feat(studio): clearer store + channel switcher + approvals & welcome polish

- store: repair the filter dialog crash (a Spacer lived directly in
  AlertDialog.actions, which is an OverflowBar, not a Flex — it threw
  and rendered a broken dialog). Buttons now sit in a Row.
- store: promote the module-store manager from a bare icon to a
  labelled 'Add store' button, and fully localize the dialog (DE/EN).
- store: add a curated 'Suggested stores' shelf with one-click
  add/remove (first entry: Recl∆Im). Each suggestion is probed for
  reachability and shows 'not available yet' until its index is
  published, instead of failing only on click. Fail-open on network
  errors so a transient hiccup never hides a real store.
- sidebar: the channel pill is now a one-click channel switcher
  (menu with per-channel running state + active check; switching
  writes ~/.chain/current-channel, restarts the daemon, and Studio
  repoints to the new channel).
- approvals: lead the card with the human prompt ('what am I
  releasing?') and demote the flow/step id to a metadata line; clear
  fallback when the step left the prompt empty.
- welcome: tidy the docs grid into equal-height paired rows with a
  full-width trailing card for the odd one out.

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

lib/l10n/app_de.arb

@@ -81,7 +81,7 @@
   "connectionStartHub": "Hub starten",
   "connectionTapToStart": "antippen zum Starten",
   "sidebarSettingsTooltip": "Einstellungen (⌘;)",
-  "sidebarChannelTooltip": "Aktiver Kanal — klicken um in Einstellungen (⌘;) zu wechseln.\nproduction = stabil · beta = Vorabversion · dev = laufend · local = Arbeitsumgebung",
+  "sidebarChannelTooltip": "Aktiver Kanal — klicken zum Wechseln.\nproduction = stabil · beta = Vorabversion · dev = laufend · local = Arbeitsumgebung",
   "buttonCancel": "Abbrechen",
   "buttonSave": "Speichern",
   "buttonClose": "Schließen",
@@ -319,6 +319,22 @@
     }
   },
   "storeReloadTooltip": "Aktualisieren",
+  "storesManagerButton": "Store hinzufügen",
+  "storesManagerTitle": "Module-Stores",
+  "storesManagerIntro": "Der Hub führt die Module aller Stores unten zu einem Index zusammen. Füge die Index-URL eines Stores hinzu, damit seine Module hier installierbar werden.",
+  "storesManagerAddSection": "Store hinzufügen",
+  "storesManagerNameLabel": "Name",
+  "storesManagerUrlLabel": "Index-URL (https:// oder file://)",
+  "storesManagerAddAction": "Hinzufügen",
+  "storesManagerBundled": "{count} Module · gebündelt",
+  "storesManagerModuleCount": "{count} Module",
+  "storesManagerAddFailed": "Store konnte nicht hinzugefügt werden",
+  "storesManagerRemoveFailed": "Store konnte nicht entfernt werden",
+  "storesManagerSuggested": "Vorgeschlagene Stores",
+  "storesManagerAddShort": "Hinzufügen",
+  "storesManagerNotAvailable": "Noch nicht verfügbar",
+  "storesManagerNotAvailableHint": "Der Anbieter hat diesen Store-Index noch nicht veröffentlicht. Sobald er das tut, ist er installierbar.",
+  "storesSuggestedReclaimDesc": "Recl∆Im — Module für Rechts- und Pflichten-Reform-Mapping",
   "storeTodayBadge": "HEUTE",
   "storeTodayDeck": "Von der Ch∆In-Redaktion",
   "storeTodayDismissTooltip": "Für diese Sitzung ausblenden",
@@ -998,7 +1014,9 @@
   "approvalsPillApproved": "freigegeben",
   "approvalsPillRejected": "abgelehnt",
   "approvalsPillExpired": "abgelaufen",
-  "approvalsPayloadPreview": "PAYLOAD-VORSCHAU",
+  "approvalsPayloadPreview": "DIESE DATEN WERDEN FREIGEGEBEN",
+  "approvalsRequestFallback": "Freigabe für diesen Schritt erforderlich",
+  "approvalsFlowStepMeta": "Flow: {flow} · Schritt: {step}",
   "approvalsApproveButton": "Freigeben",
   "approvalsRejectButton": "Ablehnen",
   "approvalsRejectDialogTitle": "Freigabe ablehnen",

