fix: update existing schedule instead of creating new one during rollover

- Find existing enabled notify schedule and update its nextRunAt
- Fallback to finding schedule by kind='notify' && enabled=true if not found by ID
- This ensures getNotificationStatus() finds the updated schedule, not a stale one

Previously, during rollover we were creating a new schedule with a different ID
(daily_rollover_...), but getNotificationStatus() was finding the original schedule
(with ID like notify_... or daily_notification) which still had the old nextRunAt.

The fix:
- First try to find schedule by the provided stableScheduleId
- If not found, find the existing enabled notify schedule (there should only be one)
- Update that schedule's nextRunAt instead of creating a new one
- This ensures getNotificationStatus() returns the correct nextNotificationTime

This matches the pattern used in getNotificationStatus() which finds schedules
with kind='notify' && enabled=true.

android/src/main/java/com/timesafari/dailynotification/NotifyReceiver.kt

@@ -399,10 +399,21 @@ class NotifyReceiver : BroadcastReceiver() {
             
             // Update database schedule with new nextRunAt so getNotificationStatus() returns correct value
             // This is critical for rollover scenarios where the UI needs to show the updated time
+            // Strategy: Find existing enabled notify schedule and update it (there should only be one)
+            // This ensures getNotificationStatus() finds the updated schedule, not a stale one
             try {
                 runBlocking {
                     val db = DailyNotificationDatabase.getDatabase(context)
-                    val existingSchedule = db.scheduleDao().getById(stableScheduleId)
+                    
+                    // First, try to find schedule by the provided stableScheduleId
+                    var scheduleToUpdate = db.scheduleDao().getById(stableScheduleId)
+                    
+                    // If not found by ID, find the existing enabled notify schedule (for rollover scenarios)
+                    // getNotificationStatus() finds schedules with kind="notify" && enabled=true
+                    if (scheduleToUpdate == null) {
+                        val allSchedules = db.scheduleDao().getAll()
+                        scheduleToUpdate = allSchedules.firstOrNull { it.kind == "notify" && it.enabled }
+                    }
                     
                     // Calculate cron expression from trigger time (HH:mm format)
                     val calendar = java.util.Calendar.getInstance().apply {
@@ -413,14 +424,13 @@ class NotifyReceiver : BroadcastReceiver() {
                     val cronExpression = "${minute} ${hour} * * *"
                     val clockTime = String.format("%02d:%02d", hour, minute)
                     
-                    if (existingSchedule != null) {
+                    if (scheduleToUpdate != null) {
                         // Update existing schedule with new nextRunAt
-                        val currentTime = System.currentTimeMillis()
+                        // Use the existing schedule's ID (not stableScheduleId) to ensure we update the right one
-                        db.scheduleDao().updateRunTimes(stableScheduleId, existingSchedule.lastRunAt, triggerAtMillis)
+                        db.scheduleDao().updateRunTimes(scheduleToUpdate.id, scheduleToUpdate.lastRunAt, triggerAtMillis)
-                        Log.d(SCHEDULE_TAG, "Updated schedule in database: id=$stableScheduleId, nextRunAt=$triggerAtMillis")
+                        Log.d(SCHEDULE_TAG, "Updated schedule in database: id=${scheduleToUpdate.id}, nextRunAt=$triggerAtMillis (rollover)")
                     } else {
-                        // Create new schedule entry for rollover scenarios
+                        // No existing schedule found - create new one (shouldn't happen in normal flow)
-                        // This ensures getNotificationStatus() can find the schedule
                         val newSchedule = Schedule(
                             id = stableScheduleId,
                             kind = "notify",
@@ -434,7 +444,7 @@ class NotifyReceiver : BroadcastReceiver() {
                             stateJson = null
                         )
                         db.scheduleDao().upsert(newSchedule)
-                        Log.d(SCHEDULE_TAG, "Created schedule in database: id=$stableScheduleId, nextRunAt=$triggerAtMillis")
+                        Log.d(SCHEDULE_TAG, "Created new schedule in database: id=$stableScheduleId, nextRunAt=$triggerAtMillis")
                     }
                 }
             } catch (e: Exception) {