Function build_table_def 

pub fn build_table_def(
    table_name: &str,
    columns: &[ColumnSchema],
) -> Result<TableDefinition, McpError>

Build a hyperdb-api TableDefinition from a list of ColumnSchema.

Uses the consuming builder pattern required by TableDefinition.

Errors

• Returns ErrorCode::EmptyData if columns is empty.
• Returns ErrorCode::SchemaMismatch if any column’s hyper_type cannot be resolved by map_hyper_type.