feat(ios): add missed rollover recovery for background/inactive app scenarios

Implement enhanced app launch recovery to detect and schedule missed rollover
notifications that occurred while the app was terminated, backgrounded, or
inactive.

Key improvements:
- Detect missed rollovers on app launch by checking for past notifications
  without next scheduled notification
- Add active rollover check when app becomes active (handles inactive app
  scenario where notifications fire silently)
- Calculate forward to future time when next scheduled time is in the past
  (handles delays > rollover interval)
- Enhance duplicate detection to exclude original notification from checks
- Retry rollover if previous attempt failed (rollover time set but no next
  notification exists)

Changes:
- DailyNotificationReactivationManager: Add detectAndProcessMissedRollovers()
  method and performActiveRolloverCheck() for app becoming active
- DailyNotificationReactivationManager: Enhance warm start scenario to check
  for missed rollovers
- DailyNotificationScheduler: Add forward calculation loop when next scheduled
  time is in the past
- DailyNotificationPlugin: Register observer for UIApplication.didBecomeActiveNotification
  to trigger rollover check when app becomes active

Fixes rollover scheduling for:
- App terminated: Rollover now detected and scheduled on next launch
- App inactive/backgrounded: Rollover detected when app becomes active
- Delayed recovery: Handles cases where app reopened after rollover interval
  has passed by calculating forward to next future time

All scenarios now properly schedule rollover notifications regardless of app
state when notification fires.

ios/Plugin/DailyNotificationPlugin.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import UIKit
 import Capacitor
 import UserNotifications
 import BackgroundTasks
@@ -84,6 +85,17 @@ public class DailyNotificationPlugin: CAPPlugin {
         NSLog("DNP-ROLLOVER: Observer registered for DailyNotificationDelivered notification")
         print("DNP-ROLLOVER: Observer registered for DailyNotificationDelivered notification")
         
+        // Register for app becoming active to check for missed rollovers
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(handleAppBecameActive(_:)),
+            name: UIApplication.didBecomeActiveNotification,
+            object: nil
+        )
+        
+        NSLog("DNP-ROLLOVER: Observer registered for app becoming active")
+        print("DNP-ROLLOVER: Observer registered for app becoming active")
+        
         NSLog("DNP-DEBUG: DailyNotificationPlugin.load() completed - initialization done")
         print("DNP-PLUGIN: Daily Notification Plugin loaded on iOS")
         
@@ -1434,6 +1446,23 @@ public class DailyNotificationPlugin: CAPPlugin {
         }
     }
     
+    /**
+     * Handle app becoming active (foreground)
+     * 
+     * This is called when the app becomes active to check for missed rollovers
+     * that occurred while the app was backgrounded.
+     * 
+     * @param notification NSNotification for app becoming active
+     */
+    @objc private func handleAppBecameActive(_ notification: Notification) {
+        NSLog("DNP-ROLLOVER: handleAppBecameActive called")
+        print("DNP-ROLLOVER: handleAppBecameActive called")
+        
+        // Perform lightweight rollover check when app becomes active
+        // This handles cases where notifications fired while app was backgrounded
+        reactivationManager?.performActiveRolloverCheck()
+    }
+    
     /**
      * Process rollover for delivered notification
      *