feat: add KaTeX and Mermaid and computation-friendly renderer support (#4118)

* feat: add KaTeX and Mermaid support for enhanced markdown rendering in MessageList.vue

closes: #3747
- Integrated @mdit/plugin-katex and katex for LaTeX rendering.
- Added markstream-vue for improved markdown rendering capabilities.
- Updated MessageList.vue to utilize MarkdownRender component for rendering markdown content.
- Enhanced UI for dark mode compatibility across various components.
- Introduced new styles for file links, reasoning blocks, and tool call cards to improve visual consistency.

* refactor: replace markdown-it with markstream-vue for improved markdown rendering

- Removed markdown-it and related configurations from ReadmeDialog.vue, VerticalHeader.vue, and ConversationPage.vue.
- Integrated markstream-vue for enhanced markdown rendering capabilities, including support for KaTeX and Mermaid.
- Updated components to utilize MarkdownRender for rendering markdown content, improving consistency and performance.

* chore: remove deprecated markdown-it and marked dependencies from pnpm-lock.yaml

- Cleaned up pnpm-lock.yaml by removing markdown-it and marked entries, streamlining the dependency list.
- This change follows the recent integration of markstream-vue for improved markdown rendering capabilities.

* chore: remove d3 dependency and update MessageList.vue for dark mode support

- Removed d3 from package.json and commented out its import in LongTermMemory.vue to clean up unused dependencies.
- Updated MessageList.vue to ensure consistent dark mode styling by passing the isDark prop to MarkdownRender components.

* feat: add loading indicator for message retrieval in Chat and MessageList components

- Introduced a loading overlay in Chat.vue and MessageList.vue to indicate when messages are being loaded.
- Added a new `isLoadingMessages` prop to manage loading state and enhance user experience during message retrieval.
- Updated styles to ensure the loading indicator is visually integrated with the existing UI.

* feat: add provider configuration dialog to chat sidebar

- Introduced a new `ProviderConfigDialog` component for managing provider settings.
- Added a menu item in the `ConversationSidebar` to open the provider configuration dialog.
- Updated English and Chinese localization files to include translations for the new provider configuration feature.

* feat: update dashboard components and styles for improved chat experience

- Replaced font in index.html to use 'Outfit' for a fresh look.
- Changed icon in ConversationSidebar.vue to 'mdi-creation' for better representation.
- Refactored MessageList.vue to streamline loading indicators and enhance styling consistency.
- Updated localization files to change 'Provider Configuration' to 'AI Configuration' for clarity.
- Introduced new styles for loading indicators and chat mode adjustments in FullLayout.vue.
- Added functionality for toggling between bot and chat modes in the header.
- Removed deprecated sidebar item for chat navigation.

* feat: xmas easter egg

* chore: remove pnpm lock file

dashboard/src/stores/customizer.ts

@@ -9,7 +9,8 @@ export const useCustomizerStore = defineStore({
     mini_sidebar: config.mini_sidebar,
     fontTheme: "Poppins",
     uiTheme: config.uiTheme,
-    inputBg: config.inputBg
+    inputBg: config.inputBg,
+    viewMode: (localStorage.getItem('viewMode') as 'bot' | 'chat') || 'bot' // 'bot' 或 'chat'
   }),
 
   getters: {},
@@ -27,5 +28,9 @@ export const useCustomizerStore = defineStore({
       this.uiTheme = payload;
       localStorage.setItem("uiTheme", payload);
     },
+    SET_VIEW_MODE(payload: 'bot' | 'chat') {
+      this.viewMode = payload;
+      localStorage.setItem("viewMode", payload);
+    },
   }
 });