**Motivations:**
- Provide a dedicated interface for managing Nostr keys
- Allow users to view public keys (npub and hex)
- Enable importing private keys via URL or text format
- Respect the existing two-level encryption system
**Root causes:**
- No dedicated interface for key management
- Users need to view their public keys easily
- Users need to import keys in various formats (nsec URL, nsec text, hex)
**Correctifs:**
- None (new feature)
**Evolutions:**
- Created KeyManagementManager component for key management
- Added public key display (npub and hex formats)
- Implemented private key import with support for:
- nostr:// URLs with nsec
- nsec text format (nsec1...)
- hex format (64 characters)
- Automatic key extraction from URLs
- Account replacement warning and confirmation
- Recovery phrase display after import
- Individual copy buttons for each key format
- Integration in settings page
**Pages affectées:**
- components/KeyManagementManager.tsx (new)
- pages/settings.tsx (modified)
- features/key-management-configuration.md (new)
