fix: decouple cache compatibility from native binary hash - #20
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A recompilação do backend nativo podia rejeitar caches válidos mesmo quando o formato e os resultados da preparação permaneciam compatíveis. A compatibilidade agora usa
FORMAT_VERSIONePREPARATION_SEMANTICS, sem exigir igualdade do hash do binário.Caches antigos com
native_sha256preservam suas chaves e podem ser lidos ou retomados quando os contratos são compatíveis. As verificações de conteúdo, configuração e integridade permanecem ativas. Mudanças incompatíveis na preparação exigem atualizar explicitamentePREPARATION_SEMANTICS.A PR contém apenas quatro arquivos de implementação e um arquivo de testes, sem documentação ou notebooks.
Validação: 282 testes aprovados na suíte focada de compatibilidade, persistência, validação do cache, preparação, dataset cache e pixel maps, executada sobre a main atual com importação isolada do checkout da PR e extensão nativa local.
git diff --checktambém passou.