fix: 批量导入并发哈希并校正 CSV 行号

internal/admin/endpoints.go

@@ -649,3 +649,14 @@ func writeCSVValidationError(w http.ResponseWriter, errs []csvLineError) {
 		Data: map[string]any{"errors": errs},
 	})
 }
+
+func writeCSVConflictError(w http.ResponseWriter, errs []csvLineError) {
+	httpx.WriteJSON(w, http.StatusConflict, httpx.Envelope{
+		OK: false,
+		Error: &httpx.ErrorBody{
+			Code:    "id_taken",
+			Message: "编号已占用",
+		},
+		Data: map[string]any{"errors": errs},
+	})
+}