修复手机端双触发用户信息弹窗：名单item补touchend双击检测，消息名字加事件委托

resources/views/chat/partials/scripts.blade.php

@@ -37,6 +37,33 @@
     const onlineCount = document.getElementById('online-count');
     const onlineCountBottom = document.getElementById('online-count-bottom');
 
+    // ── 消息区：手机端双触发打开用户名片（PC 端靠 ondblclick 内联属性）──
+    // span[data-u] 由 clickableUser() 生成，touchend 委托至容器避免每条消息单独绑定
+    (function _bindMsgDoubleTap() {
+        let _lastTapTarget = null;
+        let _lastTapTime   = 0;
+
+        /** touchend 委托处理函数 */
+        function _onMsgTouch(e) {
+            const span = e.target.closest('[data-u]');
+            if (!span) return;
+            const now = Date.now();
+            if (span === _lastTapTarget && now - _lastTapTime < 300) {
+                e.preventDefault();
+                openUserCard(span.dataset.u);
+                _lastTapTarget = null;
+                _lastTapTime   = 0;
+            } else {
+                _lastTapTarget = span;
+                _lastTapTime   = now;
+            }
+        }
+
+        // 两个聊天容器（公屏 + 包厢）都绑定
+        [container, container2].forEach(c => {
+            if (c) { c.addEventListener('touchend', _onMsgTouch, { passive: false }); }
+        });
+    })();
     let onlineUsers = {};
     let autoScroll = true;
     let _maxMsgId = 0; // 记录当前收到的最大消息 ID