feat: copy button for sync log entries with stack trace and device info (#210)

- Add copy button to each sync log tile; copies a markdown summary of the
  entry plus the full About section (app version, platform, device info).
- Store stack trace and isPermanent flag on error entries (schema v33) so
  bug reports contain enough context to diagnose device-specific failures
  like MissingPluginException on Android.
- Add Android device info (manufacturer, model, OS version) to the About
  screen via device_info_plus; shared with the sync log copy via a new
  lib/ui/utils/about_markdown.dart utility.
- Show isPermanent in the subtitle ("Error (permanent)") and in the
  copied markdown.
- Display stack trace in red monospace in the expanded tile view.
- Update migration tests to assert schema v33 columns exist.
- Update fake SyncLogRepository implementations in tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/core/repositories/sync_log_repository.dart

@@ -19,6 +19,8 @@ class SyncLogEntry {
     required this.id,
     required this.result,
     this.errorMessage,
+    this.stackTrace,
+    this.isPermanent,
     required this.protocol,
     required this.emailsFetched,
     required this.emailsSkipped,
@@ -34,6 +36,8 @@ class SyncLogEntry {
   final int id;
   final String result; // 'ok' or 'error'
   final String? errorMessage;
+  final String? stackTrace;
+  final bool? isPermanent;
   final String protocol; // 'imap' or 'jmap'
   final int emailsFetched;
   final int emailsSkipped;
@@ -54,6 +58,8 @@ abstract class SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,
@@ -81,6 +87,8 @@ class NoOpSyncLogRepository implements SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,

lib/core/sync/account_sync_manager.dart

@@ -260,6 +260,8 @@ class _AccountSync implements _SyncLoop {
             accountId: account.id,
             success: false,
             errorMessage: e.toString(),
+            stackTrace: st.toString(),
+            isPermanent: isPermanent,
             protocol: 'imap',
             emailsFetched: 0,
             emailsSkipped: 0,
@@ -513,6 +515,8 @@ class _JmapAccountSync implements _SyncLoop {
             accountId: account.id,
             success: false,
             errorMessage: e.toString(),
+            stackTrace: st.toString(),
+            isPermanent: isPermanent,
             protocol: 'jmap',
             emailsFetched: 0,
             emailsSkipped: 0,

lib/data/db/database.dart

@@ -192,6 +192,10 @@ class SyncLogs extends Table {
   DateTimeColumn get finishedAt => dateTime()();
   // Added in schema v13: raw protocol log when account.verbose == true.
   TextColumn get protocolLog => text().nullable()();
+  // Added in schema v33: stack trace captured when an error occurs.
+  TextColumn get stackTrace => text().nullable()();
+  // Added in schema v33: whether the sync loop stopped permanently after this error.
+  BoolColumn get isPermanent => boolean().nullable()();
 }
 
 /// Per-mailbox breakdown for a single sync cycle.
@@ -329,7 +333,7 @@ class AppDatabase extends _$AppDatabase {
   AppDatabase([QueryExecutor? executor]) : super(executor ?? _openConnection());
 
   @override
-  int get schemaVersion => 32;
+  int get schemaVersion => 33;
 
   Future<void> _createEmailFts() async {
     await customStatement('''
@@ -570,6 +574,10 @@ class AppDatabase extends _$AppDatabase {
           if (from < 32) {
             await m.createTable(localSieveApplied);
           }
+          if (from >= 7 && from < 33) {
+            await m.addColumn(syncLogs, syncLogs.stackTrace);
+            await m.addColumn(syncLogs, syncLogs.isPermanent);
+          }
         },
       );
 }

