更新换行算法和APP-PUSH

client/src/features/textWrap/grapheme/strategies/intlSegmenter.ts

@@ -0,0 +1,28 @@
+/**
+ * Intl.Segmenter 策略（优先）
+ *
+ * 注意：不同 JS 引擎/版本对 Intl.Segmenter 的支持可能不同，调用方必须捕获异常并降级。
+ */
+
+export function canUseIntlSegmenter(): boolean {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const Seg = (globalThis as any)?.Intl?.Segmenter;
+  return typeof Seg === 'function';
+}
+
+export function segmentWithIntlSegmenter(text: string): string[] {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const Segmenter = (globalThis as any).Intl.Segmenter as new (locales?: string | string[], options?: any) => any;
+
+  // 用 zh-Hant 仅用于选择合适的 locale；grapheme 分割应与语言本身关系不大，但保持固定输入更易对齐跨端。
+  const seg = new Segmenter('zh-Hant', { granularity: 'grapheme' });
+  const it = seg.segment(text);
+
+  const clusters: string[] = [];
+  for (const part of it) {
+    // part: { segment: string, index: number, input: string, isWordLike?: boolean }
+    clusters.push(part.segment);
+  }
+  return clusters;
+}
+