feat: localization of core/bitbox

[gluneau]

Localization: core/bitbox

Overview

• Feature: lib/core/bitbox and lib/features/bitbox
• Strings localized: 68
• Files modified: 8 (5 Dart files + 3 ARB files)
• Branch: localization/core-bitbox

Changes

• Added BuildContextX import to affected files
• Replaced hardcoded strings with context.loc calls
• Added ARB keys with proper naming convention
• Validated with validation scripts
• Tested with flutter analyze

Implementation Pattern

This follows the toTranslated() method pattern (like RecoverBullError):

• BitBoxError stores error object in state (not String)
• UI calls error.toTranslated(context) for localized display
• Logging uses $e (toString of error)
• Pattern matching replaces string comparison for error type checks

Localized Strings

Error Messages (14 keys):

• bitboxErrorPermissionDenied, bitboxErrorNoDevicesFound, bitboxErrorMultipleDevicesFound
• bitboxErrorDeviceNotFound, bitboxErrorConnectionTypeNotInitialized, bitboxErrorNoActiveConnection
• bitboxErrorDeviceMismatch, bitboxErrorInvalidMagicBytes, bitboxErrorDeviceNotPaired
• bitboxErrorHandshakeFailed, bitboxErrorOperationTimeout, bitboxErrorConnectionFailed
• bitboxErrorInvalidResponse, bitboxErrorOperationCancelled

BitBox Actions (30 keys):

• Titles, buttons, processing texts, success messages, and subtexts for:
  • Unlock Device, Pair Device, Import Wallet, Sign Transaction, Verify Address

Screen UI (24 keys):

• Status messages (connect, scanning, connecting, pairing, password, verify, error)
• Button labels (Try Again, Manage Permissions, Need Help)
• Script type selection (Segwit BIP84, Nested Segwit BIP49)
• Troubleshooting instructions (3 steps)

Code Changes

1. bitbox_errors.dart: Added toTranslated(BuildContext context) method
2. bitbox_action.dart: Converted getters to methods (title → toTitle(context))
3. bitbox_operation_state.dart: Changed String? errorMessage to BitBoxError? error
4. bitbox_operation_cubit.dart: Store error objects instead of strings
5. bitbox_action_screen.dart: Use context.loc.* and pattern matching for errors

Validation Results

✅ validate_localizations.py - All 2658 keys synchronized
✅ flutter analyze --fatal-warnings --fatal-infos - No issues found

Testing

• All localization keys exist in ARB files
• No hardcoded strings remain
• Changed files pass flutter analyze
• Follows naming conventions

[ethicnology]

#740