批量打分接口超时时间从15s增加到180s，避免6品种同步时超时

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/backend/internal/handlers/run.go

@@ -43,7 +43,7 @@ func (d *Deps) RunPipeline(w http.ResponseWriter, r *http.Request) {
 }
 
 func (d *Deps) RunBatch(w http.ResponseWriter, r *http.Request) {
-	client := &http.Client{Timeout: 120 * time.Second}
+	client := &http.Client{Timeout: 180 * time.Second}
 	resp, err := client.Post(d.TushareURL+"/api/v1/run/batch", "application/json", nil)
 	if err != nil {
 		writeErr(w, http.StatusBadGateway, fmt.Sprintf("tushare service unavailable: %v", err))