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>

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';