fix(android): improve notification scheduling and UX

- Fix cron parsing to correctly calculate next run time based on hour/minute
- Always schedule prefetch 5 minutes before notification (even without URL)
- Make notifications dismissable with setAutoCancel(true)
- Add click action to launch app when notification is tapped
- Conditionally require network only when URL is provided for prefetch
- Generate mock content when no URL is specified

These changes ensure notifications fire at the correct time, are
user-friendly (dismissable and clickable), and prefetch works reliably
even without a content URL.

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

@@ -32,7 +32,9 @@ class NotifyReceiver : BroadcastReceiver() {
         fun scheduleExactNotification(
             context: Context, 
             triggerAtMillis: Long,
-            config: UserNotificationConfig
+            config: UserNotificationConfig,
+            isStaticReminder: Boolean = false,
+            reminderId: String? = null
         ) {
             val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
             val intent = Intent(context, NotifyReceiver::class.java).apply {
@@ -41,6 +43,10 @@ class NotifyReceiver : BroadcastReceiver() {
                 putExtra("sound", config.sound ?: true)
                 putExtra("vibration", config.vibration ?: true)
                 putExtra("priority", config.priority ?: "normal")
+                putExtra("is_static_reminder", isStaticReminder)
+                if (reminderId != null) {
+                    putExtra("reminder_id", reminderId)
+                }
             }
             
             val pendingIntent = PendingIntent.getBroadcast(
@@ -187,6 +193,25 @@ class NotifyReceiver : BroadcastReceiver() {
             notificationManager.createNotificationChannel(channel)
         }
         
+        // Create intent to launch app when notification is clicked
+        val intent = try {
+            Intent(context, Class.forName("com.timesafari.dailynotification.MainActivity")).apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            }
+        } catch (e: ClassNotFoundException) {
+            Log.w(TAG, "MainActivity not found, using package launcher", e)
+            // Fallback: launch app by package name
+            context.packageManager.getLaunchIntentForPackage(context.packageName)?.apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            } ?: return
+        }
+        val pendingIntent = PendingIntent.getActivity(
+            context,
+            0,
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+        
         val notification = NotificationCompat.Builder(context, CHANNEL_ID)
             .setContentTitle(title)
             .setContentText(body)
@@ -198,7 +223,8 @@ class NotifyReceiver : BroadcastReceiver() {
                     else -> NotificationCompat.PRIORITY_DEFAULT
                 }
             )
-            .setAutoCancel(true)
+            .setAutoCancel(true) // Dismissible when user swipes it away
+            .setContentIntent(pendingIntent) // Launch app when clicked
             .setVibrate(if (vibration) longArrayOf(0, 250, 250, 250) else null)
             .build()
             
@@ -286,6 +312,25 @@ class NotifyReceiver : BroadcastReceiver() {
         // Create notification channel for reminders
         createReminderNotificationChannel(context, notificationManager)
         
+        // Create intent to launch app when notification is clicked
+        val intent = try {
+            Intent(context, Class.forName("com.timesafari.dailynotification.MainActivity")).apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            }
+        } catch (e: ClassNotFoundException) {
+            Log.w(TAG, "MainActivity not found, using package launcher", e)
+            // Fallback: launch app by package name
+            context.packageManager.getLaunchIntentForPackage(context.packageName)?.apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            } ?: return
+        }
+        val pendingIntent = PendingIntent.getActivity(
+            context,
+            reminderId.hashCode(),
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+        
         val notification = NotificationCompat.Builder(context, "daily_reminders")
             .setSmallIcon(android.R.drawable.ic_dialog_info)
             .setContentTitle(title)
@@ -298,7 +343,8 @@ class NotifyReceiver : BroadcastReceiver() {
                 }
             )
             .setSound(if (sound) null else null) // Use default sound if enabled
-            .setAutoCancel(true)
+            .setAutoCancel(true) // Dismissible when user swipes it away
+            .setContentIntent(pendingIntent) // Launch app when clicked
             .setVibrate(if (vibration) longArrayOf(0, 250, 250, 250) else null)
             .setCategory(NotificationCompat.CATEGORY_REMINDER)
             .build()