feat(i18n): 增强生理周期模块的国际化支持，添加多语言格式和翻译

i18n/en/menstrual.ts

@@ -1,5 +1,21 @@
 export const menstrual = {
   dateFormatShort: 'MMM D',
+  dateFormats: {
+    monthTitle: 'MMM',
+    monthSubtitle: 'YYYY',
+  },
+  weekdays: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
+  today: 'Today',
+  legend: {
+    period: 'Period',
+    predictedPeriod: 'Predicted period',
+    fertile: 'Fertile window',
+    ovulation: 'Ovulation',
+  },
+  actions: {
+    markPeriod: 'Mark period',
+    cancelMark: 'Cancel',
+  },
   card: {
     title: 'Menstrual cycle',
     syncingState: 'Syncing',

i18n/zh/menstrual.ts

@@ -1,5 +1,21 @@
 export const menstrual = {
   dateFormatShort: 'M月D日',
+  dateFormats: {
+    monthTitle: 'M月',
+    monthSubtitle: 'YYYY年',
+  },
+  weekdays: ['一', '二', '三', '四', '五', '六', '日'],
+  today: '今天',
+  legend: {
+    period: '经期',
+    predictedPeriod: '预测经期',
+    fertile: '排卵期',
+    ovulation: '排卵日',
+  },
+  actions: {
+    markPeriod: '标记经期',
+    cancelMark: '取消标记',
+  },
   card: {
     title: '生理周期',
     syncingState: '同步中',