lib/data/repositories/sync_log_repository_impl.dart

@@ -13,6 +13,8 @@ class SyncLogRepositoryImpl implements SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,
@@ -30,6 +32,8 @@ class SyncLogRepositoryImpl implements SyncLogRepository {
               accountId: accountId,
               result: success ? 'ok' : 'error',
               errorMessage: Value(errorMessage),
+              stackTrace: Value(stackTrace),
+              isPermanent: Value(isPermanent),
               protocol: Value(protocol),
               itemsSynced: Value(emailsFetched),
               emailsSkipped: Value(emailsSkipped),
@@ -75,6 +79,8 @@ class SyncLogRepositoryImpl implements SyncLogRepository {
             id: r.id,
             result: r.result,
             errorMessage: r.errorMessage,
+            stackTrace: r.stackTrace,
+            isPermanent: r.isPermanent,
             protocol: r.protocol,
             emailsFetched: r.itemsSynced,
             emailsSkipped: r.emailsSkipped,

lib/ui/screens/about_screen.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -8,6 +7,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import 'package:sharedinbox/core/models/account.dart';
 import 'package:sharedinbox/di.dart';
+import 'package:sharedinbox/ui/utils/about_markdown.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 class AboutScreen extends ConsumerStatefulWidget {
@@ -19,57 +19,16 @@ class AboutScreen extends ConsumerStatefulWidget {
 
 class _AboutScreenState extends ConsumerState<AboutScreen> {
   final Future<PackageInfo> _packageInfoFuture = PackageInfo.fromPlatform();
+  late final Future<Map<String, String>> _deviceInfoFuture =
+      fetchAndroidDeviceInfo();
   late final Stream<List<Account>> _accountsStream;
 
-  static const _gitHash = String.fromEnvironment('GIT_HASH');
-
   @override
   void initState() {
     super.initState();
     _accountsStream = ref.read(accountRepositoryProvider).observeAccounts();
   }
 
-  String _buildMarkdown(
-    BuildContext context,
-    PackageInfo? pkg,
-    int imapCount,
-    int jmapCount,
-  ) {
-    final size = MediaQuery.of(context).size;
-    final pixelRatio = MediaQuery.of(context).devicePixelRatio;
-    final physW = (size.width * pixelRatio).toInt();
-    final physH = (size.height * pixelRatio).toInt();
-    final version =
-        pkg != null ? '${pkg.version}+${pkg.buildNumber}' : 'unknown';
-    final versionDisplay = _gitHash.isNotEmpty
-        ? '[$version](https://codeberg.org/guettli/sharedinbox/commit/$_gitHash)'
-        : version;
-    final osName = _capitalize(Platform.operatingSystem);
-    final isDark = MediaQuery.of(context).platformBrightness == Brightness.dark;
-
-    final gitCommitLine = _gitHash.isNotEmpty
-        ? '| Git Commit | [$_gitHash](https://codeberg.org/guettli/sharedinbox/commit/$_gitHash) |\n'
-        : '';
-    return '## [sharedinbox.de](https://sharedinbox.de)\n\n'
-        '| Property | Value |\n'
-        '|----------|-------|\n'
-        '| App Version | $versionDisplay |\n'
-        '$gitCommitLine'
-        '| Platform | ${Platform.operatingSystem} |\n'
-        '| $osName Version | ${Platform.operatingSystemVersion} |\n'
-        '| Resolution | ${physW}x$physH px'
