fix: skip untracked workdays when closing a week

Previously any past workday without a closed_days record blocked week
close. Now only days that actually have entries require an explicit
close. Empty workdays count as 0h worked, which is reflected in the
weekly delta automatically.

- WeekService.CloseWeek: after finding no closed_days record, check
  whether the day has any entries; only error if it does
- NewWeekService: takes EntryStore to support the above check
- Updated TestCloseWeekMissingDayFails to reflect the new semantic
  (test now creates entries on Friday but leaves it unclosed)

internal/service/week_service_test.go

@@ -27,7 +27,7 @@ func newFullServices(t *testing.T) (*service.EntryService, *service.DayService,
 
 	entrySvc := service.NewEntryService(entryStore, closedDayStore, settingsStore, tz)
 	daySvc := service.NewDayService(entryStore, closedDayStore, settingsStore, tz)
-	weekSvc := service.NewWeekService(closedDayStore, closedWeekStore, settingsStore, db, tz)
+	weekSvc := service.NewWeekService(closedDayStore, closedWeekStore, entryStore, settingsStore, db, tz)
 	settingsSvc := service.NewSettingsService(settingsStore)
 	return entrySvc, daySvc, weekSvc, settingsSvc
 }
@@ -88,19 +88,32 @@ func TestCloseWeekBasic(t *testing.T) {
 }
 
 func TestCloseWeekMissingDayFails(t *testing.T) {
+	// A past workday that HAS entries but was never closed should still block week close.
 	ctx := context.Background()
-	_, daySvc, weekSvc, _ := newFullServices(t)
+	entrySvc, daySvc, weekSvc, _ := newFullServices(t)
 
-	// Only close Mon-Thu, leave Friday open — all are in the past
+	// Use a fixed past week: 2024-W03 (Mon 2024-01-15 .. Sun 2024-01-21)
 	monday := time.Date(2024, 1, 15, 0, 0, 0, 0, time.UTC)
+
+	// Close Mon–Thu as holiday.
 	for i := 0; i < 4; i++ {
 		dk := monday.AddDate(0, 0, i).Format("2006-01-02")
 		daySvc.MarkDay(ctx, dk, domain.DayKindHoliday)
 	}
 
+	// Friday (2024-01-19): add a completed entry but do NOT close the day.
+	fridayStart := time.Date(2024, 1, 19, 9, 0, 0, 0, time.UTC).UnixMilli()
+	fridayEnd := time.Date(2024, 1, 19, 17, 0, 0, 0, time.UTC).UnixMilli()
+	if _, err := entrySvc.CreateInterval(ctx, service.CreateIntervalInput{
+		StartTime: fridayStart,
+		EndTime:   fridayEnd,
+	}); err != nil {
+		t.Fatalf("CreateInterval: %v", err)
+	}
+
 	_, err := weekSvc.CloseWeek(ctx, "2024-W03")
 	if err == nil {
-		t.Fatal("expected error closing week with unclosed past day")
+		t.Fatal("expected error: friday has entries but is not closed")
 	}
 }