feat(doctor,shell): ollama host-service suggestion + hub-update hint (0.80.0)

Doctor: when the system AI uses an Ollama endpoint that no declared
host service covers (host:port match, /v1 suffix stripped), the
services panel says so in one sentence with a one-click 'declare as
host service' via the new DeclareService RPC — and states honestly
that it takes effect after a daemon restart (the restart button sits
on the same page). Pure suggestOllamaServiceEndpoint pins every
branch.

Shell: one slim, dismissible banner after connecting when the
release manifest offers a newer hub version; dismissal is persisted
per version so each release hints exactly once (pure
shouldShowUpdateHint + a widget test through the fake hub).
Deliberately manifest-based — Studio and hub versions are
independent counters, so a direct comparison would be wrong;
unreleased dev skew stays with the per-page classified states.
The probe stays inert under the test probe override: its timeout
timer leaked into hub_banner_test (the hermeticity class again).

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

CHANGELOG.md

@@ -6,6 +6,23 @@ lockstep.
 
 ## Unreleased
 
+### Added (0.80.0)
+
+- **Ollama joins the host services.** Ollama-backed store entries
+  now declare `requires_services: [ollama]` hub-side, and the
+  doctor's services panel notices when the system AI uses an Ollama
+  endpoint that is not declared as a host service: one plain
+  sentence plus a one-click "declare as host service" (via the new
+  DeclareService RPC; states honestly that a daemon restart is
+  required).
+- **The shell says when a hub update exists.** One slim, dismissible
+  banner after connecting when the release manifest offers a newer
+  hub version — dismissal is remembered per version, the doctor
+  page keeps the apply button. (Deliberately manifest-based:
+  Studio and hub version numbers are independent counters, so a
+  direct comparison would be wrong; unreleased dev skew stays with
+  the per-page "needs a newer hub" states.)
+
 ### Added (0.79.0)
 
 - **Maintainers in the store.** The detail sheet always answers "who

lib/data/about_info.dart

@@ -4,7 +4,7 @@
 
 /// Studio's own build version. Bump on every UI release so the
 /// running app self-identifies.
-const String kStudioVersion = '0.79.0';
+const String kStudioVersion = '0.80.0';
 
 const String kProductName = 'Ch∆In Studio';
 const String kVendorName = 'Flemming.AI (F∆I)';

lib/data/hub.dart

@@ -1221,6 +1221,42 @@ class HubService {
   }
 
   /// Composite "doctor" snapshot. One round-trip per piece, run
+  /// Declare a host service in the operator config. Returns true
+  /// when a daemon restart is required for it to take effect
+  /// (always, today — services are read at start).
+  Future<bool> declareService({
+    required String name,
+    required String endpoint,
+    String healthPath = '',
+    List<String> tags = const [],
+  }) => _client.declareService(
+    name: name,
+    endpoint: endpoint,
+    healthPath: healthPath,
+    tags: tags,
+  );
+
+  /// Lightweight update probe for the shell's one-time hint:
+  /// null when the manifest is unreachable / no update / any
+  /// error — the hint simply stays away then.
+  Future<UpdateStatus?> checkHubUpdate() async {
+    try {
+      final r = await _client.checkUpdate().timeout(
+        const Duration(seconds: 3),
+      );
+      if (!r.updateAvailable) return null;
+      return UpdateStatus(
+        channel: r.channel,
+        localVersion: r.localVersion,
+        latestVersion: r.latestVersion,
+        updateAvailable: r.updateAvailable,
+        manifestReachable: r.manifestReachable,
+      );
+    } catch (_) {
+      return null;
+    }
+  }
+
   /// Version string of the RUNNING hub (from CheckUpdate's
   /// local_version — a local RPC field; the manifest fetch result
   /// is ignored). Empty when the hub is unreachable. Used by