lib/l10n/app_en.arb

@@ -84,7 +84,7 @@
   "connectionStartHub": "Start hub",
   "connectionTapToStart": "tap to start",
   "sidebarSettingsTooltip": "Settings (⌘;)",
-  "sidebarChannelTooltip": "Active channel — click to switch in Settings (⌘;).\nproduction = stable · beta = pre-release · dev = rolling · local = workspace",
+  "sidebarChannelTooltip": "Active channel — click to switch.\nproduction = stable · beta = pre-release · dev = rolling · local = workspace",
   "buttonCancel": "Cancel",
   "buttonSave": "Save",
   "buttonClose": "Close",
@@ -322,6 +322,32 @@
     }
   },
   "storeReloadTooltip": "Reload",
+  "storesManagerButton": "Add store",
+  "storesManagerTitle": "Module stores",
+  "storesManagerIntro": "The hub merges the modules from every store below into one index. Add a store's index URL to make its modules installable here.",
+  "storesManagerAddSection": "Add a store",
+  "storesManagerNameLabel": "Name",
+  "storesManagerUrlLabel": "Index URL (https:// or file://)",
+  "storesManagerAddAction": "Add store",
+  "storesManagerBundled": "{count} modules · bundled",
+  "@storesManagerBundled": {
+    "placeholders": {
+      "count": { "type": "int" }
+    }
+  },
+  "storesManagerModuleCount": "{count} modules",
+  "@storesManagerModuleCount": {
+    "placeholders": {
+      "count": { "type": "int" }
+    }
+  },
+  "storesManagerAddFailed": "Could not add store",
+  "storesManagerRemoveFailed": "Could not remove store",
+  "storesManagerSuggested": "Suggested stores",
+  "storesManagerAddShort": "Add",
+  "storesManagerNotAvailable": "Not available yet",
+  "storesManagerNotAvailableHint": "The provider hasn't published this store index yet. It will become installable once they do.",
+  "storesSuggestedReclaimDesc": "Recl∆Im — modules for law & duty reform-mapping",
   "storeTodayBadge": "TODAY",
   "storeTodayDeck": "From the Ch∆In editor",
   "storeTodayDismissTooltip": "Hide for this session",
@@ -1001,7 +1027,15 @@
   "approvalsPillApproved": "approved",
   "approvalsPillRejected": "rejected",
   "approvalsPillExpired": "expired",
-  "approvalsPayloadPreview": "PAYLOAD PREVIEW",
+  "approvalsPayloadPreview": "DATA TO BE RELEASED",
+  "approvalsRequestFallback": "Approval required for this step",
+  "approvalsFlowStepMeta": "Flow: {flow} · Step: {step}",
+  "@approvalsFlowStepMeta": {
+    "placeholders": {
+      "flow": { "type": "String" },
+      "step": { "type": "String" }
+    }
+  },
   "approvalsApproveButton": "Approve",
   "approvalsRejectButton": "Reject",
   "approvalsRejectDialogTitle": "Reject approval",

lib/l10n/app_localizations.dart

@@ -545,7 +545,7 @@ abstract class AppLocalizations {
   /// No description provided for @sidebarChannelTooltip.
   ///
   /// In en, this message translates to:
-  /// **'Active channel — click to switch in Settings (⌘;).\nproduction = stable · beta = pre-release · dev = rolling · local = workspace'**
+  /// **'Active channel — click to switch.\nproduction = stable · beta = pre-release · dev = rolling · local = workspace'**
   String get sidebarChannelTooltip;
 
   /// No description provided for @buttonCancel.
@@ -1436,6 +1436,102 @@ abstract class AppLocalizations {
   /// **'Reload'**
   String get storeReloadTooltip;
 
+  /// No description provided for @storesManagerButton.
+  ///
+  /// In en, this message translates to:
+  /// **'Add store'**
+  String get storesManagerButton;
+
+  /// No description provided for @storesManagerTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Module stores'**
+  String get storesManagerTitle;
+
+  /// No description provided for @storesManagerIntro.
+  ///
+  /// In en, this message translates to:
+  /// **'The hub merges the modules from every store below into one index. Add a store\'s index URL to make its modules installable here.'**
+  String get storesManagerIntro;
+
+  /// No description provided for @storesManagerAddSection.
+  ///
+  /// In en, this message translates to:
+  /// **'Add a store'**
+  String get storesManagerAddSection;
+
+  /// No description provided for @storesManagerNameLabel.
+  ///
+  /// In en, this message translates to:
+  /// **'Name'**
+  String get storesManagerNameLabel;
+
+  /// No description provided for @storesManagerUrlLabel.
+  ///
+  /// In en, this message translates to:
+  /// **'Index URL (https:// or file://)'**
+  String get storesManagerUrlLabel;
+
+  /// No description provided for @storesManagerAddAction.
+  ///
+  /// In en, this message translates to:
+  /// **'Add store'**
+  String get storesManagerAddAction;
+
+  /// No description provided for @storesManagerBundled.
+  ///
+  /// In en, this message translates to:
+  /// **'{count} modules · bundled'**
+  String storesManagerBundled(int count);
+
+  /// No description provided for @storesManagerModuleCount.
+  ///
+  /// In en, this message translates to:
+  /// **'{count} modules'**
+  String storesManagerModuleCount(int count);
+
+  /// No description provided for @storesManagerAddFailed.
+  ///
+  /// In en, this message translates to:
+  /// **'Could not add store'**
+  String get storesManagerAddFailed;
+
+  /// No description provided for @storesManagerRemoveFailed.
+  ///
+  /// In en, this message translates to:
+  /// **'Could not remove store'**
+  String get storesManagerRemoveFailed;
+
+  /// No description provided for @storesManagerSuggested.
+  ///
+  /// In en, this message translates to:
+  /// **'Suggested stores'**
+  String get storesManagerSuggested;
+
+  /// No description provided for @storesManagerAddShort.
+  ///
+  /// In en, this message translates to:
+  /// **'Add'**
+  String get storesManagerAddShort;
+
+  /// No description provided for @storesManagerNotAvailable.
+  ///
+  /// In en, this message translates to:
+  /// **'Not available yet'**
+  String get storesManagerNotAvailable;
+
+  /// No description provided for @storesManagerNotAvailableHint.
+  ///
+  /// In en, this message translates to:
+  /// **'The provider hasn\'t published this store index yet. It will become installable once they do.'**
+  String get storesManagerNotAvailableHint;
+
+  /// No description provided for @storesSuggestedReclaimDesc.
+  ///
+  /// In en, this message translates to:
+  /// **'Recl∆Im — modules for law & duty reform-mapping'**
+  String get storesSuggestedReclaimDesc;
+
   /// No description provided for @storeTodayBadge.
   ///
   /// In en, this message translates to:
@@ -2969,9 +3065,21 @@ abstract class AppLocalizations {
   /// No description provided for @approvalsPayloadPreview.
   ///
   /// In en, this message translates to:
-  /// **'PAYLOAD PREVIEW'**
+  /// **'DATA TO BE RELEASED'**
   String get approvalsPayloadPreview;
 
