petal-companion-size) * 0.12);
   animation: petal-zzz 2.4s ease-in-out infinite;
 }
 @keyframes petal-zzz {