-        ' (logical: ${size.width.toInt()}x${size.height.toInt()} pt,'
-        ' ratio: ${pixelRatio.toStringAsFixed(1)}x) |\n'
-        '| Dart Version | ${Platform.version.split(' ').first} |\n'
-        '| Processors | ${Platform.numberOfProcessors} |\n'
-        '| Dark Mode | ${isDark ? 'yes' : 'no'} |\n'
-        '| IMAP Accounts | $imapCount |\n'
-        '| JMAP Accounts | $jmapCount |\n';
-  }
-
-  static String _capitalize(String s) =>
-      s.isEmpty ? s : '${s[0].toUpperCase()}${s.substring(1)}';
-
   Future<void> _copyToClipboard(
     BuildContext context,
     int imapCount,
@@ -79,10 +38,12 @@ class _AboutScreenState extends ConsumerState<AboutScreen> {
     try {
       pkg = await _packageInfoFuture;
     } catch (_) {}
+    final deviceInfo = await _deviceInfoFuture;
     if (!context.mounted) return;
     await Clipboard.setData(
       ClipboardData(
-        text: _buildMarkdown(context, pkg, imapCount, jmapCount),
+        text:
+            buildAboutMarkdown(context, pkg, imapCount, jmapCount, deviceInfo),
       ),
     );
     if (context.mounted) {
@@ -104,9 +65,10 @@ class _AboutScreenState extends ConsumerState<AboutScreen> {
     try {
       pkg = await _packageInfoFuture;
     } catch (_) {}
+    final deviceInfo = await _deviceInfoFuture;
     if (!context.mounted) return;
     final body = Uri.encodeComponent(
-      _buildMarkdown(context, pkg, imapCount, jmapCount),
+      buildAboutMarkdown(context, pkg, imapCount, jmapCount, deviceInfo),
     );
     final url = Uri.parse(
       'https://codeberg.org/guettli/sharedinbox/issues/new?body=$body',
@@ -150,18 +112,31 @@ class _AboutScreenState extends ConsumerState<AboutScreen> {
           body: Column(
             children: [
               Expanded(
-                child: FutureBuilder<PackageInfo>(
-                  future: _packageInfoFuture,
+                child: FutureBuilder<(PackageInfo?, Map<String, String>)>(
+                  future: Future.wait([
+                    _packageInfoFuture.then<PackageInfo?>((p) => p).catchError(
+                          (_) => null,
+                        ),
+                    _deviceInfoFuture,
+                  ]).then(
+                    (results) => (
+                      results[0] as PackageInfo?,
+                      results[1] as Map<String, String>,
+                    ),
+                  ),
                   builder: (context, snapshot) {
                     if (snapshot.connectionState == ConnectionState.waiting) {
                       return const Center(child: CircularProgressIndicator());
                     }
+                    final pkg = snapshot.data?.$1;
+                    final deviceInfo = snapshot.data?.$2 ?? {};
                     return Markdown(
-                      data: _buildMarkdown(
+                      data: buildAboutMarkdown(
                         context,
-                        snapshot.data,
+                        pkg,
                         imapCount,
                         jmapCount,
+                        deviceInfo,
                       ),
                       selectable: true,
                       onTapLink: (text, href, title) {

