The flow solver starts at flowFinest_, but its images, uniform buffers and descriptor sets were allocated for every pyramid level. Keep the seven-level indices and allocate flow resources only where the solver reads and writes them.
The default preset avoids three unused RGBA16F images, saving 38,707,200 bytes of pixel payload at 2560x1440 without changing the shaders or recorded GPU work. Add native allocation/dispatch regressions and document the resource budgets.
