Four-block order readout

In order-readout, the kernel is not a single generated ray. It is a typed four-block stack

O_α ≺ O_π ≺ O_γ ≺ O_η ≺ ω .

This shape is an order-readout analogy, not imported ordinal theory. The classical ordinal ω would correspond only to the first post-α boundary position; the τ-symbol ω is the global absorber/top element after all four typed rays. The stack is therefore analogous to a finite ω-block shape, but each block carries a different fold regime. This is the E0 precursor of the later 4+1 sector template.