fixed stale state after logout and replayed or lost share intents

lib/share_intent/pending_share.dart

@@ -5,11 +5,17 @@ class PendingShare {
   final String? text;
   final DateTime receivedAt;
 
+  /// Paths as delivered by the platform, before the listener moved them into
+  /// a per-share folder. Duplicate detection compares these, since the
+  /// relocated [filePaths] differ for every delivery.
+  final List<String> sourcePaths;
+
   const PendingShare({
     required this.filePaths,
     required this.text,
     required this.receivedAt,
-  });
+    List<String>? sourcePaths,
+  }) : sourcePaths = sourcePaths ?? filePaths;
 
   bool get hasFiles => filePaths.isNotEmpty;
   bool get hasText => text != null && text!.isNotEmpty;
@@ -20,5 +26,5 @@ class PendingShare {
   /// the same share can arrive twice on the media stream — receivedAt is
   /// deliberately ignored here so such duplicates compare equal.
   bool contentEquals(PendingShare other) =>
-      text == other.text && listEquals(filePaths, other.filePaths);
+      text == other.text && listEquals(sourcePaths, other.sourcePaths);
 }