ms aa31532d8c Fix multiple bugs and harden modb_orno3.c ...

- Fix NULL pointer dereference: move modbus_set_slave after ctx validation (ORNO)
- Fix InfluxDB line protocol: remove stray comma in voltage measurement
- Move InfluxDB token to env variable INFLUX_TOKEN with fallback to default
- Fix spike detection for negative power values using fabs()
- Read and validate HTTP response from InfluxDB after writes
- Replace all sprintf with snprintf to prevent buffer overflows
- Batch ORNO InfluxDB writes into single TCP connection (5→1)
- Fix non-portable absolute include path for modbus-rtu.h

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-14 19:32:04 +01:00

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