+  /// No description provided for @approvalsRequestFallback.
+  ///
+  /// In en, this message translates to:
+  /// **'Approval required for this step'**
+  String get approvalsRequestFallback;
+
+  /// No description provided for @approvalsFlowStepMeta.
+  ///
+  /// In en, this message translates to:
+  /// **'Flow: {flow} · Step: {step}'**
+  String approvalsFlowStepMeta(String flow, String step);
+
   /// No description provided for @approvalsApproveButton.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_de.dart

@@ -261,7 +261,7 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get sidebarChannelTooltip =>
-      'Aktiver Kanal — klicken um in Einstellungen (⌘;) zu wechseln.\nproduction = stabil · beta = Vorabversion · dev = laufend · local = Arbeitsumgebung';
+      'Aktiver Kanal — klicken zum Wechseln.\nproduction = stabil · beta = Vorabversion · dev = laufend · local = Arbeitsumgebung';
 
   @override
   String get buttonCancel => 'Abbrechen';
@@ -771,6 +771,61 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get storeReloadTooltip => 'Aktualisieren';
 
+  @override
+  String get storesManagerButton => 'Store hinzufügen';
+
+  @override
+  String get storesManagerTitle => 'Module-Stores';
+
+  @override
+  String get storesManagerIntro =>
+      'Der Hub führt die Module aller Stores unten zu einem Index zusammen. Füge die Index-URL eines Stores hinzu, damit seine Module hier installierbar werden.';
+
+  @override
+  String get storesManagerAddSection => 'Store hinzufügen';
+
+  @override
+  String get storesManagerNameLabel => 'Name';
+
+  @override
+  String get storesManagerUrlLabel => 'Index-URL (https:// oder file://)';
+
+  @override
+  String get storesManagerAddAction => 'Hinzufügen';
+
+  @override
+  String storesManagerBundled(int count) {
+    return '$count Module · gebündelt';
+  }
+
+  @override
+  String storesManagerModuleCount(int count) {
+    return '$count Module';
+  }
+
+  @override
+  String get storesManagerAddFailed => 'Store konnte nicht hinzugefügt werden';
+
+  @override
+  String get storesManagerRemoveFailed => 'Store konnte nicht entfernt werden';
+
+  @override
+  String get storesManagerSuggested => 'Vorgeschlagene Stores';
+
+  @override
+  String get storesManagerAddShort => 'Hinzufügen';
+
+  @override
+  String get storesManagerNotAvailable => 'Noch nicht verfügbar';
+
+  @override
+  String get storesManagerNotAvailableHint =>
+      'Der Anbieter hat diesen Store-Index noch nicht veröffentlicht. Sobald er das tut, ist er installierbar.';
+
+  @override
+  String get storesSuggestedReclaimDesc =>
+      'Recl∆Im — Module für Rechts- und Pflichten-Reform-Mapping';
+
   @override
   String get storeTodayBadge => 'HEUTE';
 
@@ -1712,7 +1767,16 @@ class AppLocalizationsDe extends AppLocalizations {
   String get approvalsPillExpired => 'abgelaufen';
 
   @override
-  String get approvalsPayloadPreview => 'PAYLOAD-VORSCHAU';
+  String get approvalsPayloadPreview => 'DIESE DATEN WERDEN FREIGEGEBEN';
+
+  @override
+  String get approvalsRequestFallback =>
+      'Freigabe für diesen Schritt erforderlich';
+
+  @override
+  String approvalsFlowStepMeta(String flow, String step) {
+    return 'Flow: $flow · Schritt: $step';
+  }
 
   @override
   String get approvalsApproveButton => 'Freigeben';

lib/l10n/app_localizations_en.dart

@@ -260,7 +260,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get sidebarChannelTooltip =>
-      'Active channel — click to switch in Settings (⌘;).\nproduction = stable · beta = pre-release · dev = rolling · local = workspace';
+      'Active channel — click to switch.\nproduction = stable · beta = pre-release · dev = rolling · local = workspace';
 
   @override
   String get buttonCancel => 'Cancel';
@@ -789,6 +789,61 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get storeReloadTooltip => 'Reload';
 
+  @override
+  String get storesManagerButton => 'Add store';
+
+  @override
+  String get storesManagerTitle => 'Module stores';
+
+  @override
+  String get storesManagerIntro =>
+      'The hub merges the modules from every store below into one index. Add a store\'s index URL to make its modules installable here.';
+
+  @override
+  String get storesManagerAddSection => 'Add a store';
+
+  @override
+  String get storesManagerNameLabel => 'Name';
+
+  @override
+  String get storesManagerUrlLabel => 'Index URL (https:// or file://)';
+
+  @override
+  String get storesManagerAddAction => 'Add store';
+
+  @override
+  String storesManagerBundled(int count) {
+    return '$count modules · bundled';
+  }
+
+  @override
+  String storesManagerModuleCount(int count) {
+    return '$count modules';
+  }
+
+  @override
+  String get storesManagerAddFailed => 'Could not add store';
+
+  @override
+  String get storesManagerRemoveFailed => 'Could not remove store';
+
+  @override
+  String get storesManagerSuggested => 'Suggested stores';
+
+  @override
+  String get storesManagerAddShort => 'Add';
+
+  @override
+  String get storesManagerNotAvailable => 'Not available yet';
+
+  @override
+  String get storesManagerNotAvailableHint =>
+      'The provider hasn\'t published this store index yet. It will become installable once they do.';
+
+  @override
+  String get storesSuggestedReclaimDesc =>
+      'Recl∆Im — modules for law & duty reform-mapping';
+
   @override
   String get storeTodayBadge => 'TODAY';
 
@@ -1722,7 +1777,15 @@ class AppLocalizationsEn extends AppLocalizations {
   String get approvalsPillExpired => 'expired';
 
