fix: 将 Dify chatbot iframe URL 改为 HTTPS 避免混合内容阻止

src/views/Project/Schedule.vue

@@ -125,7 +125,7 @@ export default {
   },
   data() {
     return {
-      chatUrl: 'http://dify.seec.seecoder.cn/chatbot/h8mBtz4IQMSuT3xm',
+      chatUrl: 'https://dify.seec.seecoder.cn/chatbot/h8mBtz4IQMSuT3xm',
       loading: false,
       requirements: [],
       showRequirementDrawer: false,