fix: formatDuration 不取整导致显示浮点数秒（如 9.542993秒）

全局搜索发现 4 处 formatDuration 函数中 seconds % 60 未做取整，
当后端返回浮点数 total_duration 时直接拼接显示。

修复：先 Math.round(seconds) 再取模，影响页面：
- 剪辑计划列表页（EditPlans.tsx）
- 模板库页面（TemplateLibrary.tsx）
- 查重详情页（DuplicationDetail.tsx）
- 查重结果页（DuplicationResults.tsx）

apps/web/src/pages/duplication/DuplicationDetail.tsx

@@ -33,8 +33,9 @@ const formatSize = (bytes: number) => {
 /** 格式化时长 */
 const formatDuration = (seconds?: number) => {
   if (!seconds) return "-";
-  const m = Math.floor(seconds / 60);
-  const s = seconds % 60;
+  const totalSec = Math.round(seconds);
+  const m = Math.floor(totalSec / 60);
+  const s = totalSec % 60;
   return m > 0 ? `${m}分${s}秒` : `${s}秒`;
 };
 

apps/web/src/pages/duplication/DuplicationResults.tsx

@@ -59,8 +59,9 @@ const formatSize = (bytes: number) => {
 /** 格式化时长 */
 const formatDuration = (seconds?: number) => {
   if (!seconds) return "-";
-  const m = Math.floor(seconds / 60);
-  const s = seconds % 60;
+  const totalSec = Math.round(seconds);
+  const m = Math.floor(totalSec / 60);
+  const s = totalSec % 60;
   return m > 0 ? `${m}分${s}秒` : `${s}秒`;
 };
 

apps/web/src/pages/edit-plans/EditPlans.tsx

@@ -86,8 +86,9 @@ const STATUS_CONFIG: Record<
 /** 格式化时长 */
 const formatDuration = (seconds: number): string => {
   if (seconds <= 0) return "-";
-  const m = Math.floor(seconds / 60);
-  const s = seconds % 60;
+  const totalSec = Math.round(seconds);
+  const m = Math.floor(totalSec / 60);
+  const s = totalSec % 60;
   if (m === 0) return `${s}秒`;
   return `${m}分${s > 0 ? `${s}秒` : ""}`;
 };

apps/web/src/pages/templates/TemplateLibrary.tsx

@@ -92,8 +92,9 @@ const gradientForCategory = (category: string): string => {
 /** 格式化时长 */
 const formatDuration = (seconds: number | undefined | null): string => {
   if (!seconds || seconds <= 0) return "0秒";
-  const m = Math.floor(seconds / 60);
-  const s = seconds % 60;
+  const totalSec = Math.round(seconds);
+  const m = Math.floor(totalSec / 60);
+  const s = totalSec % 60;
   if (m === 0) return `${s}秒`;
   return `${m}分${s > 0 ? `${s}秒` : ""}`;
 };