lib/ui/screens/sync_log_screen.dart

@@ -1,11 +1,15 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:intl/intl.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 
+import 'package:sharedinbox/core/models/account.dart';
 import 'package:sharedinbox/core/repositories/sync_log_repository.dart';
 import 'package:sharedinbox/di.dart';
+import 'package:sharedinbox/ui/utils/about_markdown.dart';
 
 final _timeFmt = DateFormat('MMM d, HH:mm:ss');
 
@@ -21,6 +25,81 @@ String _fmtBytes(int bytes) {
   return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
 }
 
+/// Generates a markdown string for a single sync log entry.
+String buildSyncLogEntryMarkdown(SyncLogEntry entry) {
+  final timeFmt = DateFormat('MMM d, HH:mm:ss');
+  final proto =
+      entry.protocol.isEmpty ? '' : ' (${entry.protocol.toUpperCase()})';
+  final title = entry.isOk
+      ? 'Sync OK — ${timeFmt.format(entry.startedAt)}$proto'
+      : 'Sync Error — ${timeFmt.format(entry.startedAt)}$proto';
+
+  final resultLabel = entry.isOk
+      ? 'OK'
+      : entry.isPermanent == true
+          ? 'Error (permanent — sync stopped)'
+          : 'Error (will retry)';
+
+  final buf = StringBuffer();
+  buf.writeln('## $title');
+  buf.writeln();
+  buf.writeln('| Property | Value |');
+  buf.writeln('|----------|-------|');
+  buf.writeln('| Result | $resultLabel |');
+  if (entry.protocol.isNotEmpty) {
+    buf.writeln('| Protocol | ${entry.protocol.toUpperCase()} |');
+  }
+  buf.writeln('| Started | ${timeFmt.format(entry.startedAt)} |');
+  buf.writeln('| Finished | ${timeFmt.format(entry.finishedAt)} |');
+  buf.writeln('| Duration | ${_fmtDuration(entry.duration)} |');
+  buf.writeln('| Emails fetched | ${entry.emailsFetched} |');
+  buf.writeln('| Emails up-to-date | ${entry.emailsSkipped} |');
+  buf.writeln('| Mailboxes synced | ${entry.mailboxesSynced} |');
+  buf.writeln('| Pending changes flushed | ${entry.pendingFlushed} |');
+  buf.writeln('| Data transferred | ${_fmtBytes(entry.bytesTransferred)} |');
+
+  if (entry.mailboxStats.isNotEmpty) {
+    buf.writeln();
+    buf.writeln('### Per Mailbox');
+    buf.writeln();
+    buf.writeln('| Mailbox | Fetched | Up-to-date | Duration |');
+    buf.writeln('|---------|---------|------------|----------|');
+    for (final m in entry.mailboxStats) {
+      final dur = m.duration != null ? _fmtDuration(m.duration!) : '—';
+      buf.writeln('| ${m.mailboxPath} | ${m.fetched} | ${m.skipped} | $dur |');
+    }
+  }
+
+  if (entry.errorMessage != null) {
+    buf.writeln();
+    buf.writeln('### Error Message');
+    buf.writeln();
+    buf.writeln('```');
+    buf.writeln(entry.errorMessage);
+    buf.writeln('```');
+  }
+
+  if (entry.stackTrace != null) {
+    buf.writeln();
+    buf.writeln('### Stack Trace');
+    buf.writeln();
+    buf.writeln('```');
+    buf.writeln(entry.stackTrace);
+    buf.writeln('```');
+  }
+
+  if (entry.protocolLog != null) {
+    buf.writeln();
+    buf.writeln('### Protocol Log');
+    buf.writeln();
+    buf.writeln('```');
+    buf.writeln(entry.protocolLog);
+    buf.writeln('```');
+  }
+
+  return buf.toString().trimRight();
+}
+
 class SyncLogScreen extends ConsumerStatefulWidget {
   const SyncLogScreen({super.key, required this.accountId});
 
@@ -69,6 +148,41 @@ class _SyncLogScreenState extends ConsumerState<SyncLogScreen> {
     ref.read(syncManagerProvider).syncNow(widget.accountId);
   }
 
+  Future<void> _copyEntry(SyncLogEntry entry) async {
+    PackageInfo? pkg;
+    try {
+      pkg = await PackageInfo.fromPlatform();
+    } catch (_) {}
+    final deviceInfo = await fetchAndroidDeviceInfo();
+    if (!mounted) return;
+
+    final accounts =
+        await ref.read(accountRepositoryProvider).observeAccounts().first;
+    final imapCount = accounts.where((a) => a.type == AccountType.imap).length;
+    final jmapCount = accounts.where((a) => a.type == AccountType.jmap).length;
+
+    if (!mounted) return;
+    final entryMd = buildSyncLogEntryMarkdown(entry);
+    final aboutMd = buildAboutMarkdown(
+      context,
+      pkg,
+      imapCount,
+      jmapCount,
+      deviceInfo,
+    );
+    await Clipboard.setData(
+      ClipboardData(text: '$entryMd\n\n---\n\n$aboutMd'),
+    );
+    if (mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          duration: Duration(seconds: 3),
+          content: Text('Copied to clipboard'),
+        ),
+      );
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -96,16 +210,20 @@ class _SyncLogScreenState extends ConsumerState<SyncLogScreen> {
           ? const Center(child: Text('No sync entries yet'))
           : ListView.builder(
               itemCount: _entries.length,
-              itemBuilder: (ctx, i) => _SyncLogTile(entry: _entries[i]),
+              itemBuilder: (ctx, i) => _SyncLogTile(
+                entry: _entries[i],
+                onCopy: () => unawaited(_copyEntry(_entries[i])),
+              ),
             ),
     );
   }
 }
 
 class _SyncLogTile extends StatelessWidget {
-  const _SyncLogTile({required this.entry});
+  const _SyncLogTile({required this.entry, required this.onCopy});
 
   final SyncLogEntry entry;
+  final VoidCallback onCopy;
 
