Add calm battle feedback animations

[season179]

Summary

• add transient-overlay attack lunges, defender shakes, warm hit flashes, and floating damage numbers
• animate fainted creatures before reward, switch, or respawn flow continues
• arc capture balls into the wild creature, shake on contact, then resolve catch or break-free
• lock input in a short FX phase while preserving render() / destroyChildren rebuilding

Verification

• npm test — 529 passed
• npm run typecheck
• npm run check:metas
• Cocos Creator 3.8.8 web-mobile build — expected success exit 36
• 1280×720 local smoke with real R2 art:
  • sampled player and wild lunge positions plus defender shake/popup movement at 16 ms
  • observed ball contact before the break-free branch
  • observed faint drop/fade before the faint message and reward card
  • calm wrong-answer path remained intact
  • failed throw changed balls 3→2; potion/team unchanged; clean browser console/errors

Closes #50

[season179]

Deployed the merged client to production.

• Worker version: 31885a55-e366-4314-aa41-be800e3df3af
• Production bundle SHA-256 matches the clean build from merge commit 3a352e8: 1cc2eb15456632b041898384e4d2bc93f7a10afbbce0484b823592089d9cacd9
• https://game.pokemath.fun/login returns 200 at 1280×720
• Production bundle contains the new capture-ball and damage-popup FX markers
• Production login console/errors: clean

Pre-merge focused battle smoke covered both lunge directions, shake/popup movement, ball contact before resolution, faint-before-reward sequencing, calm wrong-answer feedback, and ball/potion/team accounting.