Files
turnstone/tests
Patrick Buckley 4dd92d150b fix(session): scope the arm-duty gate the way the rest of the file scopes generations
The consumer's arm hook and cancel-partial recorder compared generations
with a bare !=, while the ref that fires them treats generation 0 as
UNSCOPED — so for a direct seam caller the ref armed and fired the hook
and the hook refused to act. On a session whose generation had ever been
claimed, that left the previous turn's usage in place as this turn's
estimate and dropped the serving lane's health success. Both now ask the
consumer's own _superseded(), which mirrors the ref's predicate, so the
two halves of one decision cannot disagree.

The which-errors-speak-for-the-backend policy gets one spelling
(_speaks_for_backend over _NON_BACKEND_ERRORS) instead of a matching
isinstance in each walk arm, and the length arm stops calling
finalize_provider_blocks over an empty list only to discard the result.

Tests: the fourteen hand-rolled FakeChunk dataclasses in the cancel suite
are replaced by the real StreamChunk its sibling suites already use, so
the fakes cannot drift from the shape production emits.
2026-08-06 01:04:32 -07:00
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