Storage overview

stackchain:
  storage:
    - shared_preferences
    - secure_storage

Value	Package
shared_preferences	shared_preferences
secure_storage	flutter_secure_storage
hive	hive + hive_flutter

Default: [shared_preferences, secure_storage].

Always generated:

• lib/core/storage/storage_keys.dart
• lib/core/storage/cache_manager.dart

SessionService uses secure storage + prefs when present.