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cryptnox-pos 1.0.0
Standalone USDC payment terminal firmware (ESP32 + Cryptnox smart card)
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| Application core | Boot sequence, payment-flow orchestration and the ESP-IDF entry point |
| Ethereum transaction layer | Address parsing, RLP/keccak encoding and the JSON-RPC client |
| Device services | Wi-Fi / SNTP bring-up and persistent NVS settings |
| User interface | Touchscreen screens, events and transaction-state display |