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/composables/useWebSearch.ts

@@ -0,0 +1,30 @@
+export interface WebSearchResult {
+  title: string
+  url: string
+  content?: string
+  imgSrc?: string
+}
+
+export async function searchWeb(query: string): Promise<WebSearchResult[]> {
+  if (!query.trim()) return []
+  try {
+    const params = new URLSearchParams({ q: query.trim() })
+    const res = await fetch(`/api/web-search?${params}`, { signal: AbortSignal.timeout(10000) })
+    if (!res.ok) {
+      const body = await res.text().catch(() => '')
+      console.warn('[AIUI web-search]', res.status, body)
+      return []
+    }
+    const data = (await res.json()) as { results?: Array<WebSearchResult & { imgSrc?: string }>; error?: string }
+    if (data.error) {
+      console.warn('[AIUI web-search]', data.error)
+      return []
+    }
+    const results = data.results ?? []
+    console.log('[AIUI web-search]', query.slice(0, 50), '→', results.length, 'results')
+    return results
+  } catch (err) {
+    console.warn('[AIUI web-search] failed:', err)
+    return []
+  }
+}