Fix(macOS): restore dblclick for MAC touch, fix scroll speed (10px→40px per notch)

server/web/index.html

@@ -3667,13 +3667,15 @@
                 // Must send first click before dblclick for Windows to recognize
                 console.log('[Touch] Double click');
                 clickAtCursor(0);  // First click
-                // dblClickAtCursor();  // Then double click
-                // 强制人工延迟 20 毫秒发送第二次标准单击
-                // 这 20ms 的延迟在操作上完全感觉不到，但对远程桌面的网络和操作系统驱动至关重要！
-                // 它能完美地把两次点击在时间线上拉开，让任何操作系统都 100% 判定这是标准的“物理鼠标双击”。
-                setTimeout(() => {
-                    clickAtCursor(0);
-                }, 20);
+                if (currentDevice && currentDevice.clientType === 'MAC') {
+                    // macOS uses a real dblclick event; two sequential clicks don't work
+                    dblClickAtCursor();  // Then double click
+                } else {
+                    // Windows/Linux: simulate physical double-click with two clicks 20ms apart
+                    setTimeout(() => {
+                        clickAtCursor(0);
+                    }, 20);
+                }
                 touchState.state = T_IDLE;
             } else if (touchState.state === T_FIRST_DOWN && !touchState.moved) {
                 // First tap released without moving = single click