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_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';