feat: add settings to chose timzone and add markdown readability on main page

backend/internal/scheduler/scheduler.go

@@ -57,9 +57,14 @@ func (s *Scheduler) loadSchedule() error {
 		return nil
 	}
 
+	tz, _ := s.repo.GetSetting("timezone")
+	if tz == "" {
+		tz = "UTC"
+	}
+
 	for _, slot := range slots {
-		// Format cron: "minute hour * * day_of_week"
-		spec := fmt.Sprintf("%d %d * * %d", slot.Minute, slot.Hour, slot.DayOfWeek)
+		// TZ= prefix permet à robfig/cron d'interpréter les heures dans le fuseau configuré
+		spec := fmt.Sprintf("TZ=%s %d %d * * %d", tz, slot.Minute, slot.Hour, slot.DayOfWeek)
 		id, err := s.cron.AddFunc(spec, s.run)
 		if err != nil {
 			fmt.Printf("scheduler: invalid cron spec %q: %v\n", spec, err)
@@ -68,7 +73,7 @@ func (s *Scheduler) loadSchedule() error {
 		s.entryIDs = append(s.entryIDs, id)
 	}
 
-	fmt.Printf("scheduler: %d time slots loaded\n", len(s.entryIDs))
+	fmt.Printf("scheduler: %d time slots loaded (timezone: %s)\n", len(s.entryIDs), tz)
 	return nil
 }