snapshot_admits_and_reads_back now counts pipeline envelopes apart from the
loop, asserts validate() and pipeline_key == stored key for every one, admits
a resolution for every stuck finding and a withdrawal for every unwithdrawable
resolution, and fails with the id named on any refusal.
The refusal tests assert the exact leaf refusal (field and value from
pipeline_key) at Mind::admit and at the helper, and eureka-state gains a
tool-level test that the typed refusal reaches the result intact.
Tests only; no production code changes.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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