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/device.js

@@ -163,13 +163,17 @@ export function FullscreenButton({ class: cls = '' }) {
   </button>`;
 }
 
-/** Only a browser-issued install offer shows a button; installed and unsupported environments stay quiet. */
-export function PwaInstallButton({ class: cls = '', size = 'sm' }) {
+/**
+ * Only a browser-issued install offer shows a button; installed and unsupported environments stay quiet.
+ * `square`: the glyph alone (the lobby's top bar, beside ⚙ / 📖), the name stays title / aria-label.
+ */
+export function PwaInstallButton({ class: cls = '', size = 'sm', square = false }) {
   const [available, setAvailable] = useState(pwaInstall.available);
   useEffect(() => pwaInstall.subscribe(setAvailable), []);
   if (!available) return null;
-  return html`<${Button} variant="secondary" size=${size} icon="download" class=${cls}
-    data-testid="pwa-install" onClick=${() => pwaInstall.request()}>${t('添加到桌面')}<//>`;
+  return html`<${Button} variant="secondary" size=${size} icon="homePlus" square=${square} class=${cls}
+    title=${t('添加到桌面')} aria-label=${t('添加到桌面')}
+    data-testid="pwa-install" onClick=${() => pwaInstall.request()}>${square ? null : t('添加到桌面')}<//>`;
 }
 
 export function updateRotateHintPwaI18n(doc = globalThis.document) {