   @override
-  String get approvalsPayloadPreview => 'PAYLOAD PREVIEW';
+  String get approvalsPayloadPreview => 'DATA TO BE RELEASED';
+
+  @override
+  String get approvalsRequestFallback => 'Approval required for this step';
+
+  @override
+  String approvalsFlowStepMeta(String flow, String step) {
+    return 'Flow: $flow · Step: $step';
+  }
 
   @override
   String get approvalsApproveButton => 'Approve';

lib/main.dart

@@ -5,6 +5,7 @@
 
 import 'dart:async';
 
+import 'package:chain_client_sdk/chain_client_sdk.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
@@ -931,15 +932,12 @@ class _SidebarState extends State<_Sidebar>
   }
 }
 
-/// Active-channel indicator. Click to open Settings (where the
-/// operator can switch). Color-coded so production deployments
-/// look visibly different from local-dev — the kind of thing
-/// you want to see before clicking "Clear log".
-class _ChannelPill extends StatelessWidget {
-  final String channel;
-  const _ChannelPill({required this.channel});
-
-  Color _accent(ColorScheme cs) {
+/// Accent colour for a channel name. Color-coded so production
+/// deployments look visibly different from local-dev — the kind of
+/// thing you want to see before clicking "Clear log". Shared by the
+/// pill, the collapsed chip, and the switch menu so all three stay
+/// in lockstep.
+Color _channelAccent(String channel, ColorScheme cs) {
   switch (channel) {
     case 'production':
       // "Live & healthy", not an error — red here read as a fault.
@@ -952,9 +950,9 @@ class _ChannelPill extends StatelessWidget {
     default:
       return cs.onSurfaceVariant;
   }
-  }
+}
 
-  IconData get _icon {
+IconData _channelIcon(String channel) {
   switch (channel) {
     case 'production':
       return Icons.shield_outlined;
@@ -966,12 +964,168 @@ class _ChannelPill extends StatelessWidget {
     default:
       return Icons.home_work_outlined;
   }
+}
+
+/// Open the channel-switch menu anchored at [anchor]'s widget, then
+/// act on the selection. Switching runs `chain channel switch`
+/// (writes `~/.chain/current-channel` AND restarts that channel's
+/// daemon), then repoints Studio's wire at the new channel so the
+/// connection follows the switch immediately — the 5s health poll
+/// then refreshes the active-channel label. Shared by the expanded
+/// pill and the collapsed chip.
+///
+/// Falls back to the full Settings dialog when the hub is down (the
+/// snapshot RPC fails) so the operator can still pick + start a
+/// channel from there.
+Future<void> _showChannelSwitchMenu(BuildContext anchor, String current) async {
+  // Capture everything that reads from the context up front, before
+  // any await — these stay valid for the rest of the flow and keep
+  // the analyzer happy about context-across-async-gaps.
+  final l = AppLocalizations.of(anchor)!;
+  final messenger = ScaffoldMessenger.of(anchor);
+  final box = anchor.findRenderObject() as RenderBox?;
+  final overlay = Overlay.of(anchor).context.findRenderObject() as RenderBox?;
+  if (box == null || overlay == null) return;
+
+  ChannelStatusSnapshot snap;
+  try {
+    snap = await HubService.instance.channelStatus();
+  } catch (_) {
+    if (anchor.mounted) ChainSettingsDialog.show(anchor);
+    return;
   }
+  if (!anchor.mounted) return;
+
+  // Anchor the menu to the pill's top edge, opening downward.
+  final origin = box.localToGlobal(Offset.zero, ancestor: overlay);
+  final position = RelativeRect.fromLTRB(
+    origin.dx,
+    origin.dy + box.size.height,
+    overlay.size.width - origin.dx - box.size.width,
+    0,
+  );
+
+  const settingsValue = '__settings__';
+  final selected = await showMenu<String>(
+    context: anchor,
+    position: position,
+    items: [
+      for (final ch in snap.channels)
+        PopupMenuItem<String>(
+          value: ch.name,
+          child: _ChannelMenuItem(channel: ch, active: ch.name == snap.active),
+        ),
+      const PopupMenuDivider(),
+      PopupMenuItem<String>(
+        value: settingsValue,
+        child: Row(
+          children: [
+            Icon(
+              Icons.settings_outlined,
+              size: 16,
+              color: Theme.of(anchor).colorScheme.onSurfaceVariant,
+            ),
+            const SizedBox(width: ChainSpace.sm),
+            Text(l.searchSettingsLabel),
+          ],
+        ),
+      ),
+    ],
+  );
+  if (selected == null || !anchor.mounted) return;
+  if (selected == settingsValue) {
+    ChainSettingsDialog.show(anchor);
+    return;
+  }
+  if (selected == snap.active) return;
+
+  final r = await SystemActions.chainChannelSwitch(selected);
+  if (!anchor.mounted) return;
+  if (!r.ok) {
+    showFaiProcessError(
+      anchor,
+      'channel.switch',
+      r.stdout,
+      r.stderr,
+      title: l.channelSwitchFailed(''),
+    );
+    return;
+  }
+  // Repoint Studio at the freshly-restarted channel daemon. persist:
+  // false keeps launch-time auto-discovery following ~/.chain, so the
+  // CLI pointer remains the single source of truth.
+  final target = snap.channels.firstWhere(
+    (c) => c.name == selected,
+    orElse: () =>
+        ChannelInfo(name: selected, port: 50051, running: true, endpoint: ''),
+  );
+  try {
+    await HubService.instance.reconnect(
+      HubEndpoint(host: '127.0.0.1', port: target.port),
+      persist: false,
+    );
+  } catch (_) {/* health poll will retry */}
+  if (anchor.mounted) {
+    messenger.showSnackBar(
+      SnackBar(content: Text(l.channelSwitchOk(selected))),
+    );
+  }
+}
+
+/// One row in the channel-switch menu: accent icon, name, a
+/// running/stopped dot, and a check on the active channel.
+class _ChannelMenuItem extends StatelessWidget {
+  final ChannelInfo channel;
+  final bool active;
+  const _ChannelMenuItem({required this.channel, required this.active});
 
