docs: add THD89 SE command reference

[Shoyo1024]

Summary

• Add the OneKey THD89 Secure Element runtime command interface documentation
• Covers full APDU command set, MCU–SE key agreement protocol, and independent evaluation guide
• Placed in docs/OneKey_THD89_SE_Command.md

Contents

• Communication interface: I2C, 1024-byte max TX/RX
• MCU–SE key agreement protocol: ECDH (secp256k1) + AES-128 secure messaging with sequence diagram
• Full APDU command set: system, device info, FIDO/U2F, mnemonics & data management, PIN/security, session/seed, key derivation, signing (ECDSA/Ed25519/BIP340 Schnorr), ECDH, AES, SLIP21, CoinJoin, fingerprint
• Status codes (SW1SW2) reference
• Data encoding conventions: BIP32 path, curve identifiers, signature format
• Omitted factory-only commands with rationale
• Independent evaluation guide: 8 test scenarios for reviewers to verify SE behavior without source code access

Made with Cursor

[revan-zhang]

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