The root cause of ALL the MLIR crashes: _create_tiled_mma and
_setup_attributes call cute.make_tiled_mma, sm100_utils.make_smem_layout_a,
etc. These are MLIR operations that REQUIRE an active MLIR context.
Previously they ran in run() OUTSIDE @cute.jit, so there was no MLIR
context — causing 'Expected an MLIR object (got None)' in _pack_shape.
Now ALL CuTe DSL calls happen INSIDE the @cute.jit function, matching
fused_swiglu's pattern where __call__ is called from JIT context.
Grid computation uses plain Python math (no MLIR needed).
biondizzle
b536f99192