chore(#19): dart format baseline (whitespace-only)

Run dart format across the repo to clean drift in 5 files (channel_chat_screen, settings_screen, settings_shell, gif_picker, mention_autocomplete) from earlier straight-to-dev commits that never hit the format CI. No logic change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/screens/channel_chat_screen.dart

@@ -687,7 +687,8 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                             ],
                           ],
                         ),
-                      if (message.hopCount != null && message.hopCount! > 0) ...[
+                      if (message.hopCount != null &&
+                          message.hopCount! > 0) ...[
                         const SizedBox(height: 4),
                         _buildHopBadge(context, message),
                       ],
@@ -1312,7 +1313,9 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
       }
     }
     recentTime.forEach((name, time) {
-      candidates.add(MentionCandidate(name: name, recent: true, lastSeen: time));
+      candidates.add(
+        MentionCandidate(name: name, recent: true, lastSeen: time),
+      );
       seen.add(name.toLowerCase());
     });
 
@@ -1445,8 +1448,9 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     _ensureDateFormats(context);
     final now = DateTime.now();
     final today = DateTime(now.year, now.month, now.day);
-    final daysAgo =
-        today.difference(DateTime(time.year, time.month, time.day)).inDays;
+    final daysAgo = today
+        .difference(DateTime(time.year, time.month, time.day))
+        .inDays;
     final label = daysAgo == 0
         ? 'Today'
         : daysAgo == 1

lib/screens/settings/settings_shell.dart

@@ -84,8 +84,9 @@ class _SettingsShellState extends State<SettingsShell> {
                     leading: Icon(category.icon),
                     title: Text(category.title),
                     selected: i == selected,
-                    selectedTileColor:
-                        Theme.of(context).colorScheme.surfaceContainerHighest,
+                    selectedTileColor: Theme.of(
+                      context,
+                    ).colorScheme.surfaceContainerHighest,
                     onTap: () => setState(() => _selected = i),
                   );
                 },
@@ -117,8 +118,9 @@ class _SettingsShellState extends State<SettingsShell> {
             return ListTile(
               leading: Icon(category.icon),
               title: Text(category.title),
-              subtitle:
-                  category.subtitle != null ? Text(category.subtitle!) : null,
+              subtitle: category.subtitle != null
+                  ? Text(category.subtitle!)
+                  : null,
               trailing: const Icon(Icons.chevron_right),
               onTap: () => _openDetail(context, category),
             );

lib/screens/settings_screen.dart

@@ -143,7 +143,8 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 title: Text(l10n.radioStats_settingsTile),
                 subtitle: Text(l10n.radioStats_settingsSubtitle),
                 trailing: const Icon(Icons.chevron_right),
-                enabled: connector.isConnected &&
+                enabled:
+                    connector.isConnected &&
                     connector.supportsCompanionRadioStats,
                 onTap: () => pushCompanionRadioStatsScreen(context),
               ),
@@ -167,8 +168,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
               ListTile(
                 leading: const Icon(Icons.person_outline),
                 title: Text(l10n.settings_nodeName),
-                subtitle:
-                    Text(connector.selfName ?? l10n.settings_nodeNameNotSet),
+                subtitle: Text(
+                  connector.selfName ?? l10n.settings_nodeNameNotSet,
+                ),
                 trailing: const Icon(Icons.chevron_right),
                 onTap: () => _editNodeName(context, connector),
               ),

lib/widgets/gif_picker.dart

@@ -22,8 +22,7 @@ class _GifPickerState extends State<GifPicker> {
   // Giphy API key — injected at build time, never hardcoded. Provide it via:
   //   flutter build ... --dart-define-from-file=dart_defines.json
   // (or --dart-define=GIPHY_API_KEY=<key>). Empty when unset → the picker shows a hint.
-  static const String _giphyApiKey =
-      String.fromEnvironment('GIPHY_API_KEY');
+  static const String _giphyApiKey = String.fromEnvironment('GIPHY_API_KEY');
 
   @override
   void initState() {
@@ -39,8 +38,10 @@ class _GifPickerState extends State<GifPicker> {
 
   Future<void> _loadTrendingGifs() async {
     if (_giphyApiKey.isEmpty) {
-      setState(() => _error =
-          'GIF picker needs a Giphy API key (build with --dart-define=GIPHY_API_KEY=<key>).');
+      setState(
+        () => _error =
+            'GIF picker needs a Giphy API key (build with --dart-define=GIPHY_API_KEY=<key>).',
+      );
       return;
     }
     setState(() {

lib/widgets/mention_autocomplete.dart

@@ -26,7 +26,12 @@ class _Entry {
   final String? emoji; // leading glyph (emoji rows)
   final IconData? icon; // leading icon (mention rows)
   final String insert; // replacement text for the trigger token
-  const _Entry({required this.label, this.emoji, this.icon, required this.insert});
+  const _Entry({
+    required this.label,
+    this.emoji,
+    this.icon,
+    required this.insert,
+  });
 }
 
 /// Wraps [ByteCountedTextField] with autocomplete for `@`-mentions and
@@ -287,7 +292,13 @@ class _MentionAutocompleteFieldState extends State<MentionAutocompleteField> {
     // Best 8, then reversed so the best sits at the bottom (nearest the input).
     final top = names.take(8).toList().reversed.toList();
     _matches = top
-        .map((k) => _Entry(label: ':$k:', emoji: shortcodes[k], insert: shortcodes[k]!))
+        .map(
+          (k) => _Entry(
+            label: ':$k:',
+            emoji: shortcodes[k],
+            insert: shortcodes[k]!,
+          ),
+        )
         .toList();
     _recentStart = _matches.length; // no divider for emoji
     _highlighted = _matches.length - 1;
@@ -390,7 +401,9 @@ class _MentionAutocompleteFieldState extends State<MentionAutocompleteField> {
 
     final children = <Widget>[];
     for (var i = 0; i < _matches.length; i++) {
-      if (i == _recentStart && _recentStart > 0 && _recentStart < _matches.length) {
+      if (i == _recentStart &&
+          _recentStart > 0 &&
+          _recentStart < _matches.length) {
         children.add(_recentDivider(theme));
       }
       final e = _matches[i];
@@ -422,8 +435,9 @@ class _MentionAutocompleteFieldState extends State<MentionAutocompleteField> {
                     overflow: TextOverflow.ellipsis,
                     style: TextStyle(
                       fontSize: 13,
-                      fontWeight:
-                          selected ? FontWeight.w600 : FontWeight.normal,
+                      fontWeight: selected
+                          ? FontWeight.w600
+                          : FontWeight.normal,
                     ),
                   ),
                 ),