AppStream compose in the Flatpak build failed with "Unrecognized image file format" for the new scalable icon, so v0.1.5 was never published. Image loaders recognise an SVG by finding "<svg" within the first 256 bytes, and the icon's descriptive header comment pushed the tag past that. The comment now lives inside the element; the icon renders pixel-identically. icons/CMakeLists.txt now fails configuration if the tag drifts past 256 bytes again. Verified with the KDE 6.10 runtime's appstreamcli-compose, which now succeeds and emits all catalog icons. Co-Authored-By: Claude Opus 5 (1M context) <[email protected]> Claude-Session: https://claude.ai/code/session_01BxDf7HqD1xPnsZP8wt3NTk