lashman 0a7a6ee95c Implement watermark rotation for text and image watermarks
- Add rotate_watermark_image() using imageproc rotate_about_center
  for 45/-45 degree rotations and image::rotate90 for 90 degrees
- Add render_text_to_image() helper that renders text to a
  transparent buffer for rotation before compositing
- Apply rotation to single text, tiled text, single image, and
  tiled image watermark modes
- Fix tiled image watermark to use actual overlay dimensions
  (which change after rotation) instead of pre-rotation values
2026-03-06 18:14:53 +02:00
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11 MiB
2026-03-08 14:55:30 +02:00
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