PiUI v0.6.21

• fix(diff): unstick diff viewer stuck rendering only overscan rows (ea5a9df)
• feat(notifications): open extensions panel when clicking extension notifications (977f28d)

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Portable: Windows (.zip), Linux (.tar.gz), macOS (.tar.gz)
Desktop: Windows (.exe), macOS (.dmg), Linux (.deb, .AppImage)
Mobile: Android (.apk) — arm64, armeabi-v7a