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Add multi-row type inference and robust appender casting for DuckDB. Introduces Get-DuckDBBestType to infer the widest SQL type from sample rows and updates Initialize-DuckDBTable, Sync-DuckDBSchema, and Invoke-BufferedWrite to use sampled rows (first up to 100) for column type detection. Fix Write-DuckDBAppender by reading declared column types from the schema and casting values appropriately to avoid DuckDB.NET byte-reinterpretation issues; also use AppendNullValue() to avoid overload resolution problems. Adds tests covering multi-row inference and numeric casting behavior, and bumps module version to 0.3.7.
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Add multi-row type inference and robust appender casting for DuckDB. Introduces Get-DuckDBBestType to infer the widest SQL type from sample rows and updates Initialize-DuckDBTable, Sync-DuckDBSchema, and Invoke-BufferedWrite to use sampled rows (first up to 100) for column type detection. Fix Write-DuckDBAppender by reading declared column types from the schema and casting values appropriately to avoid DuckDB.NET byte-reinterpretation issues; also use AppendNullValue() to avoid overload resolution problems. Adds tests covering multi-row inference and numeric casting behavior, and bumps module version to 0.3.7.