Fix ⌘F focus, hung-turn Stop, narrow tabs and other QA findings

internal/agents/mergefacts.go

@@ -86,13 +86,17 @@ func (m *Manager) settleFacts(ctx context.Context, dirty map[string]bool) error
 func (m *Manager) settleTaskFacts(ctx context.Context, t api.Task, p api.Project) error {
 	m.factsRun.Lock()
 	defer m.factsRun.Unlock()
-	if t.WorktreePath != "" {
+	gone := func() bool {
 		_, err := os.Stat(t.WorktreePath)
-		if errors.Is(err, fs.ErrNotExist) {
-			return nil
-		}
+		return t.WorktreePath != "" && errors.Is(err, fs.ErrNotExist)
+	}
+	if gone() {
+		return nil
 	}
 	g, err := m.gitFacts(ctx, t, p)
+	if err != nil && gone() {
+		return nil
+	}
 	if err != nil {
 		slog.Error("compute merge facts", "task", t.Id, "err", err)
 		return nil