feat(workspace): sealed-area names are confidential by default

The switcher listed sealed areas by name ('lbs', 'stromnetz') on
any glance or screenshot — but the names themselves often carry
client/mandate identity (usertest security finding). The sealed
section now renders one aggregated row ('2 sealed areas') with a
deliberate 'Show names' reveal per menu opening; selection still
pops the regular s:<slug> value. Settings -> Security gains 'list
sealed areas with their names right away' (WorkspacePrefs,
SidebarPrefs pattern, default off).

The aggregate row wraps to two lines — popup menus cap their
width and action texts must never be truncated (the first cut
showed '1 abgeschotte…' in the proof shot). Guard: switcher tests
cover aggregated-until-reveal and the Settings toggle; the old
direct-listing test now asserts the reveal contract. DE+EN.

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

lib/l10n/app_localizations.dart

@@ -5545,6 +5545,30 @@ abstract class AppLocalizations {
   /// **'SEALED AREAS'**
   String get workspaceSealedHeader;
 
+  /// No description provided for @workspaceSealedAggregate.
+  ///
+  /// In en, this message translates to:
+  /// **'{n, plural, =1{1 sealed area} other{{n} sealed areas}}'**
+  String workspaceSealedAggregate(int n);
+
+  /// No description provided for @workspaceSealedRevealAction.
+  ///
+  /// In en, this message translates to:
+  /// **'Show names'**
+  String get workspaceSealedRevealAction;
+
+  /// No description provided for @settingsSealedNamesTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'List sealed areas with their names right away'**
+  String get settingsSealedNamesTitle;
+
+  /// No description provided for @settingsSealedNamesBody.
+  ///
+  /// In en, this message translates to:
+  /// **'Area names can be sensitive (client/mandate identity). By default the workspace switcher shows them aggregated; the names appear only after a click.'**
+  String get settingsSealedNamesBody;
+
   /// No description provided for @workspaceSealedRunning.
   ///
   /// In en, this message translates to: