0.2.4-dev: round-29 community fixes and the official shared card pool

- Shared card pool and item stock as in the official mode (the owner's request, from the 路标档案馆 video and public notes): solo low-tier exceptions, co-op operators x2, shared item stock with special-item exceptions, normal / advanced occupancy 1 / 2, re-check on buy, 机变 exhaustion, release on consume / destroy / elimination; 整备 never exceeds stock; invariant held <= cap.
- 突袭: one taunt-first reselect right after a revive (the owner's rule); ordinary polls and redeploys keep the 0.2.3 rule; a revive on an enemy's tile stays. #475: online boss / hidden-boss Raid may land on the empty half (owner-limited scope).
- 浊心斯卡蒂 S1 x 坚守 no longer bounce redirected damage, and the two shares conserve the hit (idea of PR #464 by @HappyTanuki).
- Operator fixes adapted from PRs by @Xinglan233 (#459 哈洛德 S2 elemental trigger, #460 涤火杰西卡 shield on the four adjacent tiles, #461 家族徽章 first hit after stealth, #462 松果 S2 regrow per deploy); 克莱门莎 S2 splash 1.1 / 100% ATK and air auto-trigger (#467); 白面 copying 歌蕾蒂娅 / 余 skips the three-member condition (#473, the owner's video).
- 香槟炸弹 is not chosen by friendly auras / heals (PR #468 / #476 by @Siornya); 琳琅诗怀雅 coin balance (PR #450 by @IceCodeNew); Touch prep display (PR #451 by @YinqiMargatroid); lobby header (PR #471 by @YuriRestia); Japanese UI terms (PR #448 by @scutkane).
- AI-only boss countdown grace, render-failure cache / recovery without restarting a battle, device units kept on a same-field re-entry, DIY detail / skill previews, large-text result buttons.
- golden: battle families equal 0.2.3 except diy-135 / diy-136 (克莱门莎); all 18 release matches move through the shared pool, every flip named in docs/history/0.2.4.md §29.12; two coverage scenarios added.

public/js/ui/settings.js

@@ -289,11 +289,12 @@ export function SettingsModal({ open, onClose }) {
  * The 设置 button of the lobby and the room (GitHub #238 — before it the settings were reachable only from the title
  * screen and a running match): the twin of the 玩法说明 button (ui/guide.js GuideButton), with the settings modal behind it
  * (mounted only while open). The same modal as the title screen's and the match's: nothing in it is match-only.
- * @param {{ class?: string, size?: 'sm'|'md'|'lg'|'xl', variant?: string, label?: string }} props
+ * `square`: the gear alone (the lobby's top bar), the name stays title / aria-label — like GuideButton's.
+ * @param {{ class?: string, size?: 'sm'|'md'|'lg'|'xl', variant?: string, label?: string, square?: boolean }} props
  */
-export function SettingsButton({ class: cls, size = 'sm', variant = 'ghost', label = t('设置') }) {
+export function SettingsButton({ class: cls, size = 'sm', variant = 'ghost', label = t('设置'), square = false }) {
   const [open, setOpen] = useState(false);
-  return html`<${Button} variant=${variant} size=${size} class=${cx('settings-btn', cls)} onClick=${() => setOpen(true)}
-      title=${t('设置')} aria-label=${t('设置')} data-testid="settings-btn"><${GIcon} name="gear" class="btn__icon" />${label}<//>
+  return html`<${Button} variant=${variant} size=${size} square=${square} class=${cx('settings-btn', cls)} onClick=${() => setOpen(true)}
+      title=${t('设置')} aria-label=${t('设置')} data-testid="settings-btn"><${GIcon} name="gear" class="btn__icon" />${square ? null : label}<//>
     ${open ? html`<${SettingsModal} open=${true} onClose=${() => setOpen(false)} />` : null}`;
 }