feat(#3,#4,#7): add backup/restore, polish labels, and rename bulk actions

src/AppRoot.js

@@ -9,6 +9,7 @@ import DatePickerModal from './components/DatePickerModal';
 import AppDialogModal from './components/AppDialogModal';
 import ItemModal from './modals/ItemModal';
 import CheckupFlowModal from './modals/CheckupFlowModal';
+import BackupModal from './modals/BackupModal';
 import TripsTab from './tabs/TripsTab';
 import ItemsTab from './tabs/ItemsTab';
 import CheckupTab from './tabs/CheckupTab';
@@ -85,6 +86,8 @@ export default function AppRoot() {
 
   const [selectedCheckupId, setSelectedCheckupId] = useState(null);
   const [dialogState, setDialogState] = useState({ visible: false, title: '', message: '', buttons: [] });
+  const [backupModalVisible, setBackupModalVisible] = useState(false);
+  const [backupImportText, setBackupImportText] = useState('');
 
   const topInset = Platform.OS === 'android' ? (RNStatusBar.currentHeight || 0) + 10 : 0;
   const fakeLoadTotalMs = useMemo(() => 1200 + Math.floor(Math.random() * 2801), []);
@@ -785,6 +788,58 @@ export default function AppRoot() {
     openAddItemModal();
   }
 
+  function buildBackupJson() {
+    return JSON.stringify(
+      {
+        version: 2,
+        exportedAt: new Date().toISOString(),
+        data,
+      },
+      null,
+      2
+    );
+  }
+
+  function openBackupModal() {
+    setBackupImportText('');
+    setBackupModalVisible(true);
+  }
+
+  function applyBackupImport() {
+    if (!backupImportText.trim()) {
+      showAlert('Missing backup', 'Paste backup JSON first.');
+      return;
+    }
+
+    let parsed;
+    try {
+      parsed = JSON.parse(backupImportText);
+    } catch {
+      showAlert('Invalid JSON', 'Backup JSON could not be parsed.');
+      return;
+    }
+
+    const payload = parsed?.data && typeof parsed.data === 'object' ? parsed.data : parsed;
+
+    if (!payload || typeof payload !== 'object' || !Array.isArray(payload.trips) || !payload.itemsByTrip || !payload.checkupsByTrip) {
+      showAlert('Invalid backup', 'Backup format is not supported.');
+      return;
+    }
+
+    showConfirm({
+      title: 'Import backup?',
+      message: 'This will replace all current local data.',
+      confirmText: 'Import',
+      tone: 'danger',
+      onConfirm: () => {
+        setData({ ...emptyData, ...payload });
+        setBackupModalVisible(false);
+        setBackupImportText('');
+        showAlert('Imported', 'Backup data was restored.');
+      },
+    });
+  }
+
   if (!appReady) {
     return (
       <SafeAreaView style={[styles.safe, { paddingTop: topInset }]}>
@@ -832,6 +887,7 @@ export default function AppRoot() {
               openDatePicker={openDatePicker}
               activeTripItemCount={selectedTripItems.length}
               activeTripCheckupCount={selectedTripCheckups.length}
+              openBackupModal={openBackupModal}
             />
           )}
 
@@ -905,6 +961,15 @@ export default function AppRoot() {
         onFinish={finishCheckupFlow}
       />
 
+      <BackupModal
+        visible={backupModalVisible}
+        onClose={() => setBackupModalVisible(false)}
+        exportJson={buildBackupJson()}
+        importJson={backupImportText}
+        setImportJson={setBackupImportText}
+        applyImport={applyBackupImport}
+      />
+
       <AppDialogModal
         visible={dialogState.visible}
         title={dialogState.title}