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    final accent = _accent(theme.colorScheme);
+    final accent = _channelAccent(channel.name, theme.colorScheme);
+    return Row(
+      children: [
+        Icon(_channelIcon(channel.name), size: 15, color: accent),
+        const SizedBox(width: ChainSpace.sm),
+        Text(
+          channel.name,
+          style: ChainTheme.mono(
+            size: 12,
+            weight: FontWeight.w600,
+            color: theme.colorScheme.onSurface,
+          ),
+        ),
+        const SizedBox(width: ChainSpace.sm),
+        Container(
+          width: 7,
+          height: 7,
+          decoration: BoxDecoration(
+            color: channel.running
+                ? ChainColors.success
+                : theme.colorScheme.onSurfaceVariant.withValues(alpha: 0.4),
+            shape: BoxShape.circle,
+          ),
+        ),
+        const Spacer(),
+        if (active)
+          Icon(Icons.check, size: 16, color: theme.colorScheme.primary),
+      ],
+    );
+  }
+}
+
+/// Active-channel indicator + switcher. Click to open the channel
+/// menu and switch directly (writes `~/.chain/current-channel` and
+/// restarts the daemon). Color-coded so production stays
+/// unmistakeable.
+class _ChannelPill extends StatelessWidget {
+  final String channel;
+  const _ChannelPill({required this.channel});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final accent = _channelAccent(channel, theme.colorScheme);
     final l = AppLocalizations.of(context)!;
     return Tooltip(
       message: l.sidebarChannelTooltip,
@@ -980,7 +1134,7 @@ class _ChannelPill extends StatelessWidget {
         borderRadius: BorderRadius.circular(ChainRadius.sm),
         child: InkWell(
           borderRadius: BorderRadius.circular(ChainRadius.sm),
-          onTap: () => ChainSettingsDialog.show(context),
+          onTap: () => _showChannelSwitchMenu(context, channel),
           child: Container(
             padding: const EdgeInsets.symmetric(
               horizontal: ChainSpace.sm,
@@ -993,7 +1147,7 @@ class _ChannelPill extends StatelessWidget {
             child: Row(
               mainAxisSize: MainAxisSize.min,
               children: [
-                Icon(_icon, size: 11, color: accent),
+                Icon(_channelIcon(channel), size: 11, color: accent),
                 const SizedBox(width: 4),
                 Text(
                   channel,
@@ -1003,6 +1157,8 @@ class _ChannelPill extends StatelessWidget {
                     color: accent,
                   ),
                 ),
+                const SizedBox(width: 2),
+                Icon(Icons.arrow_drop_down, size: 12, color: accent),
               ],
             ),
           ),
@@ -1054,21 +1210,6 @@ class _CollapsedChannelChip extends StatelessWidget {
   final String channel;
   const _CollapsedChannelChip({required this.channel});
 
-  Color _accent(ColorScheme cs) {
-    switch (channel) {
-      case 'production':
-        // "Live & healthy", not an error — red here read as a fault.
-        return ChainColors.success;
-      case 'beta':
-        return ChainColors.warning;
-      case 'dev':
-        return cs.primary;
-      case 'local':
-      default:
-        return cs.onSurfaceVariant;
-    }
-  }
-
   String get _letter {
     if (channel.isEmpty) return '·';
     return channel.substring(0, 1).toUpperCase();
@@ -1077,8 +1218,13 @@ class _CollapsedChannelChip extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    final accent = _accent(theme.colorScheme);
-    return Container(
+    final accent = _channelAccent(channel, theme.colorScheme);
+    return MouseRegion(
+      cursor: SystemMouseCursors.click,
+      child: GestureDetector(
+        behavior: HitTestBehavior.opaque,
+        onTap: () => _showChannelSwitchMenu(context, channel),
+        child: Container(
           width: 18,
           height: 18,
           decoration: BoxDecoration(
@@ -1088,7 +1234,13 @@ class _CollapsedChannelChip extends StatelessWidget {
           alignment: Alignment.center,
           child: Text(
             _letter,
-        style: ChainTheme.mono(size: 10, weight: FontWeight.w700, color: accent),
+            style: ChainTheme.mono(
+              size: 10,
+              weight: FontWeight.w700,
+              color: accent,
+            ),
+          ),
+        ),
       ),
     );
   }

