feat(studio): show module origin store ('from <store>')

StoreItem gains source (mapped from StoreEntry.source); the store grid
shows a 'from <store>' label for operator-added stores (bundled seed
unlabelled). Foundation for grouping by store. EN+DE l10n.

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

lib/data/hub.dart

@@ -786,6 +786,7 @@ class HubService {
             kind: e.kind,
             provider: e.provider,
             sourceKind: e.sourceKind,
+            source: e.source,
           ),
         )
         .toList();
@@ -1793,6 +1794,12 @@ class StoreItem {
   /// from `kind` for pre-0.12 hubs.
   final String sourceKind;
 
+  /// Name of the store this entry came from ("bundled" for the built-in
+  /// seed, otherwise the operator-added store's name). Distinct from
+  /// `sourceKind` (the transport) — this is the ORIGIN store, used to
+  /// label and group modules by where they came from.
+  final String source;
+
   bool get isFederated => kind == 'federated';
 
   const StoreItem({
@@ -1817,5 +1824,6 @@ class StoreItem {
     required this.kind,
     required this.provider,
     this.sourceKind = '',
+    this.source = '',
   });
 }

lib/l10n/app_de.arb

@@ -2,6 +2,7 @@
   "@@locale": "de",
   "errModuleDownload": "Modul-Download fehlgeschlagen",
   "errModuleDownloadHint": "Die Bundle-URL des Moduls ist nicht erreichbar (Statuscode unten). Der Hub läuft — URL/Host korrigieren oder anderen Store wählen.",
+  "storeFromSource": "aus {store}",
   "guidedSetupTitle": "Setup-Assistent",
   "guidedSetupIntro": "Beantworte drei Fragen — Ch∆In stellt passende Konfiguration, Modul-Set und Start-Flow zusammen.",
   "guidedSetupScenario": "Szenario",

lib/l10n/app_en.arb

@@ -2,6 +2,12 @@
   "@@locale": "en",
   "errModuleDownload": "Module download failed",
   "errModuleDownloadHint": "The module's bundle URL is unreachable (status code below). The hub is running fine — fix the URL/host or choose another store.",
+  "storeFromSource": "from {store}",
+  "@storeFromSource": {
+    "placeholders": {
+      "store": { "type": "String" }
+    }
+  },
   "guidedSetupTitle": "Setup assistant",
   "guidedSetupIntro": "Answer three questions and Ch∆In assembles a tailored config, module set and starter flow.",
   "guidedSetupScenario": "Scenario",

lib/l10n/app_localizations.dart

@@ -110,6 +110,12 @@ abstract class AppLocalizations {
   /// **'The module\'s bundle URL is unreachable (status code below). The hub is running fine — fix the URL/host or choose another store.'**
   String get errModuleDownloadHint;
 
+  /// No description provided for @storeFromSource.
+  ///
+  /// In en, this message translates to:
+  /// **'from {store}'**
+  String storeFromSource(String store);
+
   /// No description provided for @guidedSetupTitle.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_de.dart

@@ -15,6 +15,11 @@ class AppLocalizationsDe extends AppLocalizations {
   String get errModuleDownloadHint =>
       'Die Bundle-URL des Moduls ist nicht erreichbar (Statuscode unten). Der Hub läuft — URL/Host korrigieren oder anderen Store wählen.';
 
+  @override
+  String storeFromSource(String store) {
+    return 'aus $store';
+  }
+
   @override
   String get guidedSetupTitle => 'Setup-Assistent';
 

lib/l10n/app_localizations_en.dart

@@ -15,6 +15,11 @@ class AppLocalizationsEn extends AppLocalizations {
   String get errModuleDownloadHint =>
       'The module\'s bundle URL is unreachable (status code below). The hub is running fine — fix the URL/host or choose another store.';
 
+  @override
+  String storeFromSource(String store) {
+    return 'from $store';
+  }
+
   @override
   String get guidedSetupTitle => 'Setup assistant';
 

lib/pages/store.dart

@@ -1930,6 +1930,19 @@ class _StoreCardState extends State<_StoreCard> {
                                   color: theme.colorScheme.onSurfaceVariant,
                                 ),
                               ),
+                              // Origin store ("from <store>") — only for
+                              // operator-added stores; the built-in seed
+                              // ("bundled") needs no label.
+                              if (item.source.isNotEmpty &&
+                                  item.source != 'bundled')
+                                Text(
+                                  l.storeFromSource(item.source),
+                                  maxLines: 1,
+                                  overflow: TextOverflow.ellipsis,
+                                  style: theme.textTheme.labelSmall?.copyWith(
+                                    color: theme.colorScheme.onSurfaceVariant,
+                                  ),
+                                ),
                             ],
                           ),
                         ),