fix: merge main, address code review feedback for security fix PR #816

- Merge origin/main into branch (resolve conflict in integrations_dashboard.html)
- Add defensive JSON parsing with try/except for integration.config
- Wrap tester() call in try/except to prevent 500 errors from bad config
- Add i18n key integrations.connection_test_failed_fallback in en.json
- Reference i18n key in template JS fallback message
- Update SECURITY_AUDIT.md: add fix date (2026-03-23), update doc date
- Remove accidental revert.sh file
- Fix missing MagicMock/patch imports in test file
- Add tests for invalid JSON config and tester exception error paths

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
Agent-Logs-Url: https://github.com/christianlouis/DocuElevate/sessions/daebb70e-059a-4601-8864-88eef49f99cf

mobile/app/(auth)/_layout.tsx

@@ -12,6 +12,7 @@ export default function AuthLayout() {
     <Stack screenOptions={{ headerShown: false }}>
       <Stack.Screen name="index" />
       <Stack.Screen name="login" />
+      <Stack.Screen name="qr-scanner" />
     </Stack>
   );
 }

mobile/app/(auth)/qr-scanner.tsx

@@ -0,0 +1,4 @@
+/**
+ * QR scanner route – camera-based QR code scanning for mobile login.
+ */
+export { default } from "../../src/screens/QRScannerScreen";