chore: release v1.5.0 (#67)

* chore: release v1.4.0

* feat: timezone-aware locale formatting

- Add TIMEZONE_TO_REGION map for 50+ timezones worldwide
- Combine app language with timezone region (e.g., en + Europe/Berlin → en-DE)
- Fix times displaying in wrong timezone (treated as UTC instead of local)
- Add parseLocalDateTime() to handle ISO strings without UTC conversion
- Users now get regional formatting (24h time, local date format) regardless of app language
- Swedish user with en-SE locale now gets yyyy-mm-dd format and 24h time
- German user with en-DE locale gets dd.mm.yyyy format and 24h time
- Add missing i18n translation key 'lastSent'
- Update all getSystemLocale() calls to pass app language parameter

* chore: release v1.5.0

* fix: timezone-independent test for CI (use 14:00 instead of 22:00)

* fix: make timezone test independent of server timezone

frontend/src/hooks/useMedicationForm.ts

@@ -33,6 +33,7 @@ export interface UseMedicationFormReturn {
 	form: FormState;
 	setForm: React.Dispatch<React.SetStateAction<FormState>>;
 	originalForm: FormState;
+	setOriginalForm: React.Dispatch<React.SetStateAction<FormState>>;
 	editingId: number | null;
 	setEditingId: React.Dispatch<React.SetStateAction<number | null>>;
 	showEditModal: boolean;
@@ -133,7 +134,7 @@ export function useMedicationForm(): UseMedicationFormReturn {
 	const startEdit = useCallback((med: Medication, openEditModal: () => void) => {
 		setEditingId(med.id);
 		setTakenByInput(""); // Clear tag input when starting edit
-		setFormSaved(false);
+		setFormSaved(true); // Existing medication is already saved
 		const editForm: FormState = {
 			name: med.name,
 			genericName: med.genericName ?? "",
@@ -204,6 +205,7 @@ export function useMedicationForm(): UseMedicationFormReturn {
 		form,
 		setForm,
 		originalForm,
+		setOriginalForm,
 		editingId,
 		setEditingId,
 		showEditModal,