refactor: fix routing, update APIs and clean up miscellaneous code

- add mitt-based event emitter utility in src/utils/events.ts
- replace deprecated navigateTo calls with vue router push across multiple components
- fix incorrect API function name (updateImageFile → uploadFile) in CreateServiceOrder
- correct typo in imported function name in AnswerComponent
- temporarily disable location fetch logic in Discovery page
- update external link token handling in LongTextGuideCardPreview

src/pages/home/components/AnswerComponent/index.vue

@@ -35,7 +35,7 @@ import ChatMarkdown from "../ChatMarkdown/index.vue";
 import ChatLoading from "../ChatLoading/index.vue";
 import StreamManager from '@/utils/StreamManager';
 import {
-  getLongTextPredivText,
+  getLongTextPreviewText,
   getLongTextValue,
   hasLongTextExtraSections,
 } from "@/constants/longTextCard";