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Replacing a dirty value with a read result silently loses pending writes · case 02

Replacing a dirty value with a read result silently loses pending writes.

Member previewVariant 2 · 3 implementations · 4 checks per implementation

Case contract

Entry is [value,dirty]. A fetched value replaces only clean state; a dirty local write remains authoritative until flushed.

Why this case matters

A deterministic cache state transformation. Inputs are copied or treated as immutable; no remote storage, real clock, or concurrent interleaving is simulated.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 1	`["remote", false]`	`["local", true]`	Failed

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