Convert a Column Number to an Excel-Style Label

Convert a one-based spreadsheet column number into its Excel-style column label. Columns 1 through 26 are `A` through `Z`; column 27 is `AA`, and the sequence continues through `ZZ` at column 702. Implement `column_label(n: int) -> string` and return the label as an uppercase string. ### Constraints & Assumptions - `n` is an integer in the inclusive range 1 through 702. - This is a column label only; do not append a row number. - The numbering is one-based. There is no zero digit and no label for column zero. - The input is valid; error handling for out-of-range values is outside this callable's contract. ### Examples - `column_label(26)` returns `"Z"`. - `column_label(27)` returns `"AA"`. ```hint Account for the missing zero digit Before taking a remainder by 26, align the current one-based position with the zero-based offsets used to select letters from A through Z. ```