   @override
   Widget build(BuildContext context) {
@@ -127,9 +245,20 @@ class _SyncLogTile extends StatelessWidget {
       subtitle: Text(
         entry.isOk
             ? '${entry.emailsFetched} new · ${entry.emailsSkipped} up-to-date · took $durationLabel'
-            : 'Error · took $durationLabel',
+            : 'Error${entry.isPermanent == true ? ' (permanent)' : ''} · took $durationLabel',
         style: TextStyle(fontSize: 12, color: entry.isOk ? null : errorColor),
       ),
+      trailing: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          IconButton(
+            icon: const Icon(Icons.copy, size: 18),
+            tooltip: 'Copy to clipboard',
+            onPressed: onCopy,
+          ),
+          const Icon(Icons.expand_more),
+        ],
+      ),
       children: [
         Padding(
           padding: const EdgeInsets.fromLTRB(72, 0, 16, 12),
@@ -171,6 +300,18 @@ class _SyncLogTile extends StatelessWidget {
                     style: TextStyle(color: errorColor, fontSize: 12),
                   ),
                 ),
+              if (entry.stackTrace != null)
+                Padding(
+                  padding: const EdgeInsets.only(top: 4),
+                  child: Text(
+                    entry.stackTrace!,
+                    style: TextStyle(
+                      color: errorColor,
+                      fontSize: 10,
+                      fontFamily: 'monospace',
+                    ),
+                  ),
+                ),
               if (entry.protocolLog != null) ...[
                 const Padding(
                   padding: EdgeInsets.only(top: 6, bottom: 2),

lib/ui/utils/about_markdown.dart

@@ -0,0 +1,73 @@
+import 'dart:io';
+
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter/material.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+const _gitHash = String.fromEnvironment('GIT_HASH');
+
+/// Returns Android device info (manufacturer, model, OS release).
+/// Returns an empty map on non-Android platforms or if the plugin fails.
+Future<Map<String, String>> fetchAndroidDeviceInfo() async {
+  if (!Platform.isAndroid) return {};
+  try {
+    final info = await DeviceInfoPlugin().androidInfo;
+    return {
+      'Manufacturer': info.manufacturer,
+      'Model': info.model,
+      'Android Version': info.version.release,
+    };
+  } catch (_) {
+    return {};
+  }
+}
+
+String _capitalize(String s) =>
+    s.isEmpty ? s : '${s[0].toUpperCase()}${s.substring(1)}';
+
+/// Builds the standard "about" markdown table for sharing / bug reports.
+///
+/// Pass [deviceInfo] from [fetchAndroidDeviceInfo].
+/// Pass [imapCount] and [jmapCount] when available; both default to 0.
+String buildAboutMarkdown(
+  BuildContext context,
+  PackageInfo? pkg,
+  int imapCount,
+  int jmapCount,
+  Map<String, String> deviceInfo,
+) {
+  final size = MediaQuery.of(context).size;
+  final pixelRatio = MediaQuery.of(context).devicePixelRatio;
+  final physW = (size.width * pixelRatio).toInt();
+  final physH = (size.height * pixelRatio).toInt();
+  final version = pkg != null ? '${pkg.version}+${pkg.buildNumber}' : 'unknown';
+  final versionDisplay = _gitHash.isNotEmpty
+      ? '[$version](https://codeberg.org/guettli/sharedinbox/commit/$_gitHash)'
+      : version;
+  final osName = _capitalize(Platform.operatingSystem);
+  final isDark = MediaQuery.of(context).platformBrightness == Brightness.dark;
+
+  final gitCommitLine = _gitHash.isNotEmpty
+      ? '| Git Commit | [$_gitHash](https://codeberg.org/guettli/sharedinbox/commit/$_gitHash) |\n'
+      : '';
+
+  final deviceLines =
+      deviceInfo.entries.map((e) => '| ${e.key} | ${e.value} |\n').join();
+
+  return '## [sharedinbox.de](https://sharedinbox.de)\n\n'
+      '| Property | Value |\n'
+      '|----------|-------|\n'
+      '| App Version | $versionDisplay |\n'
+      '$gitCommitLine'
+      '| Platform | ${Platform.operatingSystem} |\n'
+      '| $osName Version | ${Platform.operatingSystemVersion} |\n'
+      '$deviceLines'
+      '| Resolution | ${physW}x$physH px'
+      ' (logical: ${size.width.toInt()}x${size.height.toInt()} pt,'
+      ' ratio: ${pixelRatio.toStringAsFixed(1)}x) |\n'
+      '| Dart Version | ${Platform.version.split(' ').first} |\n'
+      '| Processors | ${Platform.numberOfProcessors} |\n'
+      '| Dark Mode | ${isDark ? 'yes' : 'no'} |\n'
+      '| IMAP Accounts | $imapCount |\n'
+      '| JMAP Accounts | $jmapCount |\n';
+}

