Add final report download button (#329)

* fix(app): 改进应用健康检查机制并更新默认配置

添加专用的健康检查路径和代理配置，重构健康检查URL构建逻辑
增加健康检查失败时的日志记录
延长应用启动等待时间至90秒

* style(templates): 统一CSS选择器缩进格式并修复空格问题

* feat(报告下载): 实现报告文件下载功能并增强任务状态管理

- 在ReportAgent中修改generate_report返回包含文件路径的字典
- 在ReportTask中添加文件路径相关字段
- 新增/download接口用于下载报告文件
- 在前端添加下载按钮及相关控制逻辑
- 完善任务状态显示，增加文件路径信息

* feat(report): 添加报告下载功能并优化状态管理

- 在ReportAgent中返回报告文件保存路径信息
- 新增Flask接口/download/<task_id>用于下载报告文件
- 在前端添加下载按钮及相关控制逻辑
- 修复报告生成状态重置问题
- 优化健康检查URL构建和代理设置
- 统一CSS样式中的空格和缩进

---------

Co-authored-by: HKLHaoBin <we3q@qq.com>
Co-authored-by: Zhang Yuxiang <51037789+NTFago@users.noreply.github.com>

app.py

@@ -656,6 +656,14 @@ def stop_streamlit_app(app_name):
     except Exception as e:
         return False, f"停止失败: {str(e)}"
 
+HEALTHCHECK_PATH = "/_stcore/health"
+HEALTHCHECK_PROXIES = {'http': None, 'https': None}
+
+
+def _build_healthcheck_url(port):
+    return f"http://127.0.0.1:{port}{HEALTHCHECK_PATH}"
+
+
 def check_app_status():
     """检查应用状态"""
     for app_name, info in processes.items():
@@ -663,21 +671,24 @@ def check_app_status():
             if info['process'].poll() is None:
                 # 进程仍在运行，检查端口是否可访问
                 try:
-                    response = requests.get(f"http://localhost:{info['port']}", timeout=2)
+                    response = requests.get(
+                        _build_healthcheck_url(info['port']),
+                        timeout=2,
+                        proxies=HEALTHCHECK_PROXIES
+                    )
                     if response.status_code == 200:
                         info['status'] = 'running'
                     else:
                         info['status'] = 'starting'
-                except requests.exceptions.RequestException:
-                    info['status'] = 'starting'
-                except Exception:
+                except Exception as exc:
+                    logger.warning(f"{app_name} 健康检查失败: {exc}")
                     info['status'] = 'starting'
             else:
                 # 进程已结束
                 info['process'] = None
                 info['status'] = 'stopped'
 
-def wait_for_app_startup(app_name, max_wait_time=30):
+def wait_for_app_startup(app_name, max_wait_time=90):
     """等待应用启动完成"""
     import time
     start_time = time.time()
@@ -690,15 +701,19 @@ def wait_for_app_startup(app_name, max_wait_time=30):
             return False, "进程启动失败"
         
         try:
-            response = requests.get(f"http://localhost:{info['port']}", timeout=2)
+            response = requests.get(
+                _build_healthcheck_url(info['port']),
+                timeout=2,
+                proxies=HEALTHCHECK_PROXIES
+            )
             if response.status_code == 200:
                 info['status'] = 'running'
                 return True, "启动成功"
-        except:
-            pass
-        
+        except Exception as exc:
+            logger.warning(f"{app_name} 健康检查失败: {exc}")
+
         time.sleep(1)
-    
+
     return False, "启动超时"
 
 def cleanup_processes():
@@ -1042,4 +1057,4 @@ if __name__ == '__main__':
         logger.info("\n正在关闭应用...")
         cleanup_processes()
         
-    
+