解决已发现问题

core/frontend/src/components/omni-param-bar.tsx

@@ -24,6 +24,19 @@ function withCurrent(values: string[], current: string) {
   return current && !values.includes(current) ? [current, ...values] : values;
 }
 
+/** 同一秒数允许「8秒 / 8 秒」等历史格式共存，不因展示格式触发参数变更。 */
+export function normalizeDurationValue(value: string): string {
+  const raw = String(value || "").trim();
+  const seconds = raw.match(/\d+(?:\.\d+)?/)?.[0];
+  if (seconds) return `seconds:${Number(seconds)}`;
+  return `label:${raw.replace(/\s+/g, "").toLowerCase()}`;
+}
+
+function includesDuration(values: string[], current: string): boolean {
+  const normalized = normalizeDurationValue(current);
+  return values.some((value) => normalizeDurationValue(value) === normalized);
+}
+
 function modelOptionLabel(config: ModelConfig): string {
   return (config.display_name || config.name || "").trim();
 }
@@ -187,7 +200,7 @@ export function OmniParamBar({
     const seconds = Number(String(duration || "").replace(/\D/g, ""));
     const isPlannedSegmentedDuration = seconds > 30 && seconds <= 60 && canCreateSegmentedVideo(selected, model);
     // 60 秒是总时长，生成时会拆段；不要因为单段目录最高 30 秒就把它偷偷改回 8 秒/智能时长。
-    if (duration && duration !== "智能时长" && !nextDur.includes(duration) && !isPlannedSegmentedDuration) {
+    if (duration && duration !== "智能时长" && !includesDuration(nextDur, duration) && !isPlannedSegmentedDuration) {
       onDuration(nextDur.includes("8 秒") ? "8 秒" : (nextDur.find((x) => x !== "智能时长") || "智能时长"));
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps