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fix(runs): stop claiming the hub is unreachable on RPC-level errors

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The runs monitor folded every load failure into 'hub not reachable',
contradicting the sidebar's green connected dot whenever the hub
answered but the RPC failed — most visibly against a pre-0.22 hub
whose version predates the ListInvocations RPC (UNIMPLEMENTED).

Classify the failure instead (top-level, unit-tested):
- UNIMPLEMENTED -> 'this view needs a newer hub version' with a
  doctor-page link (the update banner lives there)
- FAILED_PRECONDITION from the detached gate -> the regular
  feature-off empty state with the guide button
- UNAVAILABLE / DEADLINE_EXCEEDED / socket-level failures -> the
  honest 'hub not reachable' state (unchanged)
- everything else -> a load-failed state with the friendly error
  and a copyable detail box

The error view is a public callback-driven widget so the tests pump
each variant without a live hub. New DE+EN strings for the too-old
and load-failed states; grpcCodeOf/grpcMessageOf exposed from the
friendly-error mapper instead of duplicating the duck-typing.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
This commit is contained in:
flemming-it 2026-07-18 17:33:11 +02:00
parent b47d8c4646
commit ea2cd87b5e
8 changed files with 380 additions and 7 deletions
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24
lib/l10n/app_localizations.dart
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@ -5401,6 +5401,30 @@ abstract class AppLocalizations {
/// **'Open the guide'**
String get runsEmptyGuideButton;
/// No description provided for @runsHubTooOldTitle.
///
/// In en, this message translates to:
/// **'This view needs a newer hub version'**
String get runsHubTooOldTitle;
/// No description provided for @runsHubTooOldHint.
///
/// In en, this message translates to:
/// **'The hub is connected, but its version does not know the runs monitor yet. Update the hub and the runs will appear here.'**
String get runsHubTooOldHint;
/// No description provided for @runsHubTooOldButton.
///
/// In en, this message translates to:
/// **'Open Doctor'**
String get runsHubTooOldButton;
/// No description provided for @runsLoadFailedTitle.
///
/// In en, this message translates to:
/// **'Runs could not be loaded'**
String get runsLoadFailedTitle;
/// No description provided for @runsCancelButton.
///
/// In en, this message translates to: