TestDbFactory was redeclared as a private nested class in 40 test files,
NullServiceProvider and StubNotesApi in 14 each, DefaultStub in 5 — 73
declarations, all semantically identical (StubNotesApi differed only in
formatting and type qualification). They now live in TestDoubles.cs next to the
existing StubWorkerClient, which was already the shared-double pattern in this
project.
The task-numbers slice added a UNIQUE index on tasks.number. Ui.Tests seed
TaskEntity rows directly instead of going through TaskRepository, so every row
kept the default Number = 0 and 31 tests failed with
'UNIQUE constraint failed: tasks.number'.
Switching lists rebuilt Tasks.Items from scratch but left SelectedTask pointing
at a row from the previous list, so the detail pane kept showing that task even
though it is not in the visible list. Drop the selection when the list actually
changes; a reload of the same list (worker refresh, reconnect) keeps it so a
live update never yanks the detail pane away.