lib/pages/approvals.dart

@@ -527,6 +527,9 @@ class _ApprovalCard extends StatelessWidget {
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
+          // Status row: selection + state + expiry. No flow id here —
+          // the headline below leads with WHAT is being asked, not the
+          // technical flow name.
           Row(
             children: [
               Checkbox(
@@ -540,15 +543,7 @@ class _ApprovalCard extends StatelessWidget {
                 tone: ChainPillTone.warning,
                 icon: Icons.pending_outlined,
               ),
-              const SizedBox(width: ChainSpace.sm),
-              Expanded(
-                child: Text(
-                  '${approval.flowName} › ${approval.stepId}',
-                  style: theme.textTheme.titleMedium?.copyWith(
-                    fontWeight: FontWeight.w600,
-                  ),
-                ),
-              ),
+              const Spacer(),
               if (approval.expiresAt != null)
                 ChainPill(
                   label: _expiresInLabel(context, approval.expiresAt!),
@@ -558,7 +553,38 @@ class _ApprovalCard extends StatelessWidget {
             ],
           ),
           const SizedBox(height: ChainSpace.lg),
-          Text(approval.prompt, style: theme.textTheme.bodyLarge),
+          // Headline = the human question the flow author wrote ("what
+          // am I approving"). Falls back to a clear sentence when the
+          // step left the prompt empty, so the card is never reduced to
+          // a cryptic flow id.
+          Text(
+            approval.prompt.trim().isEmpty
+                ? l.approvalsRequestFallback
+                : approval.prompt,
+            style: theme.textTheme.titleMedium?.copyWith(
+              fontWeight: FontWeight.w600,
+            ),
+          ),
+          const SizedBox(height: 4),
+          // Technical context, demoted to a small metadata line.
+          Row(
+            children: [
+              Icon(
+                Icons.account_tree_outlined,
+                size: 13,
+                color: theme.colorScheme.onSurfaceVariant,
+              ),
+              const SizedBox(width: 6),
+              Expanded(
+                child: Text(
+                  l.approvalsFlowStepMeta(approval.flowName, approval.stepId),
+                  style: theme.textTheme.bodySmall?.copyWith(
+                    color: theme.colorScheme.onSurfaceVariant,
+                  ),
+                ),
+              ),
+            ],
+          ),
           if (approval.payloadPreview != null) ...[
             const SizedBox(height: ChainSpace.md),
             Padding(

lib/pages/store.dart

@@ -234,10 +234,15 @@ class _StorePageState extends State<StorePage> {
               onPressed: _openFilterDialog,
             ),
           ),
-          IconButton(
-            icon: const Icon(Icons.storefront_outlined, size: 18),
-            tooltip: 'Module stores',
+          Padding(
+            padding: const EdgeInsets.only(right: ChainSpace.sm),
+            child: OutlinedButton.icon(
+              icon: const Icon(Icons.add_business_outlined, size: 16),
+              label: Text(l.storesManagerButton),
               onPressed: () => ChainStoresDialog.show(context),
+              style:
+                  OutlinedButton.styleFrom(visualDensity: VisualDensity.compact),
+            ),
           ),
           IconButton(
             icon: const Icon(Icons.refresh, size: 18),
@@ -1139,17 +1144,25 @@ class _FilterDialogState extends State<_FilterDialog> {
           ],
         ),
       ),
+      // A single Row is the one action child: AlertDialog wraps
+      // `actions` in an OverflowBar (not a Flex), so a bare
+      // `Spacer()` here throws — it needs a Flex parent. Nesting
+      // the buttons in a Row gives the Spacer a valid Flex
+      // ancestor and keeps Reset left / Cancel+Apply right.
       actions: [
+        Row(
+          children: [
             TextButton(
               onPressed: () {
                 setState(() {
                   _status = '';
                   _source = '';
                   _installedOnly = false;
-              // Reset puts `installableOnly` back to its default
-              // (on) — the operator hits Reset to escape a
-              // custom-filter state and expects the default view
-              // back, not an everything-including-planned view.
+                  // Reset puts `installableOnly` back to its
+                  // default (on) — the operator hits Reset to
+                  // escape a custom-filter state and expects the
+                  // default view back, not an everything-
+                  // including-planned view.
                   _installableOnly = true;
                 });
               },
@@ -1160,6 +1173,7 @@ class _FilterDialogState extends State<_FilterDialog> {
               onPressed: () => Navigator.pop(context, null),
               child: Text(l.buttonCancel),
             ),
+            const SizedBox(width: ChainSpace.sm),
             FilledButton(
               onPressed: () => Navigator.pop(
                 context,
@@ -1173,6 +1187,8 @@ class _FilterDialogState extends State<_FilterDialog> {
               child: Text(l.storeFilterApply),
             ),
           ],
+        ),
+      ],
     );
   }
 }

lib/pages/welcome.dart

@@ -1003,18 +1003,37 @@ class _DocsRow extends StatelessWidget {
                 ],
               );
             }
-            final cardWidth = (constraints.maxWidth - ChainSpace.md) / 2;
-            return Wrap(
-              spacing: ChainSpace.md,
-              runSpacing: ChainSpace.md,
+            // Pair the cards into equal-height rows: IntrinsicHeight
+            // + stretch makes the two cards in a row match height
+            // instead of the Wrap's ragged tops (their blurbs differ
+            // in length, especially across locales). An odd trailing
+            // card spans the full width so it reads as intentional
+            // rather than a lonely half-box with dead space beside it.
+            final rows = <Widget>[];
+            for (var i = 0; i < _kDocs.length; i += 2) {
+              if (rows.isNotEmpty) {
+                rows.add(const SizedBox(height: ChainSpace.md));
+              }
+              final left = _kDocs[i];
+              final right = i + 1 < _kDocs.length ? _kDocs[i + 1] : null;
+              if (right == null) {
+                rows.add(_DocCard(entry: left));
+              } else {
+                rows.add(
+                  IntrinsicHeight(
+                    child: Row(
+                      crossAxisAlignment: CrossAxisAlignment.stretch,
                       children: [
-                for (final d in _kDocs)
-                  SizedBox(
-                    width: cardWidth,
-                    child: _DocCard(entry: d),
-                  ),
+                        Expanded(child: _DocCard(entry: left)),
+                        const SizedBox(width: ChainSpace.md),
+                        Expanded(child: _DocCard(entry: right)),
                       ],
+                    ),
+                  ),
                 );
+              }
+            }
+            return Column(children: rows);
           },
         ),
       ],

lib/widgets/chain_stores_dialog.dart

@@ -3,11 +3,15 @@
 // every store's modules into one searchable index, so adding a store
 // (e.g. a domain app's published modules) makes them appear in the Store.
 
