fix(notify): daily summary includes lists shared through a group

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/api/notify_test.go

@@ -158,3 +158,33 @@ func TestDailySummary(t *testing.T) {
 		t.Fatal("only one summary per day")
 	}
 }
+
+func TestDailySummaryIncludesGroupSharedLists(t *testing.T) {
+	srv, sent := notifyServer(t)
+	store := srv.store
+	owner, _ := newTestUser(t, store, "chef@example.com")
+	me, _ := newTestUser(t, store, "team@example.com")
+	team, err := store.CreateTeam("", "Arbeit", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, uid := range []string{owner.ID, me.ID} { // the owner must see the group to share with it
+		if err := store.AddTeamMember(team.ID, uid, "member"); err != nil {
+			t.Fatal(err)
+		}
+	}
+	list, _ := store.CreateTaskList(owner.ID, "", "", "Projekt", "📋", "#000000")
+	if _, err := store.AddTaskListShare(list.ID, "team", team.ID, "editor", owner.ID); err != nil {
+		t.Fatal(err)
+	}
+	th, _ := store.CreateThoughtWithDetails(owner.ID, "Bericht abgeben", "normal", "manual", "2026-10-30T10:00", list.ID, "todo", "")
+	_, _ = store.UpdateThoughtTriage(owner.ID, th.ID, "keep", "task", "", "2026-10-30T10:00", list.ID)
+
+	set := store.NotificationSettingsOf(me.ID)
+	set.DailySummary = domain.DailySummary{Enabled: true, Time: "07:00", Email: true}
+	_ = store.SetNotificationSettings(me.ID, set)
+	srv.sendDailySummaries(time.Date(2026, 10, 30, 7, 1, 0, 0, time.Local))
+	if len(*sent) != 1 || !strings.Contains((*sent)[0].text, "Bericht abgeben (Projekt)") {
+		t.Fatalf("group-shared task missing: %+v", *sent)
+	}
+}