Three causes behind the stuck indicator:
- OperationStatus.End did not retire the generation, so tick work posted
while the dispatcher was blocked drained afterwards and set
ShowIndicator back to true on a finished operation.
- The startup update check ran in Task.Run; OperationStatus writes its
observable properties on the calling thread, so the final
ShowIndicator=false never reached the binding.
- OperationIndicator overwrote its own DataContext from the Status
property, which re-targeted the call-site binding. It now scopes the
DataContext to an inner panel and collapses itself when Status is
null; every call site switched from DataContext= to Status=.
Also gates the footer connection pill in the command body instead of
CanExecute (a disabled command greyed out the ONLINE chip), and extends
OperationTiming: pid per line, 4 MB rollover, fast successes dropped
(failures always kept), and DetailsIsland.BindAsync now carries the
selection trigger via TasksIslandViewModel.SelectFrom.
Foundation for long-running-operation feedback (P0-1). OperationStatus tracks
IsRunning/ShowIndicator(300ms grace)/Elapsed/IsStalled(60s since last Report)
via an injectable TimeProvider, no static timer. OperationIndicator binds a
status to the shared spinner style. Pre-provisions ops.* locale keys for
groups A and C; no ViewModel wired up yet.