Profile a messy CSV before you trust it: column types, null and cardinality shape, outliers, and the join keys — then generate the three questions the data can actually answer.
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npx promptdock@latest install explorer1/csv-insight-pipelineA profiling-first workflow for an unfamiliar CSV. It establishes what the file actually contains — types, nulls, cardinality, outliers, candidate keys — before anyone charts anything, because most bad analysis is a chart drawn over an unexamined column.
The fi
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