feat(player-desktop): 优化注单侧栏面板折叠、隐藏首页滚动条、默认选中联赛、主页添加近期热门快速下注

apps/player/src/components/desktop/BetSlipPanel.vue

@@ -857,6 +857,16 @@ onUnmounted(() => {
   <div class="betslip-panel">
     <div class="panel-head">
       <h3>{{ t('bet.bet_slip') || '投注单' }}</h3>
+      <button
+        type="button"
+        class="panel-close-btn"
+        @click="slip.collapsePanel()"
+        :aria-label="t('common.collapse') || '折叠'"
+      >
+        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" width="16" height="16">
+          <path d="M13 17l5-5-5-5M6 17l5-5-5-5" stroke-linecap="round" stroke-linejoin="round"/>
+        </svg>
+      </button>
     </div>
 
     <div class="panel-tabs">
@@ -1173,6 +1183,24 @@ onUnmounted(() => {
   color: var(--primary-light);
 }
 
+.panel-close-btn {
+  border: none;
+  background: transparent;
+  color: var(--text-muted);
+  cursor: pointer;
+  padding: 4px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 4px;
+  transition: background 0.2s, color 0.2s;
+}
+
+.panel-close-btn:hover {
+  background: var(--bg-hover);
+  color: var(--primary);
+}
+
 .clear-slip-btn {
   background: transparent;
   border: 1px solid var(--border);