fix: restore green test suite across all projects

* TaskRepository.UpdateAsync defensively detaches any locally tracked
  entity with the same Id before attaching the patched copy, preventing
  EF identity conflicts when callers load via AsNoTracking and write
  back through the same DbContext (surfaced by ExternalMcpService
  UpdateTask integration tests).
* TasksIslandViewModel auto-collapse now only fires for Finalized
  planning parents that are not yet Done. Active-phase parents stay
  expanded while the user is editing the plan, and Done parents stay
  expanded so all completed children land in CompletedItems alongside
  the parent.
* Update three Ui.Tests fakes (ConflictResolution, PlanningDiff,
  DetailsIslandPlanning) to implement the two new IWorkerClient
  members (OpenInteractiveTerminalAsync, QueuePlanningSubtasksAsync).
* Rewrite StreamLineFormatterTests to exercise the current
  assistant/user/result/system message format instead of the legacy
  stream_event parsing that was removed in the formatter rewrite.
* Align AppSettingsRepository seed-default assertion with the
  permission-mode default that flipped from bypassPermissions to auto.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/ClaudeDo.Worker.Tests/Repositories/AppSettingsRepositoryTests.cs

@@ -21,7 +21,7 @@ public class AppSettingsRepositoryTests : IDisposable
         Assert.Equal(AppSettingsEntity.SingletonId, row.Id);
         Assert.Equal("sonnet", row.DefaultModel);
         Assert.Equal(100, row.DefaultMaxTurns);
-        Assert.Equal("bypassPermissions", row.DefaultPermissionMode);
+        Assert.Equal("auto", row.DefaultPermissionMode);
         Assert.Equal("sibling", row.WorktreeStrategy);
         Assert.Null(row.CentralWorktreeRoot);
         Assert.False(row.WorktreeAutoCleanupEnabled);