I-1: GatewayAlarmHistorianWriter no longer dead-letters events cancelled
mid-drain at shutdown. WriteBatchAsync short-circuits remaining events to
RetryPlease once cancellation is requested, and SendOneAsync catches
OperationCanceledException (when the token is cancelled) -> RetryPlease,
so in-flight events stay queued instead of being permanently dropped.
I-2: FasterLogHistorizationOutbox.Dispose now guards the awaited periodic
loop with a broad catch (Exception) after the OperationCanceledException
catch, so a non-Faster teardown fault (e.g. ObjectDisposedException) can
never escape Dispose.
M-1: GatewayTagProvisioner skips the empty EnsureTags round-trip when every
request is non-historizable (early return).
M-2: GatewayTagProvisioner handles plain shutdown cancellation quietly
(Debug, not Warning), counting the unsent batch as Failed, never throwing.
M-3/M-4: Added remove-last-entry (TailAddress truncation branch) and
FIFO implicit-ack (RemoveAsync acks up to and including the target)
durability tests, both reopen-and-survive.
M-5: Clarifying comment in RecoverState on the transient over-capacity
rebuild after a crash between append-commit and drop-truncation-commit.
Claude-Session: https://claude.ai/code/session_012SDSQ3AcaXqPcBtDESBRii
Joseph Doherty
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