fix build error

src/components/WorkoutCalendar.vue

@@ -491,15 +491,6 @@ function calculateDurationForRange(workoutList, startDate, endDate) {
     .reduce((sum, w) => sum + (w.duration || 0), 0)
 }
 
-function countWorkoutsForRange(workoutList, startDate, endDate) {
-  return workoutList.filter(w => {
-    const workoutDate = new Date(w.scheduled_date)
-    return workoutDate >= startDate &&
-           workoutDate <= endDate &&
-           w.status === 'completed'
-  }).length
-}
-
 const currentWeekTSS = computed(() => {
   const now = new Date()
   const weekStart = getWeekStart(now)
@@ -538,26 +529,6 @@ const tssChangeClass = computed(() => {
   return 'tss-change-neutral'
 })
 
-const currentWeekDuration = computed(() => {
-  const now = new Date()
-  const weekStart = getWeekStart(now)
-  const weekEnd = getWeekEnd(now)
-  const totalMinutes = calculateDurationForRange(workouts.value, weekStart, weekEnd)
-  const hours = Math.floor(totalMinutes / 60)
-  const minutes = totalMinutes % 60
-  if (hours > 0) {
-    return `${hours}h ${minutes}m`
-  }
-  return `${minutes}m`
-})
-
-const currentWeekWorkoutCount = computed(() => {
-  const now = new Date()
-  const weekStart = getWeekStart(now)
-  const weekEnd = getWeekEnd(now)
-  return countWorkoutsForRange(workouts.value, weekStart, weekEnd)
-})
-
 onMounted(async () => {
   // Debug logging
   console.log('=== Frontend Debug Info ===')
@@ -771,11 +742,6 @@ function truncateText(text, maxLength) {
   return text.substring(0, maxLength) + '...'
 }
 
-function getWorkoutColor(type) {
-  const typeObj = workoutTypes.value.find(t => t.name === type)
-  return typeObj?.color || '#667eea'
-}
-
 function getWorkoutIcon(type) {
   const typeObj = workoutTypes.value.find(t => t.name === type)
   return typeObj?.icon || '🏋️'