fix(player): 评论总数含回复并改用相对时间

lib/core/formatting/relative_date_time.dart

@@ -0,0 +1,24 @@
+// Author: fruit.com.cn
+
+import '../../l10n/app_localizations.dart';
+
+/// Formats a timestamp as a relative label, falling back to a compact local date.
+String formatRelativeDateTime(
+  DateTime value,
+  AppLocalizations l10n, {
+  DateTime? now,
+}) {
+  final localValue = value.toLocal();
+  final localNow = (now ?? DateTime.now()).toLocal();
+  final elapsed = localNow.difference(localValue);
+  if (elapsed.isNegative || elapsed.inMinutes < 1) return l10n.justNow;
+  if (elapsed.inMinutes < 60) return l10n.minutesAgo(elapsed.inMinutes);
+  if (elapsed.inHours < 24) return l10n.hoursAgo(elapsed.inHours);
+  if (localValue.year == localNow.year) {
+    return '${_twoDigits(localValue.month)}-${_twoDigits(localValue.day)}';
+  }
+  return '${localValue.year}-${_twoDigits(localValue.month)}-'
+      '${_twoDigits(localValue.day)}';
+}
+
+String _twoDigits(int value) => value.toString().padLeft(2, '0');