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Usar cópia temporária do catálogo nos comandos de leitura do lake - #112
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Os comandos tables, years, download, query e ui baixavam o catálogo para o meta.ducklake da pasta atual, o mesmo arquivo que os pipelines alteram com o dbt e sobem de volta ao bucket no fim. Uma consulta rodada durante um pipeline revertia o catálogo local, e o pipeline subia a versão antiga, perdendo o que tinha acabado de gravar. Agora os comandos de leitura baixam o catálogo para uma pasta temporária própria, apagada ao sair. drop-table e maintenance, que sobem o catálogo com fechar(), continuam usando o meta.ducklake compartilhado.
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Resolve #111
O que muda
tables,years,download,queryeuibaixam o catálogo para uma pasta temporária (apagada ao sair), e não mais para ometa.ducklakeda pasta atual.drop-tableemaintenancecontinuam nometa.ducklakecompartilhado, porque sobem o catálogo de volta comfechar().baixar_catalogo()econectar()ganham um parâmetro opcional com o caminho local; o padrão continua o de hoje, então os pipelines não mudam.Como testei
tests/test_catalogo_local.py(sem rede): falham com o código antigo e passam com o PR. Suíte inteira: 55 passed; ruff ok.meta.ducklakedo "pipeline" fica igual (mesmo md5) depois delake queryelake tables, as consultas respondem normalmente e nenhuma pasta temporária sobra.