Keep Breeze QQC2 as an intentional dependency until Shift ships a real QQC2 or widget style. Extend the theme identity test to reject fake Shift style selectors and require the fallback to stay documented in launch paths.
Provide the first real Shift Plasma desktop theme SVGs for panel and widget frames used directly by the shell. Cover dark and light modes, including solid panel backgrounds for opaque panel states.
Extend the theme identity test so the desktop themes cannot regress to metadata-only packages.
