Improve share intake diagnostics

lib/features/settings/presentation/settings_view.dart

@@ -520,11 +520,12 @@ class _ShareDiagnosticsDialog extends StatelessWidget {
                   mainAxisSize: MainAxisSize.min,
                   children: events
                       .map(
-                        (ShareIntakeDebugEvent event) => Padding(
-                          padding: const EdgeInsets.only(bottom: 10),
-                          child: SelectableText(
-                            '${_debugTimeLabel(event.at)}  ${event.stage}\n${event.message}',
-                          ),
+                        (
+                          ShareIntakeDebugEvent event,
+                        ) => _ShareDiagnosticsEventTile(
+                          event: event,
+                          label:
+                              '${_debugTimeLabel(event.at)}  ${event.stage}\n${event.message}',
                         ),
                       )
                       .toList(growable: false),
@@ -545,6 +546,51 @@ class _ShareDiagnosticsDialog extends StatelessWidget {
   }
 }
 
+class _ShareDiagnosticsEventTile extends StatelessWidget {
+  const _ShareDiagnosticsEventTile({required this.event, required this.label});
+
+  final ShareIntakeDebugEvent event;
+  final String label;
+
+  @override
+  Widget build(BuildContext context) {
+    final String? details = event.details;
+    if (details == null || details.isEmpty) {
+      return Padding(
+        padding: const EdgeInsets.only(bottom: 10),
+        child: SelectableText(label),
+      );
+    }
+
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 10),
+      child: ExpansionTile(
+        tilePadding: EdgeInsets.zero,
+        childrenPadding: const EdgeInsets.only(top: 6, bottom: 8),
+        title: SelectableText(label),
+        subtitle: Text(
+          'Tap to show raw shared text (${details.length} chars).',
+        ),
+        children: <Widget>[
+          DecoratedBox(
+            decoration: BoxDecoration(
+              border: Border.all(color: Theme.of(context).dividerColor),
+              borderRadius: BorderRadius.circular(6),
+            ),
+            child: Padding(
+              padding: const EdgeInsets.all(10),
+              child: Align(
+                alignment: Alignment.centerLeft,
+                child: SelectableText(details),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
 String _debugTimeLabel(DateTime value) {
   return '${value.hour.toString().padLeft(2, '0')}:${value.minute.toString().padLeft(2, '0')}:${value.second.toString().padLeft(2, '0')}';
 }

lib/features/share_intake/application/share_intake_debug_log.dart

@@ -4,12 +4,14 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 const String _shareIntakeDebugLogKey = 'share_intake_debug_log_v1';
 const int _maxShareIntakeDebugEvents = 40;
+const int _maxShareIntakeDebugDetailChars = 6000;
 
 class ShareIntakeDebugEvent {
   const ShareIntakeDebugEvent({
     required this.at,
     required this.stage,
     required this.message,
+    this.details,
   });
 
   factory ShareIntakeDebugEvent.fromJson(Map<String, dynamic> json) {
@@ -19,18 +21,21 @@ class ShareIntakeDebugEvent {
       ).toLocal(),
       stage: json['stage'] as String? ?? 'unknown',
       message: json['message'] as String? ?? '',
+      details: json['details'] as String?,
     );
   }
 
   final DateTime at;
   final String stage;
   final String message;
+  final String? details;
 
   Map<String, dynamic> toJson() {
     return <String, dynamic>{
       'at': at.toUtc().toIso8601String(),
       'stage': stage,
       'message': message,
+      if (details != null) 'details': details,
     };
   }
 }
@@ -55,11 +60,16 @@ class ShareIntakeDebugLog {
     }
   }
 
-  Future<void> record(String stage, String message) async {
+  Future<void> record(String stage, String message, {String? details}) async {
     final SharedPreferences prefs = await SharedPreferences.getInstance();
     final List<ShareIntakeDebugEvent> current = await read();
     final List<ShareIntakeDebugEvent> next = <ShareIntakeDebugEvent>[
-      ShareIntakeDebugEvent(at: DateTime.now(), stage: stage, message: message),
+      ShareIntakeDebugEvent(
+        at: DateTime.now(),
+        stage: stage,
+        message: message,
+        details: _compactDetails(details),
+      ),
       ...current,
     ].take(_maxShareIntakeDebugEvents).toList(growable: false);
     await prefs.setString(
@@ -77,3 +87,14 @@ class ShareIntakeDebugLog {
     await prefs.remove(_shareIntakeDebugLogKey);
   }
 }
+
+String? _compactDetails(String? value) {
+  final String? trimmed = value?.trim();
+  if (trimmed == null || trimmed.isEmpty) {
+    return null;
+  }
+  if (trimmed.length <= _maxShareIntakeDebugDetailChars) {
+    return trimmed;
+  }
+  return '${trimmed.substring(0, _maxShareIntakeDebugDetailChars)}\n[truncated]';
+}

lib/features/share_intake/presentation/incoming_share_listener.dart

@@ -159,6 +159,12 @@ class _IncomingShareListenerState extends ConsumerState<IncomingShareListener> {
       return;
     }
 
+    await _debugLog.record(
+      'raw_share_text',
+      'Captured raw share text (${trimmed.length} chars).',
+      details: trimmed,
+    );
+
     final SharedPayload? payload = buildSharedPayloadFromRawText(
       rawText: trimmed,
       platform: defaultTargetPlatform.name,