pubspec.lock

@@ -249,6 +249,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.12"
+  device_info_plus:
+    dependency: "direct main"
+    description:
+      name: device_info_plus
+      sha256: "6a642e1daa10190af89ba6cb6386c0df7d071a3592080bfe1e44faa63ae1df65"
+      url: "https://pub.dev"
+    source: hosted
+    version: "13.1.0"
+  device_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: device_info_plus_platform_interface
+      sha256: "04b173a92e2d9161dfead145667037c8d834db725ce2e7b942bfe18fd2f45a46"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.1.0"
   drift:
     dependency: "direct main"
     description:
@@ -1284,6 +1300,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.3.0"
+  win32_registry:
+    dependency: transitive
+    description:
+      name: win32_registry
+      sha256: "73b1d78920a9d6e03f8b4e43e612b87bf3152a0e5c5e5150267762b7c4116904"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
   workmanager:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -61,6 +61,7 @@ dependencies:
   # App version metadata for crash reports
   package_info_plus: ^10.1.0
   share_plus: ^13.1.0
+  device_info_plus: ^13.1.0
 
 dev_dependencies:
   flutter_test:

scripts/check_coverage.dart

@@ -57,6 +57,7 @@ const _excluded = {
   'lib/ui/widgets/try_connection_button.dart',
   'lib/ui/widgets/undo_shell.dart',
   'lib/ui/screens/about_screen.dart',
+  'lib/ui/utils/about_markdown.dart',
   'lib/ui/widgets/email_tile.dart',
   'lib/core/sync/account_sync_manager.dart',
   'lib/core/sync/background_sync.dart',

test/backend/account_sync_manager_test.dart

@@ -288,6 +288,8 @@ class _FakeLogs implements SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,

test/unit/account_sync_manager_test.dart

@@ -181,6 +181,8 @@ class FakeSyncLogRepository implements SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,

test/unit/migration_test.dart

@@ -14,7 +14,7 @@ void main() {
   group('Migration', () {
     test('schemaVersion matches expected value', () async {
       final db = AppDatabase(NativeDatabase.memory());
-      expect(db.schemaVersion, 32);
+      expect(db.schemaVersion, 33);
       await db.close();
     });
 
@@ -194,6 +194,10 @@ void main() {
       // v32: local_sieve_applied table.
       await db.customSelect('SELECT count(*) FROM local_sieve_applied').get();
 
