feat(web): Add markdown rendering support to pipeline chat messages with toggle (#1826)

* Initial plan

* Add markdown rendering support to pipeline debug dialog messages with toggle button

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Fix code review feedback: remove conflicting styles and imports

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* perf: styles

* fix: websocket message broadcasting cross-contamination between person and group channels

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

web/src/i18n/locales/zh-Hant.ts

@@ -506,6 +506,8 @@ const zhHant = {
       imageUploadFailed: '圖片上傳失敗',
       reply: '回覆',
       replyTo: '回覆給',
+      showMarkdown: '渲染',
+      showRaw: '原文',
     },
   },
   knowledge: {