KWin Overview 6.6 asks for the raw delete icon name on its virtual desktop delete button. Provide delete and delete-symbolic in the Shift icon theme, and point nearby KDE delete aliases at the existing close glyph so the button renders as an X instead of a fallback icon.
Guard the aliases in the icon theme coverage check.
Declare FollowsColorScheme=true for the Shift icon theme so KDE apps recolor symbolic Places glyphs against dark and light surfaces. Document the requirement and guard it in the icon theme coverage test.
Kirigami.Icon { isMask: true } flattens an SVG to its alpha, so when a quick-setting tile resolves to a colored preferences/scalable glyph the whole rounded background collapses into a solid square. Append -symbolic to the five icon names that collided with colored tiles and add symlink aliases where no real symbolic variant exists yet. Guard the regression with a check in tests/check-shift-icon-theme.sh.
Install org.shift.icons as the look-and-feel icon theme while keeping the Plasma style on breeze-dark. Add the icon-theme coverage guard and CTest registration so shell, System Settings, KCM, and installed Plasma icon names do not silently fall back to missing Breeze-only assets.
Document the theme rules and add scoped REUSE metadata for the Phosphor-derived SVG glyphs.
