Definition: Scope of the direct route

The construction examined here uses the original common ambient space $W$ and the selected conormal incidences. Before a symbol is assigned, it requires:

1. a clean matching fiber product;

2. a constant-rank reduction to a stated cotangent relation;

3. identification of genuine integration fibers and their dimension;

4. the Lagrangian or paired-Lagrangian geometry required by the proposed calculus;

5. admissible internal compositions for $K_5,K_8,K_9$ and the complete grouped amplitudes.

No new base constraints, resolved ambient space, or additional amplitude-cancellation theorem is silently supplied.