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Duplicate delivery changes an aggregate · case 04

A replayed event increases a total that should change once per event identity.

Member previewVariant 4 · 3 implementations · 3 checks per implementation

Case scope

A replayed event increases a total that should change once per event identity.

Why this case matters

A compact reasoning and repair task with executable evidence.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
replayed delivery128Failed

MEMBER ARCHIVE

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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