Security Architecture (Secure by Design)Data ProtectionData Protection 📄️ Encryption in Transit (TLS, mTLS)TBD📄️ Encryption at Rest (envelope encryption)TBD📄️ Key Management (HSM/KMS, rotation, separation)TBD📄️ Hashing & Password StorageTBD📄️ Tokenization & PseudonymizationTBD