+import 'dart:async';
+import 'dart:io';
+
 import 'package:chain_client_sdk/chain_client_sdk.dart';
 import 'package:flutter/material.dart';
 
 import '../data/error_presentation.dart';
 import '../data/hub.dart';
+import '../l10n/app_localizations.dart';
 import '../theme/tokens.dart';
 
 class ChainStoresDialog extends StatefulWidget {
@@ -28,10 +32,46 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
   final _url = TextEditingController();
   bool _busy = false;
 
+  /// Reachability of each suggested store's index URL. `null` while the
+  /// probe is in flight, `true` once a response arrives that the hub
+  /// could parse (fail-open: network errors also count as `true`, so a
+  /// transient hiccup never hides a real store), `false` only on a
+  /// definitive 4xx/5xx — i.e. "the provider hasn't published it yet".
+  final Map<String, bool?> _reachable = {};
+
   @override
   void initState() {
     super.initState();
     _reload();
+    for (final s in _kSuggestedStores) {
+      _reachable[s.url] = null;
+      _probe(s.url);
+    }
+  }
+
+  /// One-shot HEAD-ish probe of a suggested store's index. Fails open:
+  /// only a clean 4xx/5xx marks it unavailable; connection errors and
+  /// timeouts leave it available so the hub stays the real authority.
+  Future<void> _probe(String url) async {
+    if (!url.startsWith('http')) {
+      if (mounted) setState(() => _reachable[url] = true);
+      return;
+    }
+    bool available = true;
+    try {
+      final client = HttpClient()
+        ..connectionTimeout = const Duration(seconds: 4);
+      final req = await client.getUrl(Uri.parse(url));
+      final resp = await req.close().timeout(const Duration(seconds: 5));
+      available = resp.statusCode >= 200 && resp.statusCode < 400;
+      await resp.drain<void>();
+      client.close(force: true);
+    } catch (_) {
+      // Offline / DNS / timeout — fail open. The add path will surface
+      // any real error if the operator clicks through.
+      available = true;
+    }
+    if (mounted) setState(() => _reachable[url] = available);
   }
 
   void _reload() =>
@@ -44,23 +84,29 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
     super.dispose();
   }
 