lib/l10n/app_de.arb

@@ -1191,6 +1191,14 @@
     }
   },
   "doctorSummaryDeclared": "deklariert",
+  "doctorOllamaSuggest": "Die System-KI nutzt Ollama auf {endpoint} — als Host-Dienst deklarieren, damit Module und Diagnose ihn kennen?",
+  "@doctorOllamaSuggest": {"placeholders": {"endpoint": {"type": "String"}}},
+  "doctorOllamaDeclareButton": "Als Host-Dienst deklarieren",
+  "doctorOllamaDeclared": "Als Host-Dienst „ollama“ deklariert — wirksam nach einem Daemon-Neustart (Knopf unten auf dieser Seite).",
+  "updateHintBanner": "Für den Hub ({local}) ist Version {latest} verfügbar.",
+  "@updateHintBanner": {"placeholders": {"local": {"type": "String"}, "latest": {"type": "String"}}},
+  "updateHintOpenDoctor": "Diagnose öffnen",
+  "updateHintDismiss": "Später",
   "svcExposureLoopback": "nur lokal",
   "svcExposurePrivate": "privates Netz",
   "svcExposurePublic": "öffentlich erreichbar",

lib/l10n/app_en.arb

@@ -1215,6 +1215,14 @@
     }
   },
   "doctorSummaryDeclared": "declared",
+  "doctorOllamaSuggest": "The system AI uses Ollama at {endpoint} — declare it as a host service so modules and the doctor know it?",
+  "@doctorOllamaSuggest": {"placeholders": {"endpoint": {"type": "String"}}},
+  "doctorOllamaDeclareButton": "Declare as host service",
+  "doctorOllamaDeclared": "Declared as host service \"ollama\" — takes effect after a daemon restart (button further down this page).",
+  "updateHintBanner": "Version {latest} is available for the hub ({local}).",
+  "@updateHintBanner": {"placeholders": {"local": {"type": "String"}, "latest": {"type": "String"}}},
+  "updateHintOpenDoctor": "Open Doctor",
+  "updateHintDismiss": "Later",
   "svcExposureLoopback": "local only",
   "svcExposurePrivate": "private network",
   "svcExposurePublic": "publicly reachable",

lib/l10n/app_localizations.dart

@@ -3704,6 +3704,42 @@ abstract class AppLocalizations {
   /// **'declared'**
   String get doctorSummaryDeclared;
 
+  /// No description provided for @doctorOllamaSuggest.
+  ///
+  /// In en, this message translates to:
+  /// **'The system AI uses Ollama at {endpoint} — declare it as a host service so modules and the doctor know it?'**
+  String doctorOllamaSuggest(String endpoint);
+
+  /// No description provided for @doctorOllamaDeclareButton.
+  ///
+  /// In en, this message translates to:
+  /// **'Declare as host service'**
+  String get doctorOllamaDeclareButton;
+
+  /// No description provided for @doctorOllamaDeclared.
+  ///
+  /// In en, this message translates to:
+  /// **'Declared as host service \"ollama\" — takes effect after a daemon restart (button further down this page).'**
+  String get doctorOllamaDeclared;
+
+  /// No description provided for @updateHintBanner.
+  ///
+  /// In en, this message translates to:
+  /// **'Version {latest} is available for the hub ({local}).'**
+  String updateHintBanner(String local, String latest);
+
+  /// No description provided for @updateHintOpenDoctor.
+  ///
+  /// In en, this message translates to:
+  /// **'Open Doctor'**
+  String get updateHintOpenDoctor;
+
+  /// No description provided for @updateHintDismiss.
+  ///
+  /// In en, this message translates to:
+  /// **'Later'**
+  String get updateHintDismiss;
+
   /// No description provided for @svcExposureLoopback.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_de.dart

@@ -2157,6 +2157,29 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get doctorSummaryDeclared => 'deklariert';
 
+  @override
+  String doctorOllamaSuggest(String endpoint) {
+    return 'Die System-KI nutzt Ollama auf $endpoint — als Host-Dienst deklarieren, damit Module und Diagnose ihn kennen?';
+  }
+
+  @override
+  String get doctorOllamaDeclareButton => 'Als Host-Dienst deklarieren';
+
+  @override
+  String get doctorOllamaDeclared =>
+      'Als Host-Dienst „ollama“ deklariert — wirksam nach einem Daemon-Neustart (Knopf unten auf dieser Seite).';
+
+  @override
+  String updateHintBanner(String local, String latest) {
+    return 'Für den Hub ($local) ist Version $latest verfügbar.';
+  }
+
+  @override
+  String get updateHintOpenDoctor => 'Diagnose öffnen';
+
+  @override
+  String get updateHintDismiss => 'Später';
+
   @override
   String get svcExposureLoopback => 'nur lokal';
 

lib/l10n/app_localizations_en.dart

@@ -2160,6 +2160,29 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get doctorSummaryDeclared => 'declared';
 