+      // v33: stack_trace and is_permanent columns on sync_logs.
+      final syncLogColumns = await _tableColumns(db, 'sync_logs');
+      expect(syncLogColumns, containsAll(['stack_trace', 'is_permanent']));
+
       await db.close();
       if (dbFile.existsSync()) dbFile.deleteSync();
     });
@@ -381,11 +385,15 @@ void main() {
           await _tableColumns(db, 'sync_log_mailboxes');
       expect(syncLogMailboxColumns, contains('duration_ms'));
 
+      // v33: stack_trace and is_permanent columns on sync_logs.
+      final syncLogColumns = await _tableColumns(db, 'sync_logs');
+      expect(syncLogColumns, containsAll(['stack_trace', 'is_permanent']));
+
       await db.close();
       if (dbFile.existsSync()) dbFile.deleteSync();
     });
 
-    test('fresh install creates all tables at schemaVersion 32', () async {
+    test('fresh install creates all tables at schemaVersion 33', () async {
       final db = AppDatabase(NativeDatabase.memory());
       await db.select(db.accounts).get();
 
@@ -426,6 +434,10 @@ void main() {
           await _tableColumns(db, 'sync_log_mailboxes');
       expect(syncLogMailboxColumns, contains('duration_ms'));
 
+      // v33: stack_trace and is_permanent columns on sync_logs.
+      final syncLogColumns = await _tableColumns(db, 'sync_logs');
+      expect(syncLogColumns, containsAll(['stack_trace', 'is_permanent']));
+
       await db.close();
     });
   });

test/unit/reliability_runner_test.dart

@@ -170,6 +170,8 @@ class _FakeSyncLog implements SyncLogRepository {
     required String accountId,
     required bool success,
     String? errorMessage,
+    String? stackTrace,
+    bool? isPermanent,
     required String protocol,
     required int emailsFetched,
     required int emailsSkipped,

test/unit/sync_log_repository_impl_test.dart

@@ -126,4 +126,56 @@ void main() {
     expect(rows.first.result, 'error');
     expect(rows.first.errorMessage, 'Connection refused');
   });
+
+  test('stores and retrieves stack trace and isPermanent', () async {
+    final repo = SyncLogRepositoryImpl(db);
+    final start = DateTime(2024, 3, 1, 10);
+    final end = DateTime(2024, 3, 1, 10, 0, 1);
+
+    await repo.log(
+      accountId: 'acc1',
+      success: false,
+      errorMessage: 'MissingPluginException',
+      stackTrace: '#0 MethodChannel._invokeMethod\n#1 main',
+      isPermanent: true,
+      protocol: 'imap',
+      emailsFetched: 0,
+      emailsSkipped: 0,
+      mailboxesSynced: 0,
+      pendingFlushed: 0,
+      bytesTransferred: 0,
+      startedAt: start,
+      finishedAt: end,
+    );
+
+    final entries = await repo.observeSyncLogs('acc1').first;
+    final latest = entries.firstWhere((e) => e.startedAt == start);
+    expect(latest.stackTrace, '#0 MethodChannel._invokeMethod\n#1 main');
+    expect(latest.isPermanent, isTrue);
+    expect(latest.errorMessage, 'MissingPluginException');
+  });
+
+  test('isPermanent is null for success entries', () async {
+    final repo = SyncLogRepositoryImpl(db);
+    final start = DateTime(2024, 4, 1, 10);
+    final end = DateTime(2024, 4, 1, 10, 0, 3);
+
+    await repo.log(
+      accountId: 'acc1',
+      success: true,
+      protocol: 'imap',
+      emailsFetched: 2,
+      emailsSkipped: 0,
+      mailboxesSynced: 1,
+      pendingFlushed: 0,
+      bytesTransferred: 0,
+      startedAt: start,
+      finishedAt: end,
+    );
+
+    final entries = await repo.observeSyncLogs('acc1').first;
+    final latest = entries.firstWhere((e) => e.startedAt == start);
+    expect(latest.isPermanent, isNull);
+    expect(latest.stackTrace, isNull);
+  });
 }