finish switch to event sequence

packages/simple_intent_receiver/android/src/main/kotlin/eu/weblibre/simple_intent_receiver/IntentReceiver.kt

@@ -22,7 +22,7 @@ package eu.weblibre.simple_intent_receiver
 import io.flutter.plugin.common.BinaryMessenger
 import eu.weblibre.simple_intent_receiver.pigeons.IntentEvents
 import eu.weblibre.simple_intent_receiver.pigeons.Intent as PigeonIntent
-import eu.weblibre.flutter_mozilla_components.ext.EventSequence
+import eu.weblibre.simple_intent_receiver.ext.EventSequence
 
 class IntentReceiver(messenger: BinaryMessenger) {
     private val intentEvents: IntentEvents = IntentEvents(messenger)
@@ -31,4 +31,3 @@ class IntentReceiver(messenger: BinaryMessenger) {
         intentEvents.onIntentReceived(EventSequence.next(), intent) { }
     }
 }
-}

packages/simple_intent_receiver/android/src/main/kotlin/eu/weblibre/simple_intent_receiver/ext/EventSequence.kt

@@ -0,0 +1,22 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+package eu.weblibre.simple_intent_receiver.ext
+
+import java.util.concurrent.atomic.AtomicLong
+
+/**
+ * Thread-safe monotonic sequence counter for event ordering.
+ *
+ * Replaces System.currentTimeMillis() for event timestamps sent to Flutter,
+ * guaranteeing strictly increasing values regardless of wall-clock changes
+ * and eliminating same-millisecond collisions.
+ */
+object EventSequence {
+    private val counter = AtomicLong(0)
+
+    fun next(): Long = counter.incrementAndGet()
+}