+  @override
+  String doctorOllamaSuggest(String endpoint) {
+    return 'The system AI uses Ollama at $endpoint — declare it as a host service so modules and the doctor know it?';
+  }
+
+  @override
+  String get doctorOllamaDeclareButton => 'Declare as host service';
+
+  @override
+  String get doctorOllamaDeclared =>
+      'Declared as host service \"ollama\" — takes effect after a daemon restart (button further down this page).';
+
+  @override
+  String updateHintBanner(String local, String latest) {
+    return 'Version $latest is available for the hub ($local).';
+  }
+
+  @override
+  String get updateHintOpenDoctor => 'Open Doctor';
+
+  @override
+  String get updateHintDismiss => 'Later';
+
   @override
   String get svcExposureLoopback => 'local only';
 

lib/main.dart

@@ -4,6 +4,7 @@
 // Tokens in lib/theme/, primitives in lib/widgets/.
 
 import 'dart:async';
+import 'package:shared_preferences/shared_preferences.dart';
 
 import 'package:chain_client_sdk/chain_client_sdk.dart';
 import 'package:flutter/foundation.dart' show defaultTargetPlatform;
@@ -285,8 +286,7 @@ class StudioAppState extends State<StudioApp> {
                             startSidebarExpanded: widget.startSidebarExpanded,
                           )
                         : SetupGateScreen(
-                            onDone: () =>
-                                setState(() => _setupGateDone = true),
+                            onDone: () => setState(() => _setupGateDone = true),
                           ),
                   );
                 },
@@ -375,9 +375,9 @@ class StudioShellState extends State<StudioShell> {
     final override = debugReloadTokenOverride;
     if (override != null) return override();
     if (debugProbeOverride != null) return Future.value(false);
-    return HubService.instance
-        .reloadAuthTokenIfChanged()
-        .catchError((_) => false);
+    return HubService.instance.reloadAuthTokenIfChanged().catchError(
+      (_) => false,
+    );
   }
 
   /// Current connection state, for descendants (e.g. WelcomePage)
@@ -392,9 +392,9 @@ class StudioShellState extends State<StudioShell> {
     final r = await SystemActions.chainDaemon(['start']);
     if (!mounted) return;
     if (r.ok) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(l.daemonStartRequested)),
-      );
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(l.daemonStartRequested)));
       Future.delayed(const Duration(seconds: 1), _checkHealth);
       return;
     }
@@ -515,6 +515,43 @@ class StudioShellState extends State<StudioShell> {
     );
   }
 
