检索结果过程添加

frontend-web/src/open-canvas/api/ai-writing.ts

@@ -29,7 +29,7 @@ export async function startWritingSession(req: AIWritingRequest): Promise<string
 }
 
 const SSE_EVENT_TYPES: ProgressEventType[] = [
-  'connected', 'step_start', 'step_done',
+  'connected', 'step_start', 'step_done', 'research_progress',
   'materials_ready', 'outline_chunk', 'outline_ready',
   'draft_chunk', 'draft_ready',
   'review_chunk', 'review_item_done', 'review_ready',