卫戍协议：盟约 web remake — initial import

Online co-op browser remake of Arknights' Stronghold Protocol: Alliance
(client-simulated combat, official waves/bonds/items/strategies, 3D board,
facing wheel, operator loadout, official emotes, deployment scripts).

public/js/ui/rewardOverlay.js

@@ -0,0 +1,17 @@
+// Merge reward reminder (research 00 §3): the reward cards themselves live in the shop bar (shopBar.js RewardCards —
+// after a promotion they replace the bar's operator cards, like the original). When the player puts the pick off
+// (稍后选择) this pill above the bar brings the cards back; it disappears once the server clears `shop.rewardOffer`
+// (picked, or the round ended).
+
+import { html, Icon, TierChip } from './components.js';
+
+/**
+ * @param {{ priv:any, minimized:boolean, onMinimize:(m:boolean)=>void }} props
+ */
+export function RewardOverlay({ priv, minimized, onMinimize }) {
+  const offer = priv?.shop?.rewardOffer;
+  if (!offer || !Array.isArray(offer.slots) || !offer.slots.length || !minimized) return null;
+  return html`<button type="button" class="rewardpill" onClick=${() => onMinimize(false)}>
+    <${Icon} name="crown" /><span>晋升奖励待选择</span><${TierChip} tier=${offer.tier || 1} size="sm" />
+  </button>`;
+}