Sensor-to-Chain Pattern

Reference examples:

• sol/examples/sensor_to_chain_demo/sensor_to_chain_demo.ino
• sol/examples/temperature_dht22_demo/temperature_dht22_demo.ino
• sol/examples/temperature_thermistor_demo/temperature_thermistor_demo.ino
• sol/examples/temperature_thermocouple_demo/temperature_thermocouple_demo.ino
• sol/examples/air_mq135_demo/air_mq135_demo.ino
• sol/examples/gps_neo7m_demo/gps_neo7m_demo.ino

Canonical Flow

1. Read sensor values.
2. Normalize to fixed-point or compact byte encoding.
3. Build instruction payload.
4. Sign and send transaction.
5. Monitor confirmation and handle retries.