feat: Update week day representation and add localization support for weekdays

frontend/locales/en.ts

@@ -100,6 +100,15 @@ export const en = {
     cron: 'Cron',
     daily: 'Daily',
     weekly: 'Weekly',
+    weekdaysNarrow: {
+      0: 'S',
+      1: 'M',
+      2: 'T',
+      3: 'W',
+      4: 'T',
+      5: 'F',
+      6: 'S',
+    },
     enableCron: 'Enable Cron Schedule',
     enableDaily: 'Enable Daily Run',
     enableWeekly: 'Enable Weekly Run',

frontend/locales/es.ts

@@ -100,6 +100,15 @@ export const es = {
     cron: 'Cron',
     daily: 'Diario',
     weekly: 'Semanal',
+    weekdaysNarrow: {
+      0: 'D',
+      1: 'L',
+      2: 'M',
+      3: 'X',
+      4: 'J',
+      5: 'V',
+      6: 'S',
+    },
     enableCron: 'Habilitar Cron',
     enableDaily: 'Habilitar Ejecución Diaria',
     enableWeekly: 'Habilitar Ejecución Semanal',

frontend/locales/zh.ts

@@ -100,6 +100,15 @@ export const zh = {
     cron: 'Cron',
     daily: '每日',
     weekly: '每周',
+    weekdaysNarrow: {
+      0: '日',
+      1: '一',
+      2: '二',
+      3: '三',
+      4: '四',
+      5: '五',
+      6: '六',
+    },
     enableCron: '启用 Cron 计划',
     enableDaily: '启用每日运行',
     enableWeekly: '启用每周运行',