Joseph Doherty
8df35cd63a
WRK-22/IPC-26: tombstone a WriteAsync/WriteBatchAsync cancelled while waiting for the write lock (PendingFrame.Claimed under _gate; DequeueNext skips cancelled, claims the frame it returns) so a cancelled write never reaches the wire unless already claimed mid-write (documented residual). WRK-25: add WriteBatchAsync; RunEventDrainLoopAsync submits the drained event batch through it, so a burst of N events costs one flush not N. IPC-30 oversized-event structured fault preserved via FindOversizedEvent. WRK-24: reject a below-1024 negotiated frame maximum at the handshake (MinNegotiableFrameBytes, matching GatewayOptionsValidator floor). WRK-27: alarm poll advertises StaCallInProgress on the heartbeat snapshot so the watchdog suppresses to the ceiling, not the grace. Docs (WorkerFrameProtocol.md, MxAccessWorkerInstanceDesign.md) and the 2026-07-12 remediation registers/change-log updated in the same commit.