feat(sacd): support raw and DST-compressed ISO playback

Parse resilient SACD images, decode DST, scan ISO releases into the local library, and keep explicit opens ephemeral.

Ship decoder notices across distribution formats and align DSD album filtering and version selection.

cx

.github/workflows/release-snap.yml

@@ -154,6 +154,9 @@ jobs:
           cp -a AppDir/usr/bin AppDir/usr/lib AppDir/usr/plugins AppDir/usr/qml snap-payload/
           cp packaging/snap/snap/gui/qbz.desktop snap-payload/qbz.desktop
           cp packaging/snap/snap/gui/qbz.png     snap-payload/qbz.png
+          cp LICENSE snap-payload/LICENSE
+          cp -r licenses snap-payload/licenses
+          test -f snap-payload/licenses/Apache-2.0-dst-decoder.txt
           mkdir -p snap
           cp packaging/snap-qt/snapcraft.yaml snap/snapcraft.yaml
           sed -i "s/^version:.*/version: '${VER}'/" snap/snapcraft.yaml
@@ -207,6 +210,9 @@ jobs:
           cp -a AppDir/usr/bin AppDir/usr/lib AppDir/usr/plugins AppDir/usr/qml snap-payload/
           cp packaging/snap/snap/gui/qbz.desktop snap-payload/qbz.desktop
           cp packaging/snap/snap/gui/qbz.png     snap-payload/qbz.png
+          cp LICENSE snap-payload/LICENSE
+          cp -r licenses snap-payload/licenses
+          test -f snap-payload/licenses/Apache-2.0-dst-decoder.txt
           mkdir -p snap
           cp packaging/snap-qt/snapcraft-arm64.yaml snap/snapcraft.yaml
           sed -i "s/^version:.*/version: '${VER}'/" snap/snapcraft.yaml