diff --git a/.jules/palette.md b/.jules/palette.md
new file mode 100644
index 0000000..7e6da48
--- /dev/null
+++ b/.jules/palette.md
@@ -0,0 +1,3 @@
+## 2026-04-24 - Missing translation keys break typecheck
+**Learning:** When adding accessibility labels to icon-only buttons via `useLanguage` hook and `t('...')` in this React Native app, adding the new key to `src/i18n/translations.ts` in the base language object (`it`) but missing it in other type-checked language objects (like `const en: typeof it = {...}`) will cause `npm run typecheck` to fail with TS2741.
+**Action:** Always verify that newly added translation keys are duplicated across all language dictionary objects in `translations.ts` to satisfy TypeScript's strict type checking.
diff --git a/src/components/DrawerMenu.tsx b/src/components/DrawerMenu.tsx
index e22e073..6b46ed4 100644
--- a/src/components/DrawerMenu.tsx
+++ b/src/components/DrawerMenu.tsx
@@ -84,7 +84,13 @@ export default function DrawerMenu({ visible, onClose, onSelect }: Props) {
               style={styles.headerGradient}
             >
               <AeroStaffLogo variant="large" monochrome />
-              <TouchableOpacity onPress={onClose} style={styles.closeIconBtn}>
+              <TouchableOpacity
+                onPress={onClose}
+                style={styles.closeIconBtn}
+                accessible={true}
+                accessibilityRole="button"
+                accessibilityLabel={t('close')}
+              >
                 <MaterialIcons name="close" size={20} color="rgba(255,255,255,0.7)" />
               </TouchableOpacity>
             </LinearGradient>
diff --git a/src/components/ShiftTimeline.tsx b/src/components/ShiftTimeline.tsx
index 9c7f60b..e9414b1 100644
--- a/src/components/ShiftTimeline.tsx
+++ b/src/components/ShiftTimeline.tsx
@@ -143,7 +143,13 @@ export default function ShiftTimeline({ visible, onClose, shiftStart, shiftEnd,
               <Text style={[s.title, { color: colors.primaryDark }]}>Voli nel Turno</Text>
               <Text style={[s.subtitle, { color: colors.textSub }]}>{fmtTime(startSec)} – {fmtTime(endSec)}</Text>
             </View>
-            <TouchableOpacity onPress={onClose} style={s.closeBtn}>
+            <TouchableOpacity
+              onPress={onClose}
+              style={s.closeBtn}
+              accessible={true}
+              accessibilityRole="button"
+              accessibilityLabel={t('close')}
+            >
               <MaterialIcons name="close" size={22} color={colors.textSub} />
             </TouchableOpacity>
           </View>
diff --git a/src/i18n/translations.ts b/src/i18n/translations.ts
index 8ccd1e2..727ba1c 100644
--- a/src/i18n/translations.ts
+++ b/src/i18n/translations.ts
@@ -6,7 +6,7 @@ const it = {
   overlayNotepad: 'Blocco Note', overlayPhonebook: 'Rubrica', overlayPasswords: 'Password',
   overlayManuals: 'Manuali DCS', overlaySettings: 'Impostazioni',
   // Common
-  cancel: 'Annulla', save: 'Salva', delete: 'Elimina', error: 'Errore',
+  close: 'Chiudi', cancel: 'Annulla', save: 'Salva', delete: 'Elimina', error: 'Errore',
   confirm: 'Conferma', ok: 'OK', add: 'Aggiungi',
   // Settings
   settingsTitle: 'Impostazioni',
@@ -164,7 +164,7 @@ const en: typeof it = {
   overlayNotepad: 'Notepad', overlayPhonebook: 'Phonebook', overlayPasswords: 'Password',
   overlayManuals: 'DCS Manuals', overlaySettings: 'Settings',
   // Common
-  cancel: 'Cancel', save: 'Save', delete: 'Delete', error: 'Error',
+  close: 'Close', cancel: 'Cancel', save: 'Save', delete: 'Delete', error: 'Error',
   confirm: 'Confirm', ok: 'OK', add: 'Add',
   // Settings
   settingsTitle: 'Settings',