feat: 更新英语描红icon

miniprogram/englishPages/letterTracing/letterTracing.ts

@@ -21,32 +21,38 @@ import { loadLetterFont } from '../shared/draw/drawTools';
 const MODES = [
     {
         id: 'letter-tracing-single',
+        icon: 'start-a',
         label: '默认字帖',
         desc: '配图、例句与描红',
     },
     {
         id: 'letter-tracing-upper-lower',
+        icon: 'draw-o',
         // label: '字母总览',
         label: '基础描红',
         desc: 'Uppercase / Lowercase 总览',
     },
     {
         id: 'letter-tracing-case-pairing',
+        icon: 'font-size',
         label: '大小写对照',
         desc: '半组字母左大写右小写',
     },
     {
         id: 'letter-tracing-two-column',
+        icon: 'two-columns',
         label: '两列描红',
         desc: '左 A–M、右 N–Z 配对描红',
     },
     {
         id: 'letter-tracing-single-line',
+        icon: 'square-half',
         label: '13字母半表',
         desc: '每行一个字母，13 字母半表',
     },
     {
         id: 'letter-tracing-triple',
+        icon: 'ABC-list',
         label: '三字母精练',
         desc: '每页聚焦 3 个字母深度书写',
     },