correction on width calculation

[instantuzer]

it was not perfect after all. after fresh install noticed defaults were different from altered files. corrected

[sweep-ai-deprecated[bot]]

Hey @instantuzer, here is an example of how you can ask me to improve this pull request:

@sweep Add unit tests for the `drawbar` function that verify the width calculations are correct with different monitor widths and window counts. Specifically, test that the total_width calculation (w + 12) produces the expected results for various window configurations.

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