3.4.3

Changed

• Excluded Image Filenames block featured-image auto-assign only. Those files can still be inserted next to headings.
• The exclusion list keeps the filename plus extension (types-of-sparrows.jpg) instead of a bare slug.
• Process articles and Insert all skip an image that is already in the same article, and pick the next match instead of inserting it twice.
• Excluded Image Filenames is an add/remove list with a fixed-height scroller, not a growing textarea.