BlackMark 9cc69d1dcd Test the input seqlock and the IPC magic/version handshake ...

New protocol_test covers two previously-untested cross-process contracts:
- publish_pads/read_pads seqlock: a concurrent writer + reader run for ~700 ms;
  the reader (2.5M snapshots) never observes a torn snapshot, and read_pads
  returns false (bounded, no hang) when the sequence is stuck odd mid-write.
- IpcClient::connect refuses a section with a mismatched version or a bad magic,
  and accepts a matching header -- the ABI safety net that only had happy-path
  coverage before.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-24 01:59:40 +02:00

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