+  /// One-time hub-update hint (zero-learning-curve: the shell says
+  /// actively that a newer hub release exists instead of hiding it
+  /// on the doctor page). Null = nothing to show. Dismissal is
+  /// persisted per latest-version, so each release hints once.
+  UpdateStatus? _updateHint;
+  bool _updateProbed = false;
+
+  Future<void> _probeUpdateOnce() async {
+    if (_updateProbed) return;
+    _updateProbed = true;
+    // Inert under a test probe override (same rule as
+    // _reloadTokenIfChanged): those suites drive the shell against
+    // the REAL HubService, and the update probe's timeout timer
+    // would leak past the test body. Banner tests inject the fake
+    // hub instead, which answers without timers.
+    if (debugProbeOverride != null) return;
+    final st = await HubService.instance.checkHubUpdate();
+    if (!mounted || st == null) return;
+    final prefs = await SharedPreferences.getInstance();
+    final dismissed = prefs.getString('update.hint.dismissed');
+    if (!mounted) return;
+    if (shouldShowUpdateHint(
+      latestVersion: st.latestVersion,
+      dismissedVersion: dismissed,
+    )) {
+      setState(() => _updateHint = st);
+    }
+  }
+
+  Future<void> _dismissUpdateHint() async {
+    final latest = _updateHint?.latestVersion;
+    setState(() => _updateHint = null);
+    if (latest == null) return;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString('update.hint.dismissed', latest);
+  }
+
   Future<void> _checkHealth({bool retriedAfterTokenReload = false}) async {
     final probe = debugProbeOverride != null
         ? await debugProbeOverride!()
@@ -528,6 +565,10 @@ class StudioShellState extends State<StudioShell> {
     final endpointChanged = endpoint != _polledEndpoint;
     _polledEndpoint = endpoint;
     final ok = probe == HubProbeResult.serving;
+    if (ok) {
+      // Fire-and-forget; guarded by _updateProbed.
+      unawaited(_probeUpdateOnce());
+    }
     final authRejected = probe == HubProbeResult.authRejected;
     final wasUnreachable = _hubUnreachable;
     final nextFailed = ok ? 0 : (endpointChanged ? 1 : _failedPolls + 1);
@@ -561,7 +602,9 @@ class StudioShellState extends State<StudioShell> {
         if (_activeChannel != snap.active) {
           setState(() => _activeChannel = snap.active);
         }
-      } catch (_) {/* best-effort */}
+      } catch (_) {
+        /* best-effort */
+      }
       try {
         // The badge counts the active workspace's pending approvals
         // (empty slug = all projects), matching the Approvals page.
@@ -572,7 +615,9 @@ class StudioShellState extends State<StudioShell> {
         if (_pendingApprovals != pending.length) {
           setState(() => _pendingApprovals = pending.length);
         }
-      } catch (_) {/* best-effort */}
+      } catch (_) {
+        /* best-effort */
+      }
     }
   }
 
