Track the number of bytes written per request for both InfluxDB and Prometheus outputs.
InfluxDB:
- Added bytesT counter constant
- Implemented calculateMetricBytes() to estimate line protocol size
- Updated batchV1() and batchV2() to count bytes per point
- Updated log output to display bytes written
Prometheus:
- Added Bytes field to Report struct
- Updated export() to calculate approximate metric byte size
- Updated log output to display bytes written
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>