mksprite: add bleedfix option to mitigate halos for transparent sprites WIP#799

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phoboslab wants to merge 8 commits intoDragonMinded:previewfrom

phoboslab:mksprite_bleedfix

Commits on Jan 27, 2026

mksprite: add bleedfix option to mitigate halos for transparent sprites
phoboslab
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mksprite: bleedfix check straight neighbors first, then diagonals
phoboslab
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mksprite: bleedfix only do a single iteration
phoboslab
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mksprite: bleedfix fix top and leftmost pixels being ignored
phoboslab
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mksprite: bleedfix make use of free colors in palette
phoboslab
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mksprite: cleanup, refactoring; combine rgba/grey_alpha versions into a single function with bytes_per_pixel argument
phoboslab
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mksprite: bleedfix keep track of actually used colors, don't quantize palette if we don't have to
phoboslab
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mksprite: bleedfix address VLA initialization
phoboslab
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