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/data/hub_auth_token.dart

@@ -15,12 +15,10 @@ import 'package:path/path.dart' as p;
 /// based on its own `auth.tokens:` config.
 class HubAuthToken {
   static String _faiHome() {
-    final home = Platform.environment['HOME'] ??
-        Platform.environment['USERPROFILE'];
+    final home =
+        Platform.environment['HOME'] ?? Platform.environment['USERPROFILE'];
     if (home == null || home.isEmpty) {
-      throw StateError(
-        'Cannot resolve home directory (no HOME / USERPROFILE)',
-      );
+      throw StateError('Cannot resolve home directory (no HOME / USERPROFILE)');
     }
     return p.join(home, '.fai');
   }
@@ -79,7 +77,9 @@ class HubAuthToken {
     if ((Platform.isLinux || Platform.isMacOS) && !parentExisted) {
       try {
         await Process.run('chmod', ['700', parent.path]);
-      } catch (_) {/* best-effort */}
+      } catch (_) {
+        /* best-effort */
+      }
     }
     // Write to the temp path with restrictive mode set up
     // BEFORE the rename — the final file is never visible
@@ -88,7 +88,9 @@ class HubAuthToken {
     if (Platform.isLinux || Platform.isMacOS) {
       try {
         await Process.run('chmod', ['600', tmp.path]);
-      } catch (_) {/* best-effort */}
+      } catch (_) {
+        /* best-effort */
+      }
     }
     // Atomic rename: on POSIX, replaces the destination
     // in one syscall. On Windows, Dart's File.rename uses
@@ -105,7 +107,9 @@ class HubAuthToken {
       if (Platform.isLinux || Platform.isMacOS) {
         try {
           await Process.run('chmod', ['600', f.path]);
-        } catch (_) {/* best-effort */}
+        } catch (_) {
+          /* best-effort */
+        }
       }
       await tmp.delete();
     }

lib/data/registry_token.dart

@@ -10,7 +10,8 @@ import 'package:path/path.dart' as p;
 /// requires the operator to fiddle with shell env vars.
 class RegistryToken {
   static String _faiHome() {
-    final home = Platform.environment['HOME'] ?? Platform.environment['USERPROFILE'];
+    final home =
+        Platform.environment['HOME'] ?? Platform.environment['USERPROFILE'];
     if (home == null || home.isEmpty) {
       throw StateError('Cannot resolve home directory (no HOME / USERPROFILE)');
     }

lib/data/system_actions.dart

@@ -152,7 +152,8 @@ class SystemActions {
       return (
         ok: false,
         stdout: '',
-        stderr: 'Could not locate the `fai` binary. Install via the '
+        stderr:
+            'Could not locate the `fai` binary. Install via the '
             'platform installer or set FAI_BIN to its full path.',
       );
     }

lib/data/theme_plugin.dart

@@ -39,8 +39,9 @@ class ThemePluginSchemes {
 Future<List<String>> listThemePluginCapabilities() async {
   final caps = await HubService.instance.allCapabilities();
   return caps
-      .where((c) =>
-          c.kind == 'wasm' && c.capability.startsWith('studio.theme.'))
+      .where(
+        (c) => c.kind == 'wasm' && c.capability.startsWith('studio.theme.'),
+      )
       .map((c) => c.capability)
       .toList()
     ..sort();
@@ -121,6 +122,7 @@ ColorScheme _tokensToColorScheme(List<int> tokens, Brightness brightness) {
         ? const Color(0xFF1A1A1A)
         : const Color(0xFFEEEEEE);
   }
+
   return ColorScheme(
     brightness: brightness,
     primary: slot(0),

lib/data/today_story_loader.dart

@@ -58,7 +58,8 @@ class TodayStoryLoader {
   /// Resolves to `~/.fai/today/active.yaml` on every supported
   /// host. The pipeline writes here from [tools/today/accept.sh].
   static String activePath() {
-    final home = Platform.environment['HOME'] ??
+    final home =
+        Platform.environment['HOME'] ??
         Platform.environment['USERPROFILE'] ??
         '';
     return p.join(home, '.fai', 'today', 'active.yaml');
@@ -89,8 +90,8 @@ class TodayStoryLoader {
 
     String s(String key) => (doc[key] ?? '').toString().trim();
     if (_bannedWords.hasMatch(
-          '${s('title_en')} ${s('title_de')} ${s('body_en')} ${s('body_de')}',
-        )) {
+      '${s('title_en')} ${s('title_de')} ${s('body_en')} ${s('body_de')}',
+    )) {
       return null;
     }