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fix(mobile): critical security and error handling improvements

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🔐 SECURITY FIXES:
- Fixed CRITICAL seed storage vulnerability
  * Changed from AsyncStorage to SecureStore for wallet seeds
  * Seeds now encrypted in hardware-backed secure storage
  * Affects: PolkadotContext.tsx (lines 166, 189)

🛡️ ERROR HANDLING:
- Added global ErrorBoundary component
  * Catches unhandled React errors
  * Shows user-friendly error UI
  * Integrated into App.tsx provider hierarchy
  * Files: ErrorBoundary.tsx (new), App.tsx, components/index.ts

🧹 PRODUCTION READINESS:
- Protected all 47 console statements with __DEV__ checks
  * console.log: 12 statements
  * console.error: 32 statements
  * console.warn: 1 statement
  * Files affected: 16 files across contexts, screens, i18n
  * Production builds will strip these out

📦 PROVIDER HIERARCHY:
- Added BiometricAuthProvider to App.tsx
- Updated provider order:
  ErrorBoundary → Polkadot → Language → BiometricAuth → Navigator

Files modified: 18
New files: 1 (ErrorBoundary.tsx)

This commit resolves 3 P0 critical issues from production readiness audit.
This commit is contained in:
Claude
2025-11-21 22:18:11 +00:00
parent 15d6dc62c9
commit 6a86915549
18 changed files with 340 additions and 78 deletions
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mobile/src/screens/WalletScreen.tsx
+5 -5
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@@ -149,7 +149,7 @@ const WalletScreen: React.FC = () => {
}
}
} catch (err) {
console.log('PEZ asset not found or not accessible');
if (__DEV__) console.log('PEZ asset not found or not accessible');
}
// Fetch USDT balance (wUSDT - asset ID 2)
@@ -163,7 +163,7 @@ const WalletScreen: React.FC = () => {
}
}
} catch (err) {
console.log('USDT asset not found or not accessible');
if (__DEV__) console.log('USDT asset not found or not accessible');
}
setBalances({
@@ -172,7 +172,7 @@ const WalletScreen: React.FC = () => {
USDT: usdtBalance,
});
} catch (err) {
console.error('Failed to fetch balances:', err);
if (__DEV__) console.error('Failed to fetch balances:', err);
Alert.alert('Error', 'Failed to fetch token balances');
} finally {
setIsLoadingBalances(false);
@@ -198,7 +198,7 @@ const WalletScreen: React.FC = () => {
await connectWallet();
Alert.alert('Connected', 'Wallet connected successfully!');
} catch (err) {
console.error('Failed to connect wallet:', err);
if (__DEV__) console.error('Failed to connect wallet:', err);
Alert.alert('Error', 'Failed to connect wallet');
}
};
@@ -220,7 +220,7 @@ const WalletScreen: React.FC = () => {
[{ text: 'OK', onPress: () => connectWallet() }]
);
} catch (err) {
console.error('Failed to create wallet:', err);
if (__DEV__) console.error('Failed to create wallet:', err);
Alert.alert('Error', 'Failed to create wallet');
}
};