@@ -696,11 +741,21 @@ class StudioShellState extends State<StudioShell> {
                   child: Column(
                     children: [
                       const ChainSealedIdentityBar(),
+                      if (_updateHint != null)
+                        _UpdateHintBanner(
+                          status: _updateHint!,
+                          onOpenDoctor: () {
+                            navigateTo('doctor');
+                            unawaited(_dismissUpdateHint());
+                          },
+                          onDismiss: _dismissUpdateHint,
+                        ),
                       if (_hubUnreachable)
                         _HubUnreachableBanner(
                           endpoint: HubService.instance.endpointLabel,
                           authRejected: _authRejected,
-                          onOpenSettings: () => ChainSettingsDialog.show(context),
+                          onOpenSettings: () =>
+                              ChainSettingsDialog.show(context),
                         ),
                       Expanded(
                         child: AnimatedSwitcher(
@@ -916,9 +971,9 @@ class _SidebarState extends State<_Sidebar>
     final r = await SystemActions.chainDaemon(['start']);
     if (!context.mounted) return;
     if (r.ok) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(l.daemonStartRequested)),
-      );
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(l.daemonStartRequested)));
       return;
     }
     // The daemon may already be running (port in use) — probe before
@@ -1064,14 +1119,17 @@ class _SidebarState extends State<_Sidebar>
                             t: t,
                             labelsInteractive: labelsInteractive,
                             iconColumnWidth: _collapsedWidth,
-                            badge: widget.pages[i].id == 'approvals' &&
+                            badge:
+                                widget.pages[i].id == 'approvals' &&
                                     widget.pendingApprovals > 0
                                 ? widget.pendingApprovals
                                 : null,
                             // Cmd+1..9 jump to the destination; the
                             // hint rides in tooltip + expanded label
                             // so the shortcut is discoverable.
-                            shortcutHint: i < 9 ? _metaShortcut('${i + 1}') : null,
+                            shortcutHint: i < 9
+                                ? _metaShortcut('${i + 1}')
+                                : null,
                             onTap: () => widget.onSelect(i),
                           ),
                       ],
@@ -1308,7 +1366,9 @@ Future<void> _showChannelSwitchMenu(BuildContext anchor, String current) async {
       HubEndpoint(host: '127.0.0.1', port: target.port),
       persist: false,
     );
-  } catch (_) {/* health poll will retry */}
+  } catch (_) {
+    /* health poll will retry */
+  }
   if (anchor.mounted) {
     messenger.showSnackBar(
       SnackBar(content: Text(l.channelSwitchOk(selected))),
@@ -1549,7 +1609,9 @@ class _ConnectionLabel extends StatelessWidget {
     // which reports the *active* channel's daemon.
     final ch = HubService.instance.connectedChannelName;
     final caption = connected == true
-        ? (ch != null ? '${l.connectionConnected} · $ch' : l.connectionConnected)
+        ? (ch != null
+              ? '${l.connectionConnected} · $ch'
+              : l.connectionConnected)
         : connected == false
         ? l.connectionTapToStart
         : l.connectionConnecting;
@@ -1653,10 +1715,7 @@ class _SidebarItemState extends State<_SidebarItem> {
             right: -6,
             top: -4,
             child: Container(
-              padding: const EdgeInsets.symmetric(
-                horizontal: 5,
-                vertical: 1,
-              ),
+              padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 1),
               constraints: const BoxConstraints(minWidth: 16, minHeight: 14),
               decoration: BoxDecoration(
                 color: theme.colorScheme.primary,
@@ -2187,3 +2246,66 @@ class _LanguageToggle extends StatelessWidget {
 // the editor directly with the full runDriver bridge. There
 // is one Flows destination; the standalone editor route is
 // gone.
+
+/// Whether the one-time update hint should show for [latestVersion]
+/// given the persisted [dismissedVersion]. Pure so the unit test
+/// drives it: each release hints exactly once.
+bool shouldShowUpdateHint({
+  required String latestVersion,
+  required String? dismissedVersion,
+}) {
+  if (latestVersion.isEmpty) return false;
+  return latestVersion != dismissedVersion;
+}
+
+/// Slim, dismissible banner: a newer hub release exists. Neutral
+/// tone (informational, not an error); the doctor page holds the
+/// apply button.
+class _UpdateHintBanner extends StatelessWidget {
+  final UpdateStatus status;
+  final VoidCallback onOpenDoctor;
+  final VoidCallback onDismiss;
+
+  const _UpdateHintBanner({
+    required this.status,
+    required this.onOpenDoctor,
+    required this.onDismiss,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final l = AppLocalizations.of(context)!;
+    return Material(
+      color: theme.colorScheme.surfaceContainerHigh,
+      child: Padding(
+        padding: const EdgeInsets.symmetric(
+          horizontal: ChainSpace.lg,
+          vertical: ChainSpace.xs,
+        ),
+        child: Row(
+          children: [
+            Icon(
+              Icons.system_update_alt_outlined,
+              size: 16,
+              color: theme.colorScheme.primary,
+            ),
+            const SizedBox(width: ChainSpace.sm),
+            Expanded(
+              child: Text(
+                l.updateHintBanner(status.localVersion, status.latestVersion),
+                style: theme.textTheme.bodySmall,
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+            TextButton(
+              onPressed: onOpenDoctor,
+              child: Text(l.updateHintOpenDoctor),
+            ),
+            TextButton(onPressed: onDismiss, child: Text(l.updateHintDismiss)),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/pages/doctor.dart

@@ -392,8 +392,11 @@ class _EventLogPanel extends StatelessWidget {
           child: InkWell(
             onTap: onOpenAudit,
             borderRadius: BorderRadius.circular(ChainRadius.sm),
-            child: Semantics(button: true, label: l.doctorLinkAudit,
-                child: headline),
+            child: Semantics(
+              button: true,
+              label: l.doctorLinkAudit,
+              child: headline,
+            ),
           ),
         ),
       );
@@ -539,7 +542,8 @@ class _PathRow extends StatelessWidget {
     // Text config files get an in-Studio viewer too (read top-down,
     // no log colouring) so the operator can read config.yaml
     // without leaving Studio or hunting for an external editor.
-    final isConfig = !isDirectory &&
+    final isConfig =
+        !isDirectory &&
         (lower.endsWith('.yaml') ||
             lower.endsWith('.yml') ||
             lower.endsWith('.toml'));
@@ -575,9 +579,9 @@ class _PathRow extends StatelessWidget {
             onPressed: () async {
               await Clipboard.setData(ClipboardData(text: path));
               if (!context.mounted) return;
-              ScaffoldMessenger.of(context).showSnackBar(
-                SnackBar(content: Text(l.aboutCopiedToast)),
-              );
+              ScaffoldMessenger.of(
+                context,
+              ).showSnackBar(SnackBar(content: Text(l.aboutCopiedToast)));
             },
           ),
           const SizedBox(width: ChainSpace.xs),
@@ -917,9 +921,7 @@ String _sourceKindLabel(String kind) {
     case 'system':
       return 'System';
     default:
-      return kind.isEmpty
-          ? kind
-          : kind[0].toUpperCase() + kind.substring(1);
+      return kind.isEmpty ? kind : kind[0].toUpperCase() + kind.substring(1);
   }
 }
 
