feat(studio): rich theme picker (presets + custom colour) + editor 0.11.0

Settings dialog's Theme Plugin section is now a grid of
swatched tiles:

- Built-in (none) — falls back to FaiTheme.light/.dark
- One tile per installed studio.theme.* plugin, each
  showing the plugin's primary/secondary/tertiary as
  live colour dots. Tile loads its preview lazily so a
  dozen installed themes don't block the picker.
- Custom — opens a colour-picker dialog with 12 curated
  Material presets + a hex input + live preview. Selecting
  applies ColorScheme.fromSeed for both brightnesses.

main.dart's _pluginThemes parses a 'custom:#RRGGBB' sigil
in the same notifier slot as plugin capability ids, so the
existing persistence + restoration paths cover the custom
case with no new state.

Bumps editor to 0.11.0 (type-checked port connections +
dynamic card width fix + card-height border allowance) and
Studio to 0.58.0.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/pages/modules.dart

@@ -32,9 +32,9 @@ class _ModulesPageState extends State<ModulesPage> {
   }
 
   void _refresh() => setState(() {
-        _future = HubService.instance.listModules();
-        _historyFuture = _loadHistory();
-      });
+    _future = HubService.instance.listModules();
+    _historyFuture = _loadHistory();
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -87,8 +87,10 @@ class _ModulesPageState extends State<ModulesPage> {
                 if (i > 0) const SizedBox(height: FaiSpace.md),
                 GestureDetector(
                   onTap: () async {
-                    final uninstalled =
-                        await FaiModuleSheet.show(context, modules[i].name);
+                    final uninstalled = await FaiModuleSheet.show(
+                      context,
+                      modules[i].name,
+                    );
                     if (uninstalled) _refresh();
                   },
                   behavior: HitTestBehavior.opaque,
@@ -171,7 +173,6 @@ class _ModuleCard extends StatelessWidget {
   }
 }
 
-
 /// Compact "Recent activity" header listing the last few
 /// install / uninstall events from the audit log. Lets
 /// operators trace "wait, when did that module appear?"
@@ -220,8 +221,9 @@ class _RecentActivityPanel extends StatelessWidget {
                   ),
                   const SizedBox(width: FaiSpace.sm),
                   Text(
-                    AppLocalizations.of(context)!
-                        .modulesRecentActivityHint(events.length),
+                    AppLocalizations.of(
+                      context,
+                    )!.modulesRecentActivityHint(events.length),
                     style: theme.textTheme.bodySmall?.copyWith(
                       color: theme.colorScheme.onSurfaceVariant,
                     ),
@@ -292,7 +294,8 @@ String _formatTimestamp(DateTime local) {
   final mm = local.minute.toString().padLeft(2, '0');
   final ss = local.second.toString().padLeft(2, '0');
   final time = '$hh:$mm:$ss';
-  final sameDay = local.year == now.year &&
+  final sameDay =
+      local.year == now.year &&
       local.month == now.month &&
       local.day == now.day;
   if (sameDay) return time;