Noncommutative resolutions and intersection cohomology for quotient singularities

For a large class of good moduli spaces $X$ of symmetric stacks $\mathcal{X}$, we define noncommutative motives ${\mathbb{D}}^{\text{nc}}(X)$ which can be regarded as categorifications of the intersection cohomology of $X$. These motives are summands of noncommutative resolutions of singularities $\mathbb{D}(X)\subset D^b(\mathcal{X})$ of $X$. The category $\mathbb{D}(X)$ is a global analogue of the noncommutative resolutions of singularities of $V\mathrm{/}\mathrm{/}G$ for $V$ a symmetric representation of a reductive group $G$ constructed by \v{S}penko-Van den Bergh.