@@ -1065,20 +1067,106 @@ class DoctorModulesPanel extends StatelessWidget {
   }
 }
 
-class _ServicesPanel extends StatelessWidget {
+class _ServicesPanel extends StatefulWidget {
   final DoctorSnapshot snapshot;
 
   const _ServicesPanel({required this.snapshot});
 
+  @override
+  State<_ServicesPanel> createState() => _ServicesPanelState();
+}
+
+class _ServicesPanelState extends State<_ServicesPanel> {
+  DoctorSnapshot get snapshot => widget.snapshot;
+
+  /// Best-effort system-AI probe for the Ollama suggestion; null
+  /// (no suggestion) on any failure.
+  SystemAiStatus? _ai;
+
+  /// True once the operator declared the suggested service this
+  /// session — the hub's services() stays the boot snapshot, so
+  /// the row flips to the honest "takes effect after restart"
+  /// note instead of re-suggesting.
+  bool _declared = false;
+  bool _declaring = false;
+
+  @override
+  void initState() {
+    super.initState();
+    HubService.instance
+        .systemAiStatus()
+        .then((st) {
+          if (mounted) setState(() => _ai = st);
+        })
+        .catchError((_) {});
+  }
+
+  Future<void> _declare(String endpoint) async {
+    final l = AppLocalizations.of(context)!;
+    setState(() => _declaring = true);
+    try {
+      await HubService.instance.declareService(
+        name: 'ollama',
+        endpoint: endpoint,
+        healthPath: '/',
+        tags: const ['llm'],
+      );
+      if (!mounted) return;
+      setState(() {
+        _declared = true;
+        _declaring = false;
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(l.doctorOllamaDeclared)));
+    } catch (e) {
+      if (!mounted) return;
+      setState(() => _declaring = false);
+      showChainErrorSnack(context, 'doctor.declare-service', e);
+    }
+  }
+
+  /// The suggestion strip, or null when there is nothing to say.
+  Widget? _suggestionRow(AppLocalizations l) {
+    final ai = _ai;
+    if (ai == null || _declared) {
+      return _declared
+          ? ChainInlineHelp(
+              icon: Icons.check_circle_outline,
+              text: l.doctorOllamaDeclared,
+            )
+          : null;
+    }
+    final endpoint = suggestOllamaServiceEndpoint(
+      ai: ai,
+      services: snapshot.services,
+    );
+    if (endpoint == null) return null;
+    return ChainInlineHelp(
+      icon: Icons.dns_outlined,
+      text: l.doctorOllamaSuggest(endpoint),
+      onLearnMore: _declaring ? null : () => _declare(endpoint),
+      learnMoreLabel: l.doctorOllamaDeclareButton,
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     final l = AppLocalizations.of(context)!;
+    final suggestion = _suggestionRow(l);
     if (snapshot.services.isEmpty) {
       // Wrap on narrow windows so the mono-spaced hint
       // (`add to ~/.chain/config.yaml under services:`) does not
       // overflow horizontally past the card's right edge.
-      return ChainCard(
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          if (suggestion != null) ...[
+            suggestion,
+            const SizedBox(height: ChainSpace.sm),
+          ],
+          ChainCard(
             child: Wrap(
               spacing: ChainSpace.sm,
               runSpacing: ChainSpace.xs,
@@ -1125,9 +1213,18 @@ class _ServicesPanel extends StatelessWidget {
                   ),
               ],
             ),
+          ),
+        ],
       );
     }
-    return ChainCard(
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        if (suggestion != null) ...[
+          suggestion,
+          const SizedBox(height: ChainSpace.sm),
+        ],
+        ChainCard(
           padding: EdgeInsets.zero,
           child: Column(
             children: [
@@ -1172,10 +1269,44 @@ class _ServicesPanel extends StatelessWidget {
               ],
             ],
           ),
+        ),
+      ],
     );
   }
 }
 
