feat: replace all hardcoded en-US and $ formatting with locale-aware helpers

src/views/Dashboard.vue

@@ -94,6 +94,7 @@ import {
 import { Clock } from 'lucide-vue-next'
 import { useEntriesStore } from '../stores/entries'
 import { useProjectsStore } from '../stores/projects'
+import { formatDateLong } from '../utils/locale'
 import type { TimeEntry } from '../stores/entries'
 
 // Register Chart.js components
@@ -117,12 +118,7 @@ const greeting = computed(() => {
 
 // Formatted date
 const formattedDate = computed(() => {
-  return new Date().toLocaleDateString('en-US', {
-    weekday: 'long',
-    year: 'numeric',
-    month: 'long',
-    day: 'numeric'
-  })
+  return formatDateLong(new Date().toISOString())
 })
 
 // Empty state check