fix: 연차/반년 최초 적용 타이밍 문제 수정

- setOverride 후 updateRemainingAnnualLeave()를 먼저 호출하고 updateCalendar() 호출
- 연차 계산이 완료된 후 화면 갱신되도록 순서 변경

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

app/src/main/java/com/example/shiftalarm/MainActivity.kt

@@ -213,15 +213,6 @@ class MainActivity : AppCompatActivity() {
                 binding.tvAnnualLeave.text = "연차: --"
             }
         }
- lifecycleScope.launch {
- val repo = ShiftRepository(this@MainActivity)
- val annualLeave = repo.getAnnualLeave()
- annualLeave?.let {
- binding.tvAnnualLeave.text = "연차: ${String.format("%.1f", it.remainingDays)}"
- } ?: run {
- binding.tvAnnualLeave.text = "연차: --"
- }
- }
     }
 
     private fun showMonthYearPicker() {
@@ -337,12 +328,6 @@ class MainActivity : AppCompatActivity() {
                 binding.todayStatusText.setTextColor(androidx.core.content.ContextCompat.getColor(this@MainActivity, R.color.text_secondary))
             }
 
- // Update Annual Leave display
- val annualLeave = withContext(Dispatchers.IO) { repo.getAnnualLeave() }
- annualLeave?.let {
- binding.tvAnnualLeave.text = "연차: ${String.format("%.1f", it.remainingDays)}"
- } ?: run {
- binding.tvAnnualLeave.text = "연차: --"
             // Update Annual Leave display
             val annualLeave = withContext(Dispatchers.IO) { repo.getAnnualLeave() }
             annualLeave?.let {
@@ -651,10 +636,11 @@ class MainActivity : AppCompatActivity() {
             else -> {
                 // New Types: 월차, 연차, 반월, 반년, 교육 -> Saved as Override with no time
                 repo.setOverride(date, selected, team, factory)
+                // 연차 계산을 먼저 수행하고 달력 업데이트
+                repo.updateRemainingAnnualLeave()
                 updateCalendar()
                 syncAllAlarms(this)
                 android.widget.Toast.makeText(this, "${selected}(으)로 기록되었습니다. 알람이 해제됩니다.", android.widget.Toast.LENGTH_SHORT).show()
-                repo.updateRemainingAnnualLeave()
             }
         }
     }