feat(chat): enhance chat functionality with web search and article integration

- Updated ChatMessage and ChatWindow components to support inline web search results and articles.
- Integrated new web search and RSS plugins into the chat system for real-time information retrieval.
- Enhanced useContentPanel to manage web search results alongside existing media types.
- Added ArticleOverlay component for displaying selected articles from search results.
- Improved UI elements and styles for better user interaction with web search features.

Made-with: Cursor

packages/app/src/App.vue

@@ -1,6 +1,7 @@
 <template>
   <div class="h-dvh flex flex-col" :class="currentTheme">
     <RouterView />
+    <ArticleOverlay />
   </div>
 </template>
 
@@ -8,6 +9,7 @@
 import { onMounted } from 'vue'
 import { RouterView } from 'vue-router'
 import { useTheme } from '@/composables/useTheme'
+import ArticleOverlay from '@/components/content/ArticleOverlay.vue'
 
 const { currentTheme, initTheme } = useTheme()