Files
Joseph Doherty a92fb81f00 fix(twincat): review — a connect failure no longer burns the sum-chunk warning; doc precision
- ReadBucketAsync: the once-per-device "sum-read chunk failed" Warning fires only after a successful
  connect; a connect/backoff failure is the connect path's to report. TwinCATSumChunkWarningTests pins
  it (no warning across connect failures, exactly one across two later failing sum polls; red without
  the guard) plus a source guard that ReadGroupAsync builds its SumRead only via CreateSumRead.
- Docs: diagnostics live-gated via the driver harness (/hosts not exercised); TC2 costs 8 reads on the
  first tick and after each reconnect, then <= 4; read counts attributed to the unit tests.

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
2026-10-08 21:26:26 -04:00
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