Luca Sacchi Ricciardi 2fdd9d16fd feat(security): T12 implement AES-256 encryption service ...

- Add EncryptionService with AES-256-GCM via cryptography.fernet
- Implement PBKDF2HMAC key derivation with SHA256 (100k iterations)
- Deterministic salt derived from master_key for consistency
- Methods: encrypt(), decrypt() with proper error handling
- 12 comprehensive tests with 100% coverage
- Handle InvalidToken, TypeError edge cases

2026-04-07 12:03:45 +02:00

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