Playtest #3 fixes: lost models, picking, live LP, temp overflow, 蕾缪安 S3, 回环射手, FX, detail card, spinners

- #1 lost operator models: the Spine store no longer hands out a skeleton whose unload is in flight
  (PIXI.Assets.unload is async); eviction runs 1 s after a release and the empty-scene budget only after 3 s
- #7 picking: one shared rule (render/pick.js, pixel probe where bodies overlap) for prep/battle clicks,
  hover, the enemy pen and equipment drops; the drag ghost stands on its drop tile; hover probes capped
  at one per frame
- #2 the top-bar LP drops live as the own battle's enemies enter the blue gate (−N, 联防中), teammates'
  pending LP in the team panel
- #3 temp overflow pieces that arrive after a prep deadline survive through the next prep (tempDue);
  temp-row warning and ready-button reason
- #4 蕾缪安 S3: locks every 0.5 s, then one shell every 0.3 s in lock order (PRTS notes), bombardShell fx
- #5 回环射手: real boomerang (out 15, back 3.75 tiles/s, attack only when every boomerang is caught)
- #6 visible projectiles, muzzle flashes, slashes, skill bursts and auras at unchanged frame cost
- #8 特质 right under the detail card header, with its official type icon
- #9 no spinning busy cursors / spinners next to texts; game data warmed before the match
- docs, recordings and tests updated (2414 unit tests, all browser suites green)

public/js/ui/choiceOverlay.js

@@ -1,9 +1,11 @@
 // 机变 draft overlay (research 06 §4.4 / §11.5): family title | description, "倒计时结束后仍未选定将自动分配",
 // whose turn ("当前轮到你决策" / "{name} 正在决策…") with countdown, pick order with ✓ / ⌛ / … / door,
 // and a 3×2 grid (solo: 3 cards) of cards with icon, title, rich description, tier chip and the taker's
-// avatar badge. Clicking an available card on your turn sends g.choice.
+// avatar badge. Clicking an available card on your turn sends g.choice; while it is in flight the card shows a
+// "选择中" strip with a sweeping bar (never a spinner over its text — user playtest #3 item 9), dropped as soon as the
+// pick shows in m.public (spBusy itself resets when the request settles, ≤ 8 s, or the phase moves on).
 
-import { html, Icon, TierChip, Countdown, MicroLabel, Spinner } from './components.js';
+import { html, Icon, TierChip, Countdown, MicroLabel } from './components.js';
 import { Img, RichText, PlayerAvatar, GIcon } from './gameComponents.js';
 import { itemIconUrl, enemyIconUrl, uiUrl } from './assetUrls.js';
 import { richTextPlain } from './richText.js';
@@ -47,6 +49,15 @@ export function resolveSpCard(card, family) {
   };
 }
 
+/**
+ * Whether a card shows the in-flight pick (g.choice sent, no answer yet): only until the pick lands in m.public — the
+ * player's pick is known or the card is taken — so it can never outlive the request's effect.
+ * @param {number|null} busyIdx @param {{ idx: number, takenBy?: string|null }} card @param {number|null|undefined} mine
+ */
+export function pickBusy(busyIdx, card, mine) {
+  return busyIdx != null && !!card && busyIdx === card.idx && mine == null && !card.takenBy;
+}
+
 /**
  * @param {{ pub:any, sp:any, myId:string, solo:boolean, onPick:(idx:number)=>void, busyIdx?:number|null, total?:number|null }} props
  */
@@ -94,7 +105,9 @@ export function ChoiceOverlay({ pub, sp, myId, solo, onPick, busyIdx = null, tot
           const r = resolveSpCard(card, sp.family);
           const taker = card.takenBy ? players.get(card.takenBy) : null;
           const can = myTurn && mine == null && !card.takenBy && busyIdx == null;
-          return html`<button key=${card.idx} type="button" class=${cx('spcard', `spcard--${r.kind}`, card.takenBy && 'is-taken', card.takenBy === myId && 'is-mine', can && 'is-pickable', busyIdx === card.idx && 'is-busy')}
+          const busy = pickBusy(busyIdx, card, mine);
+          return html`<button key=${card.idx} type="button" class=${cx('spcard', `spcard--${r.kind}`, card.takenBy && 'is-taken', card.takenBy === myId && 'is-mine', can && 'is-pickable', busy && 'is-busy')}
+              aria-busy=${busy ? 'true' : undefined}
               disabled=${!can} onClick=${() => can && onPick(card.idx)} aria-label=${r.name} title=${`${r.name}\n${richTextPlain(r.desc)}`}>
             <span class="spcard__glow" aria-hidden="true"></span>
             ${r.tier ? html`<${TierChip} tier=${r.tier} size="md" class="spcard__tier" />` : null}
@@ -108,7 +121,7 @@ export function ChoiceOverlay({ pub, sp, myId, solo, onPick, busyIdx = null, tot
               </span>
             </span>
             ${taker ? html`<span class="spcard__taker" title=${`${taker.name} 已选择`}><${PlayerAvatar} player=${taker} size="sm" /><span>${card.takenBy === myId ? '你' : taker.name}</span></span>` : null}
-            ${busyIdx === card.idx ? html`<span class="spcard__spin"><${Spinner} size="sm" /></span>` : null}
+            ${busy ? html`<span class="spcard__busy" role="status">选择中</span>` : null}
           </button>`;
         })}
       </div>