Fix: 修复工具输出展开按钮无法点击的问题

- 移除内联 onclick 属性（会被 sanitizeHtml 过滤）
- 改用事件监听器处理展开/收起逻辑
- 解决了长输出时展开按钮不显示的问题

Author: heimoshuiyu

static/share.js

@@ -255,7 +255,7 @@ class ShareRenderer {
       result += `<div class="tool-label">Output`;
 
       if (isLongOutput) {
-        result += `<button class="tool-expand-btn" onclick="this.closest('.tool-output').classList.toggle('expanded')">`;
+        result += `<button class="tool-expand-btn" data-tool-id="${toolId}">`;
         result += `<span class="expand-text">Show full output (${outputLines} lines)</span>`;
         result += `<span class="collapse-text">Show less</span>`;
         result += `</button>`;
@@ -607,6 +607,18 @@ class ShareRenderer {
       });
     });
 
+    // Add event listeners for tool expand buttons
+    const expandButtons = document.querySelectorAll('.tool-expand-btn');
+    expandButtons.forEach(button => {
+      button.addEventListener('click', (e) => {
+        e.preventDefault();
+        const toolOutput = button.closest('.tool-output');
+        if (toolOutput) {
+          toolOutput.classList.toggle('expanded');
+        }
+      });
+    });
+
     // Add synchronized scrolling for diff views
     const diffScrollables = document.querySelectorAll('.diff-scrollable');
     diffScrollables.forEach(scrollable => {