fix(web): improve touch double-click reliability across platforms

Increase touch move threshold to prevent accidental drag detection.

Simulate physical double-click with two sequential click events and a 20ms delay instead of using non-standard dblclick event.

Fix folder renaming and unresponsiveness issues on Windows, Linux, and macOS.

server/web/index.html

@@ -3129,7 +3129,7 @@
             const totalDist = Math.sqrt(totalDx * totalDx + totalDy * totalDy);
 
             // Different thresholds for different states
-            const moveThreshold = (touchState.state === T_SECOND_DOWN) ? 10 : 20;
+            const moveThreshold = (touchState.state === T_SECOND_DOWN) ? 22 : 20;
 
             if (totalDist > moveThreshold && !touchState.moved) {
                 touchState.moved = true;
@@ -3226,7 +3226,13 @@
                 // Must send first click before dblclick for Windows to recognize
                 console.log('[Touch] Double click');
                 clickAtCursor(0);  // First click
-                dblClickAtCursor();  // Then double 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);
                 touchState.state = T_IDLE;
             } else if (touchState.state === T_FIRST_DOWN && !touchState.moved) {
                 // First tap released without moving = single click