+/// The system AI's Ollama endpoint as a host-service suggestion,
+/// or null when there is nothing to suggest: AI disabled, another
+/// provider, or a declared service already covers the same
+/// host:port. Returns the base URL (the /v1 suffix the OpenAI-
+/// compatible config carries is stripped — the service entry
+/// describes the server, not one API flavour). Top-level so the
+/// unit test drives every branch.
+String? suggestOllamaServiceEndpoint({
+  required SystemAiStatus ai,
+  required List<ServiceEntry> services,
+}) {
+  if (!ai.enabled || ai.provider != 'ollama' || ai.endpoint.trim().isEmpty) {
+    return null;
+  }
+  var base = ai.endpoint.trim();
+  for (final suffix in ['/v1/', '/v1']) {
+    if (base.endsWith(suffix)) {
+      base = base.substring(0, base.length - suffix.length);
+      break;
+    }
+  }
+  final target = Uri.tryParse(base);
+  if (target == null || target.host.isEmpty) return null;
+  for (final s in services) {
+    final u = Uri.tryParse(s.endpoint);
+    if (u != null && u.host == target.host && u.port == target.port) {
+      return null;
+    }
+  }
+  return base;
+}
+
 /// Network-reach pill per declared service, from the hub's
 /// endpoint classification (`DeclaredService.exposure`). Public
 /// endpoints get the warning tone — a host service reachable from
@@ -1296,20 +1427,21 @@ class _UpdateBannerState extends State<_UpdateBanner> {
                         child: Material(
                           color: Colors.transparent,
                           child: InkWell(
-                            onTap: () => SystemActions.openInOs(
-                              status.releaseNotesUrl!,
-                            ),
+                            onTap: () =>
+                                SystemActions.openInOs(status.releaseNotesUrl!),
                             child: Semantics(
                               button: true,
                               label: l.doctorLinkReleaseNotes,
                               child: Text(
                                 l.doctorReleaseNotes(status.releaseNotesUrl!),
-                                style: ChainTheme.mono(
+                                style:
+                                    ChainTheme.mono(
                                       size: 11,
                                       color: theme.colorScheme.primary,
                                     ).copyWith(
                                       decoration: TextDecoration.underline,
-                                  decorationColor: theme.colorScheme.primary,
+                                      decorationColor:
+                                          theme.colorScheme.primary,
                                     ),
                               ),
                             ),

pubspec.yaml

@@ -1,7 +1,7 @@
 name: chain_studio
 description: "Ch∆In Studio — desktop GUI for the Ch∆In hub"
 publish_to: 'none'
-version: 0.79.0
+version: 0.80.0
 