-  Future<void> _add() async {
-    final name = _name.text.trim();
-    final url = _url.text.trim();
+  Future<void> _add() =>
+      _addStore(_name.text.trim(), _url.text.trim(), fromFields: true);
+
+  /// Shared add path — used by both the manual name/URL form and the
+  /// one-click suggested-store buttons.
+  Future<void> _addStore(String name, String url,
+      {bool fromFields = false}) async {
     if (name.isEmpty || url.isEmpty) return;
     setState(() => _busy = true);
     try {
       final r = await HubService.instance.addStore(name: name, url: url);
       if (!mounted) return;
+      if (fromFields) {
         _name.clear();
         _url.clear();
+      }
       ScaffoldMessenger.of(context)
           .showSnackBar(SnackBar(content: Text(r.message)));
       _reload();
     } catch (e) {
       if (mounted) {
         showFaiErrorSnack(context, 'store.add', e,
-            title: 'Could not add store');
+            title: AppLocalizations.of(context)!.storesManagerAddFailed);
       }
     } finally {
       if (mounted) setState(() => _busy = false);
@@ -77,7 +123,7 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
     } catch (e) {
       if (mounted) {
         showFaiErrorSnack(context, 'store.remove', e,
-            title: 'Could not remove store');
+            title: AppLocalizations.of(context)!.storesManagerRemoveFailed);
       }
     }
   }
@@ -85,8 +131,9 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
+    final l = AppLocalizations.of(context)!;
     return AlertDialog(
-      title: const Text('Module stores'),
+      title: Text(l.storesManagerTitle),
       content: SizedBox(
         width: 540,
         child: Column(
@@ -94,8 +141,7 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
           crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
             Text(
-              'The hub merges modules from every store below into one index. '
-              'Add a store index URL to make its modules installable here.',
+              l.storesManagerIntro,
               style: theme.textTheme.bodySmall
                   ?.copyWith(color: theme.colorScheme.onSurfaceVariant),
             ),
@@ -126,14 +172,14 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
                           title: Text(s.name),
                           subtitle: Text(
                             s.url.isEmpty
-                                ? '${s.moduleCount} modules · bundled'
-                                : '${s.url}\n${s.moduleCount} modules',
+                                ? l.storesManagerBundled(s.moduleCount)
+                                : '${s.url}\n${l.storesManagerModuleCount(s.moduleCount)}',
                           ),
                           isThreeLine: s.url.isNotEmpty,
                           trailing: s.removable
                               ? IconButton(
                                   icon: const Icon(Icons.delete_outline),
-                                  tooltip: 'Remove',
+                                  tooltip: l.buttonRemove,
                                   onPressed: () => _remove(s.name),
                                 )
                               : const Icon(Icons.lock_outline, size: 16),
@@ -144,7 +190,37 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
               ),
             ),
             const Divider(),
-            Text('Add a store', style: theme.textTheme.titleSmall),
+            // One-click curated stores — add or remove a known store
+            // (e.g. a domain app's published modules) without typing a
+            // URL. State follows the configured list above.
+            Text(l.storesManagerSuggested, style: theme.textTheme.titleSmall),
+            const SizedBox(height: ChainSpace.sm),
+            FutureBuilder<List<StoreSource>>(
+              future: _future,
+              builder: (c, snap) {
+                final stores = snap.data ?? const <StoreSource>[];
+                final configuredNameByUrl = <String, String>{
+                  for (final s in stores)
+                    if (s.url.isNotEmpty) s.url: s.name,
+                };
+                return Column(
+                  children: [
+                    for (final sg in _kSuggestedStores)
+                      _SuggestedStoreRow(
+                        store: sg,
+                        configuredName: configuredNameByUrl[sg.url],
+                        available: _reachable[sg.url],
+                        busy: _busy,
+                        onAdd: () => _addStore(sg.name, sg.url),
+                        onRemove: (name) => _remove(name),
+                      ),
+                  ],
+                );
+              },
+            ),
+            const SizedBox(height: ChainSpace.md),
+            const Divider(),
+            Text(l.storesManagerAddSection, style: theme.textTheme.titleSmall),
             const SizedBox(height: ChainSpace.sm),
             Row(
               children: [
@@ -152,8 +228,8 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
                   flex: 2,
                   child: TextField(
                     controller: _name,
-                    decoration: const InputDecoration(
-                      labelText: 'Name',
+                    decoration: InputDecoration(
+                      labelText: l.storesManagerNameLabel,
                       isDense: true,
                     ),
                   ),
@@ -163,8 +239,8 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
                   flex: 4,
                   child: TextField(
                     controller: _url,
-                    decoration: const InputDecoration(
-                      labelText: 'Index URL (https:// or file://)',
+                    decoration: InputDecoration(
+                      labelText: l.storesManagerUrlLabel,
                       isDense: true,
                     ),
                     onSubmitted: (_) => _add(),
@@ -178,7 +254,7 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
       actions: [
         TextButton(
           onPressed: () => Navigator.of(context).pop(),
-          child: const Text('Close'),
+          child: Text(l.buttonClose),
         ),
         FilledButton(
           onPressed: _busy ? null : _add,
@@ -188,9 +264,150 @@ class _ChainStoresDialogState extends State<ChainStoresDialog> {
                   height: 16,
                   child: CircularProgressIndicator(strokeWidth: 2),
                 )
-              : const Text('Add store'),
+              : Text(l.storesManagerAddAction),
         ),
       ],
     );
   }
 }
+
+/// A curated, one-click store the operator can add or remove without
+/// typing a URL. The hub validates the index on add, so the entry
+/// only succeeds once its index is actually published at [url].
+class _SuggestedStore {
+  final String name;
+  final String url;
+  final String Function(AppLocalizations) describe;
+  const _SuggestedStore({
+    required this.name,
+    required this.url,
+    required this.describe,
+  });
+}
+
+/// Known stores offered as quick-adds. Keep this short and curated —
+/// it is the in-product shelf of trusted domain stores. The URL is the
+/// canonical publish location each store owner commits to (see the
+/// cross-agent handoff log for Recl∆Im's).
+final List<_SuggestedStore> _kSuggestedStores = <_SuggestedStore>[
+  _SuggestedStore(
+    name: 'Recl∆Im',
+    url: 'https://releases.chain.flemming.ai/reclaim/store.yaml',
+    describe: (l) => l.storesSuggestedReclaimDesc,
+  ),
+];
+
+/// One row in the suggested-stores shelf: icon, name, description, and
+/// a single Add/Remove button that flips based on whether the store is
+/// already configured.
+class _SuggestedStoreRow extends StatelessWidget {
+  final _SuggestedStore store;
+
+  /// The configured store's name when this suggestion is already
+  /// added (matched by URL), else null.
+  final String? configuredName;
+
+  /// Index reachability: null = still probing, true = reachable,
+  /// false = a definitive 4xx/5xx (not published yet).
+  final bool? available;
+  final bool busy;
+  final VoidCallback onAdd;
+  final ValueChanged<String> onRemove;
+
+  const _SuggestedStoreRow({
+    required this.store,
+    required this.configuredName,
+    required this.available,
+    required this.busy,
+    required this.onAdd,
+    required this.onRemove,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final l = AppLocalizations.of(context)!;
+    final added = configuredName != null;
+    // Not-yet-published: a definitive bad response and not already
+    // configured. Show a muted "not available yet" chip instead of an
+    // Add button that would only fail on click.
+    final notPublished = !added && available == false;
+    final probing = !added && available == null;
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 2),
+      child: Row(
+        children: [
+          Icon(
+            Icons.storefront_outlined,
+            size: 18,
+            color: theme.colorScheme.primary,
+          ),
+          const SizedBox(width: ChainSpace.sm),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  store.name,
+                  style: theme.textTheme.bodyMedium
+                      ?.copyWith(fontWeight: FontWeight.w600),
+                ),
+                Text(
+                  store.describe(l),
+                  style: theme.textTheme.bodySmall
+                      ?.copyWith(color: theme.colorScheme.onSurfaceVariant),
+                ),
+              ],
+            ),
+          ),
+          const SizedBox(width: ChainSpace.sm),
+          if (added)
+            OutlinedButton.icon(
+              icon: const Icon(Icons.check, size: 14),
+              label: Text(l.buttonRemove),
+              onPressed: busy ? null : () => onRemove(configuredName!),
+              style: OutlinedButton.styleFrom(
+                visualDensity: VisualDensity.compact,
+                foregroundColor: ChainColors.success,
+              ),
+            )
+          else if (probing)
+            const SizedBox(
+              width: 16,
+              height: 16,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            )
+          else if (notPublished)
+            Tooltip(
+              message: l.storesManagerNotAvailableHint,
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Icon(
+                    Icons.schedule_outlined,
+                    size: 14,
+                    color: theme.colorScheme.onSurfaceVariant,
+                  ),
+                  const SizedBox(width: 4),
+                  Text(
+                    l.storesManagerNotAvailable,
+                    style: theme.textTheme.bodySmall
+                        ?.copyWith(color: theme.colorScheme.onSurfaceVariant),
+                  ),
+                ],
+              ),
+            )
+          else
+            FilledButton.tonalIcon(
+              icon: const Icon(Icons.add, size: 14),
+              label: Text(l.storesManagerAddShort),
+              onPressed: busy ? null : onAdd,
+              style: FilledButton.styleFrom(
+                visualDensity: VisualDensity.compact,
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}