fix: 修复Agent执行历史为空的问题

- 在Agent初始化时添加示例执行历史
- 添加触发示例动作和清空历史的功能
- 完善Agent执行历史的显示界面
- 添加执行历史的操作按钮（触发示例、刷新、清空）
- 优化执行历史的显示格式，包括优先级、置信度、执行时间等
- 修复前端Agent数据加载逻辑

src/web/static/js/dashboard.js

@@ -615,7 +615,7 @@ class TSPDashboard {
                 this.updateToolsList(data.tools || []);
                 
                 // 更新执行历史
-                this.updateExecutionHistory(data.execution_history || []);
+                this.updateAgentExecutionHistory(data.execution_history || []);
             }
         } catch (error) {
             console.error('加载Agent数据失败:', error);
@@ -2009,6 +2009,136 @@ class TSPDashboard {
         window.print();
     }
 
+    // Agent执行历史相关功能
+    async refreshAgentHistory() {
+        try {
+            const response = await fetch('/api/agent/action-history?limit=20');
+            const data = await response.json();
+            
+            if (data.success) {
+                this.updateAgentExecutionHistory(data.history);
+                this.showNotification(`已加载 ${data.count} 条执行历史`, 'success');
+            } else {
+                throw new Error(data.error || '获取执行历史失败');
+            }
+        } catch (error) {
+            console.error('刷新Agent历史失败:', error);
+            this.showNotification('刷新Agent历史失败: ' + error.message, 'error');
+        }
+    }
+
+    async triggerSampleAction() {
+        try {
+            const response = await fetch('/api/agent/trigger-sample', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                }
+            });
+            const data = await response.json();
+            
+            if (data.success) {
+                this.showNotification(data.message, 'success');
+                // 刷新执行历史
+                await this.refreshAgentHistory();
+            } else {
+                throw new Error(data.error || '触发示例动作失败');
+            }
+        } catch (error) {
+            console.error('触发示例动作失败:', error);
+            this.showNotification('触发示例动作失败: ' + error.message, 'error');
+        }
+    }
+
+    async clearAgentHistory() {
+        if (!confirm('确定要清空Agent执行历史吗？此操作不可恢复。')) {
+            return;
+        }
+        
+        try {
+            const response = await fetch('/api/agent/clear-history', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                }
+            });
+            const data = await response.json();
+            
+            if (data.success) {
+                this.showNotification(data.message, 'success');
+                // 清空显示
+                this.updateAgentExecutionHistory([]);
+            } else {
+                throw new Error(data.error || '清空历史失败');
+            }
+        } catch (error) {
+            console.error('清空Agent历史失败:', error);
+            this.showNotification('清空Agent历史失败: ' + error.message, 'error');
+        }
+    }
+
+    updateAgentExecutionHistory(history) {
+        const container = document.getElementById('agent-execution-history');
+        
+        if (!history || history.length === 0) {
+            container.innerHTML = `
+                <div class="empty-state">
+                    <i class="fas fa-history"></i>
+                    <p>暂无执行历史</p>
+                </div>
+            `;
+            return;
+        }
+
+        const historyHtml = history.map(record => {
+            const startTime = new Date(record.start_time * 1000).toLocaleString();
+            const endTime = new Date(record.end_time * 1000).toLocaleString();
+            const duration = Math.round((record.end_time - record.start_time) * 100) / 100;
+            
+            const priorityColor = {
+                5: 'danger',
+                4: 'warning', 
+                3: 'info',
+                2: 'secondary',
+                1: 'light'
+            }[record.priority] || 'secondary';
+            
+            const confidenceColor = record.confidence >= 0.8 ? 'success' : 
+                                  record.confidence >= 0.5 ? 'warning' : 'danger';
+            
+            return `
+                <div class="card mb-2">
+                    <div class="card-body">
+                        <div class="d-flex justify-content-between align-items-start">
+                            <div class="flex-grow-1">
+                                <h6 class="mb-1">${record.description}</h6>
+                                <div class="d-flex gap-3 mb-2">
+                                    <span class="badge bg-${priorityColor}">优先级 ${record.priority}</span>
+                                    <span class="badge bg-${confidenceColor}">置信度 ${(record.confidence * 100).toFixed(0)}%</span>
+                                    <span class="badge bg-${record.success ? 'success' : 'danger'}">${record.success ? '成功' : '失败'}</span>
+                                </div>
+                                <small class="text-muted">
+                                    <i class="fas fa-clock me-1"></i>开始: ${startTime} | 
+                                    <i class="fas fa-stopwatch me-1"></i>耗时: ${duration}秒
+                                </small>
+                            </div>
+                            <div class="ms-3">
+                                <span class="badge bg-primary">${record.action_type}</span>
+                            </div>
+                        </div>
+                        ${record.result && record.result.message ? `
+                            <div class="mt-2">
+                                <small class="text-muted">结果: ${record.result.message}</small>
+                            </div>
+                        ` : ''}
+                    </div>
+                </div>
+            `;
+        }).join('');
+
+        container.innerHTML = historyHtml;
+    }
+
     // 更新分析报告
     updateAnalyticsReport(data) {
         const reportContainer = document.getElementById('analytics-report');