Prepend a boxed app icon (tasks-notification style) to each row of the
System page's Per-app usage table. Multi-instance slugs (<type>_<id>)
resolve to the base type's icon; missing icons fall back to default.svg.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
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