feat: add frontend + backend + database to retrieve and compute news from Yahoo

frontend/src/api/summaries.ts

@@ -0,0 +1,14 @@
+import { api } from './client'
+
+export interface Summary {
+  id: string
+  user_id: string
+  content: string
+  ai_provider_id: string | null
+  generated_at: string
+}
+
+export const summariesApi = {
+  list: (limit = 10) => api.get<Summary[]>(`/summaries?limit=${limit}`),
+  generate: () => api.post<Summary>('/summaries/generate'),
+}