The empty state explained itself in operator jargon (detach,
detached.enabled, operator config) and offered no way forward.
Now it says what background runs are in everyday language and
opens the built-in guide — which carries the exact activation
steps — via a real button. DE and EN.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
New Runs sidebar destination listing detached invocations (detach:true)
with phase, current step, project and a Cancel button while
pending/running. Workspace-scoped like Audit/Approvals, polls every 2s.
Detached runs are opt-in (detached.enabled) — the empty state explains
how to enable them. Inline help doc DE+EN. DetachedRun model +
listDetachedRuns/cancelDetachedRun in HubService, backed by the SDK's
listInvocations()/cancelInvocation(). flutter analyze clean; 29 tests
green (sidebar Y-stability updated for the new destination, model
mapping unit-tested).
Screenshot verification (light+dark) deferred — shared desktop in use.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