 environment:
   sdk: ^3.11.0-200.1.beta

test/ollama_service_suggestion_test.dart

@@ -0,0 +1,149 @@
+// The doctor's "declare the system AI's Ollama as a host service"
+// suggestion and the shell's one-time update hint — both are pure
+// functions so every branch is pinned here.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'package:chain_studio/data/hub.dart';
+import 'package:chain_studio/main.dart'
+    show StudioApp, shouldShowUpdateHint;
+import 'package:chain_studio/pages/doctor.dart'
+    show suggestOllamaServiceEndpoint;
+
+import 'support/fake_hub.dart';
+
+SystemAiStatus _ai({
+  bool enabled = true,
+  String provider = 'ollama',
+  String endpoint = 'http://127.0.0.1:11434/v1',
+}) => SystemAiStatus(
+  enabled: enabled,
+  provider: provider,
+  endpoint: endpoint,
+  model: 'qwen2.5:14b',
+  privacyMode: 'off',
+  apiKeyEnv: '',
+);
+
+void main() {
+  group('suggestOllamaServiceEndpoint', () {
+    test('suggests the base URL with the /v1 suffix stripped', () {
+      expect(
+        suggestOllamaServiceEndpoint(ai: _ai(), services: const []),
+        'http://127.0.0.1:11434',
+      );
+    });
+
+    test('nothing to suggest when AI is off or another provider', () {
+      expect(
+        suggestOllamaServiceEndpoint(ai: _ai(enabled: false), services: const []),
+        isNull,
+      );
+      expect(
+        suggestOllamaServiceEndpoint(
+          ai: _ai(provider: 'openai'),
+          services: const [],
+        ),
+        isNull,
+      );
+      expect(
+        suggestOllamaServiceEndpoint(ai: _ai(endpoint: ''), services: const []),
+        isNull,
+      );
+    });
+
+    test('a declared service on the same host:port silences it', () {
+      expect(
+        suggestOllamaServiceEndpoint(
+          ai: _ai(),
+          services: const [
+            ServiceEntry(
+              name: 'my-llm',
+              endpoint: 'http://127.0.0.1:11434',
+              tags: [],
+            ),
+          ],
+        ),
+        isNull,
+      );
+    });
+
+    test('a service on another port does not silence it', () {
+      expect(
+        suggestOllamaServiceEndpoint(
+          ai: _ai(),
+          services: const [
+            ServiceEntry(
+              name: 'judge-ner',
+              endpoint: 'http://127.0.0.1:8756',
+              tags: [],
+            ),
+          ],
+        ),
+        'http://127.0.0.1:11434',
+      );
+    });
+  });
+
+  testWidgets('the shell hints once and dismisses persistently', (
+    tester,
+  ) async {
+    SharedPreferences.setMockInitialValues({});
+    final fake = installFakeHub();
+    fake.updateHint = const UpdateStatus(
+      channel: 'stable',
+      localVersion: '0.22.0',
+      latestVersion: '0.23.0',
+      updateAvailable: true,
+      manifestReachable: true,
+    );
+    await tester.pumpWidget(
+      const StudioApp(
+        initialThemeMode: ThemeModeValue.dark,
+        initialLocale: Locale('de'),
+      ),
+    );
+    for (var i = 0; i < 8; i++) {
+      await tester.pump(const Duration(milliseconds: 100));
+    }
+    expect(find.textContaining('0.23.0'), findsOneWidget);
+    await tester.tap(find.text('Später'));
+    await tester.pump(const Duration(milliseconds: 100));
+    expect(find.textContaining('0.23.0'), findsNothing);
+    // Dismissal is persisted per version.
+    final prefs = await SharedPreferences.getInstance();
+    expect(prefs.getString('update.hint.dismissed'), '0.23.0');
+    // Drain shell timers (a11y-suite pattern).
+    await tester.pumpWidget(const SizedBox.shrink());
+    await tester.pump(const Duration(minutes: 1));
+  });
+
+  group('shouldShowUpdateHint', () {
+    test('hints once per release version', () {
+      expect(
+        shouldShowUpdateHint(latestVersion: '0.23.0', dismissedVersion: null),
+        isTrue,
+      );
+      expect(
+        shouldShowUpdateHint(
+          latestVersion: '0.23.0',
+          dismissedVersion: '0.22.0',
+        ),
+        isTrue,
+      );
+      expect(
+        shouldShowUpdateHint(
+          latestVersion: '0.23.0',
+          dismissedVersion: '0.23.0',
+        ),
+        isFalse,
+      );
+      expect(
+        shouldShowUpdateHint(latestVersion: '', dismissedVersion: null),
+        isFalse,
+      );
+    });
+  });
+}

test/support/fake_hub.dart

@@ -257,6 +257,20 @@ class FakeHubService extends Fake implements HubService {
   Future<List<N8nEndpointInfo>> listN8nEndpoints() =>
       _async('listN8nEndpoints', () => const []);
 
+  /// Scriptable update hint for the shell banner test.
+  UpdateStatus? updateHint;
+
+  @override
+  Future<UpdateStatus?> checkHubUpdate() async => updateHint;
+
+  @override
+  Future<bool> declareService({
+    required String name,
+    required String endpoint,
+    String healthPath = '',
+    List<String> tags = const [],
+  }) => _async('declareService', () => true);
+
   @override
   Future<DoctorSnapshot> doctor() => _async(
     'doctor',