Work Done
Reviewed only the telemetry design in mono PR 337 against the requested base commit. Traced the custom Telemetry JSONL sink, its storage download call site, transfer statistics, tests, and client lifecycle. Recommended standard structured Python logging configured by the host application instead of an SDK-owned file sink, unless automatic VXDATA_TELEMETRY_DIR files are a firm requirement.
Lessons Learned: Pitfalls
The broad infrastructure workstream material was not needed for this narrow code review. The mandatory git pull --ff-only failed with “Cannot fast-forward to multiple branches”; git fetch origin main followed by git merge --ff-only origin/main worked.
Lessons Learned: Improvements
A short durable note on observability ownership would help future reviews: reusable SDKs should normally emit through standard logging and leave destinations, formatting, rotation, and shipping to applications. SDK-owned sinks need explicit close, rollover, and shared-writer semantics.