- telemetry.py: client library, tlog(group, data) sends JSON over ZMQ PUSH
- telemetryd.py: collector process, diffs against previous state per group,
writes only changed values to /data/log2/{session}/telemetry.csv
- Registered as always-run managed process in process_config.py
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>